cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Permanent matching of coupled optical bottle resonators with better than 0.16 GHz precision
Creators: name: Toropov, N. A.
name: Sumetsky, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The fabrication precision is one of the most critical challenges on the way to the creation of practical photonic circuits composed of coupled high Q-factor microresonators. While very accurate transient tuning of microresonators based on local heating has been reported, the record precision of permanent resonance positioning achieved by post-processing is still within 1-5 GHz. Here we demonstrate two coupled bottle microresonators fabricated at the fiber surface which resonances are matched with a better than 0.16 GHz precision. This corresponds to a better than 0.17 angstrom precision in the effective fiber radius variation. The achieved fabrication precision is only limited by the resolution of our optical spectrum analyzer and can be potentially improved by an order of magnitude.
description: 4 pages
Two New Long-Period Giant Planets from the McDonald Observatory Planet Search and Two Stars with Long-Period Radial Velocity Signals Related to Stellar Activity Cycles
Creators: name: Endl, Michael
name: Brugamyer, Erik J.
name: Cochran, William D.
name: MacQueen, Phillip J.
name: Robertson, Paul
name: Meschiari, Stefano
name: Ramirez, Ivan
name: Shetrone, Matthew
name: Gullikson, Kevin
name: Johnson, Marshall C.
name: Wittenmyer, Robert
name: Horner, Jonathan
name: Ciardi, David R.
name: Horch, Elliott
name: Simon, Attila E.
name: Howell, Steve B.
name: Everett, Mark
name: Caldwell, Caroline
name: Castanheira, Barbara G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report the detection of two new long-period giant planets orbiting the stars HD 95872 and HD 162004 (psi1 Draconis B) by the McDonald Observatory planet search. The planet HD 95872b has a minimum mass of 4.6 M_Jup and an orbital semi-major axis of 5.2 AU. The giant planet psi1 Dra Bb has a minimum mass of 1.5 M_Jup and an orbital semi-major axis of 4.4 AU. Both of these planets qualify as Jupiter analogs. These results are based on over one and a half decades of precise radial velocity measurements collected by our program using the McDonald Observatory Tull Coude spectrograph at the 2.7 m Harlan J. Smith telescope. In the case of psi1 Draconis B we also detect a long-term non-linear trend in our data that indicates the presence of an additional giant planet, similar to the Jupiter-Saturn pair. The primary of the binary star system, psi1 Dra A, exhibits a very large amplitude radial velocity variation due to another stellar companion. We detect this additional member using speckle imaging. We also report two cases - HD 10086 and HD 102870 (beta Virginis) - of significant radial velocity variation consistent with the presence of a planet, but that are probably caused by stellar activity, rather than reflexive Keplerian motion. These two cases stress the importance of monitoring the magnetic activity level of a target star, as long-term activity cycles can mimic the presence of a Jupiter-analog planet.
description: 31 pages, 27 figures, accepted for publication in the Astrophysical Journal
Context-Aware Adaptive Framework for e-Health Monitoring
Creators: name: Mshali, Haider
name: Lemlouma, Tayeb
name: Magoni, Damien
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computers and Society (cs.CY)
subject: Artificial Intelligence (cs.AI)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: For improving e-health services, we propose a context-aware framework to monitor the activities of daily living of dependent persons. We define a strategy for generating long-term realistic scenarios and a framework containing an adaptive monitoring algorithm based on three approaches for optimizing resource usage. The used approaches provide a deep knowledge about the person's context by considering: the person's profile, the activities and the relationships between activities. We evaluate the performances of our framework and show its adaptability and significant reduction in network, energy and processing usage over a traditional monitoring implementation.
description: 8 pages, Proceedings of the 11th IEEE Global Communications Conference (merged with the IEEE DSDIS2015), Sydney, Australi,11-13 December, 2015
Analysis of Plasmonic Nanoparticle Fabrication Techniques for Efficient Integration in Photovoltaic Devices
Creators: name: Connolly, J.P.
name: David, C.
name: Rodriguez, P.
name: Griol, A.
name: Welti, P.
name: Bellières, L.
name: Ayucar, J.
name: Hurtado, J.
name: López, R.
name: Sánchez, G.
name: García De Abajo, F.J.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
New Materials, Cells and Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 773-776
description: Silicon solar cells suffer from the relatively low absorption. Of a number of techniques to improve
this light-matter interaction, metallic nanoparticles offer two solutions, first by scattering and by secondly by
directly increasing absorption due to localised or extended surface plasmons near the plasmonic layer. The
mechanism of choice depends on the geometry and design of the solar cell considered, and the implementation is a
function of the distribution of nanoparticle geometry and separation. We investigate three methods of fabricating
metallic nanoparticles from tens to hundreds of nanometres in size. The methods are ebeam lithography,
nanosphere lithography and self-aggregated nanoparticles. Details of nanoparticle fabrication together with
measurements of resulting nanoparticle geometry and density are given. The resulting plasmonic layers are
characterised optically and conclusions drawn regarding their suitability for silicon solar cells and compatibility
with standard manufacturing processes.
Optical and Structural Analysis of N-Type Polysilicon Films Formed by Aluminium Induced Crystallization
Creators: name: Tuzun, Ö.
name: Slaoui, A.
name: Gordon, I.
name: Jomard, F.
name: Ballutaud, D.
name: Maurice, C.
name: Beaucarne, G.
name: Poortmans, J.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Thin Film Crystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2254-2257
description: Large grains p-type silicon can be formed by aluminium induced crystallization (AIC) of amorphous silicon, thanks to the Al doping. On the other hand, n-type based thin polysilicon films on foreign substrates are preferred for the fabrication of solar cells because of the better electronic properties compared to p-type silicon. Recently, we have shown that p-type AIC polysilicon films can be turned to n-type by overdoping using phosphorus diffusion. In this work, we investigate the structural properties of the active epi-layer formed on the n-type AIC seed layers. The sheet resistance measurements confirmed the doping efficiency and the n-type character of the AIC layer. Value as low as 25Ω/sq was measured. The epi-layer was formed by deposition of an intrinsic amorphous Si film on the n-type seed layer followed by annealing at different temperatures, in the range 700-1100°C, for recrystallization. The surface morphology was analyzed by electron backscatter diffraction (EBSD) system. The stress and crystallinity of the silicon were investigated by micro-Raman spectroscopy. The shift of the Raman peak position for the annealed samples indicates compressive stress, from 422.9MPa to 882.8MPa with increasing temperatures. Furthermore, a crystallinity of ~93% is achieved at 1100°C for 90min in classical furnace annealing. Finally, the phosphorus doping distribution in the epi-layer was analyzed by secondary ion mass spectroscopy (SIMS). It shows a graded doping from the n-type converted AIC layer towards the surface.
Development of SiOx and SiOx/ SiO2 Superlattice for Application in Solar Cells
Creators: name: Ray, S.
name: Mukhopadhyay, S.
name: Kurokawa, Y.
name: Konagai, M.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
New Materials, Cells and Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 591-594
description: SiOx/ SiO2 superlattices have been developed by RFPECVD technique by varying the deposition
conditions and annealing temperatures. Presence of nanocrystals has been confirmed from Raman study, high resolution
transmission electron micrographs and X-ray diffraction studies. Size of the nanocrystals as observed from XRD varies
from 8 nm to 12 nm for the superlattices deposited under different conditions and crystallized at different temperatures.
Raman studies show that the crystalline volume fraction varies from 17 % to 62.4 % for the SL’s formed under different
conditions. Photoluminesence study show two peaks, one at ~ 465 nm in blue region and the other at 525 nm in the green
region. These two peak intensities increase with decreasing SiOx layer thickness. Peak intensities are more for the
superlattice annealed at 800oC than 900oC. Incorporation of nitrogen in the network alters the structure as it replaces
electronegative oxygen atoms in the Si-(Si4-n-On) tetrahedral structures.
Examination of Crystaline Si Thin Film Solar Cells Made From Epitaxial Lateral Overgrown Layers
Creators: name: Cieslak, K.
name: Fave, A.
name: Gulkowski, S.
name: Olchowik, J.M.
name: Józwik, I.
name: Lemiti, M.
name: Kutsukake, K.
name: Pan, W.
name: Usami, N.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Thin Film Crystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2258-2260
description: Epitaxial Lateral Overgrowth (ELO) is a method which enables to grow epitaxial layers using liquid phase epitaxy (LPE) on a growth substrate partly covered by a dielectric film. This method is used to obtain layers of better quality than the original growth substrate, due to the dielectric film which prevents defects propagation into the ELO layer. This feature makes it a promising technology to obtain good silicon thin film for photovoltaic applications, using low quality Si substrate. Solar cells were fabricated using ELO structures prepared with different growth conditions allowing coalescence between the different seeding windows. I-V, external quantum efficiency and Light Beam Induced Current characterizations were performed. Analysis of these results shows that there is a strong recombination effect at the interface between ELO and the dielectric film. We demonstrate that it is due to a small gap existing between them caused by the growth mechanism. We discuss on the possibility to overcome this problem.
Temperature Dependence of Amorphous Silicon Oxide Thin-Film Solar Cells Near Phase Boundary
Creators: name: Sriprapha, K.
name: Inthisang, S.
name: Miyajima, S.
name: Yamada, A.
name: Sichanugrist, P.
name: Konagai, M.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Amorphous and Microcrystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2278-2281
description: The temperature dependence of wide bandgap amorphous silicon oxide-based thin film single-junction solar
cells on the phase of the intrinsic absorber was investigated in order to find the optimal absorber for top cell of multi-junction
solar cells which is an attractive for the use in high temperature environment. Photo J-V characteristics were measured using
a solar simulator at an ambient temperature in the range of 25-75oC. It was found that the protocrystalline silicon oxide solar
cells provided the lowest temperature coefficient for the efficiency, while solar cells fabricated at the mixed-phase of
amorphous+microcrystalline silicon oxide were low initial efficiency. Experimental results indicated that protocrystalline
silicon oxide is a promising material for using as an intrinsic absorber of Si-based thin film multi-junction solar cells which
operating in high temperature regions.
p-Type Microcrystalline Sige Window Layer Prepared by VHF-PECVD
Creators: name: Shang, Z.
name: Zhang, J.
name: Zhang, L.
name: Zhang, X.
name: Hu, Z.
name: Hou, G.F.
name: Geng, X.
name: Zhao, Y.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Amorphous and Microcrystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2282-2284
description: In this paper, the influence of doping ratio and hydrogen dilution on the structural and electrical
characteristics of p-μc-SiGe films was investigated in detail. The results shows that, with the increase of doping ratio,
the materials transformed from microcrystalline to amorphous, and the dark conductivity changes little first and then
decreases steeply. With the increase of hydrogen dilution, the dark conductivity increases first, then decreases. On
the contrary, the active energy decreases first, then increases. The growth kinetics of p-μc-SiGe thin films was
explored with optical emission spectra (OES) technique. The results shows that, the ration of SiH*/H* decreased
with the increase of doping ratio and increased as the hydrogen dilution decreased. So the crystalline volume fraction
of thin films decreased. By optimizing the deposition parameters, p-μc-Si1-xGex thin film with high conductivity, low
activation energy (0.67S/cm Eg0.042ev) and high crystalline volume fraction of 51% at the thickness of
32nm was achieved.
Newtech – 3 Different Thin Film PV Plants of 1kWp under Direct Long-Term Comparison (2002 – 2009)
Creators: name: Häberlin, H.
name: Schärf, P.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV System Engineering and Standards, Socio-economic Aspects, and Sustainability

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4756-4762
description: Besides tests of PV inverters started in 1989, since 1992 the PV laboratory of BFH-TI in Burgdorf has also
carried out several analytical monitoring projects without any interruptions with a continuously increasing number of
plants and inverters. At present 43 grid-connected PV plants with 72 inverters are monitored. Most of these plants are
in the town of Burgdorf, but since 1993 also two high alpine plants at 3454 m and 2670 m are included in the project.
The purpose of these long-term monitoring projects is to register all relevant influences on energy yield, degradation
mechanisms, reliability, and life expectancy of grid-connected PV plants, which can not be detected during relatively
short initial monitoring campaigns of only 1- 2 years often performed after the erection of new PV plants.
Since December 2001 also a PV pilot plant with three different thin-film technologies (CuInSe2/CIS, a-Si tandem
cells, a-Si triple cells) has been included in the project. In this paper, the operating experience of the first 8 years since
the very first day of operation is presented. Energy production of these three thin-film plants can be compared directly
with that of many crystalline plants in Burgdorf and in other parts of Switzerland monitored in the same project.
Influence of the weakly interacting light U boson on the properties of massive PNS
Creators: name: Hong, Bin
name: Jia, Huan-Yu
name: Zhou, Xia
name: Mu, Xue-Ling
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Considering the octet baryons in relativistic mean field theory and selecting entropy per baryon S=1, we calculate and discuss the influence of U boson on the equation of state, mass-radius, moment of inertia and gravitational redshift of massive protoneutron star (PNS). The effective coupling constant $g_{U}$ of U bosons and nucleons is selected from 0GeV$^{-2}$ to 70GeV$^{-2}$. The results point that U bosons will stiffen the equation of state (EOS). The influence of U bosons on the pressure is more obvious at low density than high density, while, the influence of U bosons on the energy density is more obvious at high density than low density. The U bosons play a significant role in increasing the maximum mass and radius of PNS. When the value of $g_{U}$ changes from 0GeV$^{-2}$ to 70GeV$^{-2}$, the maximum mass of massive PNS increases from 2.11 $M_{\odot}$ to 2.58 $M_{\odot}$, and the radius of PNS corresponding PSR J0348+0432 increases from 13.71 km to 24.35 km. The U bosons will increase the moment of inertia and decrease the gravitational redshift of PNS. For PNS of the massive PSR J0348+0432, the radius and moment of inertia vary directly with $g_{U}$, the gravitational redshift vary inversely with $g_{U}$ approximately.
description: 7 pages,7 figures,1 table
Optical Model to Describe Absorption Pattern for Low Concentration PV Modules: Preliminary Results
Creators: name: Soler-Bientz, R.
name: Gómez-Castro, F.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV System Engineering and Standards, Socio-economic Aspects, and Sustainability

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4763-4769
description: An optical model is proposed for describing the optical behaviour of a PV module under the
illumination conditions prevailing in the Yucatan Peninsula – Mexico. A ray tracing analysis is carried out in
order to determine the distribution of the available radiation on the collector and also the physical behaviour of
the light which travels within the structure of the PV module. In order to analyse the effects of non-uniform
illumination on the optical absorption patterns of a PV module, a reflecting surface was added to the
configuration, which casts either a shadow or a concentration pattern on the module surface. Consequently, the
proposed model is an attractive tool for the analysis and further optimization of low concentration systems.
CZ Crystal Growth Optimization for PV Industry
Creators: name: Budagyan, B.
name: Fiegl, G.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Manufacturing Issues

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1396-1399
description: In this work the industrial CZ puller with 60 kg charge capacity for growing 6” and 8” monocrystalline
silicon of p- and n-type conductivity was optimized for growing solar grade silicon at low manufacturing cost. The
hot zone design was modified to provide high productivity and low energy consumption during the process. By
implementing an advanced gas dynamic we improved a thermal profile at the crystal –melt interface and significantly
extended the usage of graphite parts. As a result of these innovations the energy consumption for manufacturing solar
grade silicon ingots is decreased by 25% and the process time by 20%. It is concluded that optimization of CZ puller
for specific PV industry requirements will significantly improve the competiveness of this traditional semiconductor
technology in the modern PV market
Experimental Evidence for Impurity Photovoltaic Effect in GaAs/AlGaAs Based Graded Bandgap Multi-Layer Solar Cells
Creators: name: Dharmadasa, I.M.
name: Elsherif, O.
name: Tolan, G.J.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
New Materials, Cells and Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 583-586
description: A graded bandgap multi-layer solar cell device structure was designed to absorb UV, visible and IR
radiation, and to incorporate impact ionisation and impurity photovoltaic effects within one device. The design was
experimentally tested with a well researched material system, MOVPE grown GaAs/AlGaAs. Open circuit voltages of
~1175 mV with highest possible FF values (0.83-0.87) have been observed [1,3]. These parameters were
independently verified by measuring in five different laboratories in Europe and United States including NREL.
While the work is continuing to increase short circuit current density values, these devices were tested to explore the
experimental evidence of impurity PV effect, as expected from this design. Responsivity measurements and PV
activity in dark conditions have been carried out to investigate impurity PV effect in these devices. Responsivity
measurements indicate current collection in the infra-red region confirming the contribution from IR photons. The IV
measurements in dark conditions produce open circuit voltages exceeding 750 mV confirming the contribution
from surrounding heat radiation. The new features of graded bandgap devices enable impurity PV effect to dominate
and create useful charge carriers, suppressing detrimental recombination process. These experimental results will be
presented in this paper.
Precise Measurement of Solar Cell Performance in Production
Creators: name: Warta, W.
name: Hohl-Ebinger, J.
name: Ohm, A.
name: Kordelos, K.
name: Winter, S.
name: Adelhelm, R.
name: Berger, D.
name: Hartmann, H.-P.
name: Neuhaus, D.-H.
name: Wald, M.
name: Kieliba, T.
name: Albert, H.
name: Hund, B.
name: Isenberg, J.
name: Nagel, H.
name: Fölsch, J.
name: Grabitz, P.
name: Lattwein, W.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Manufacturing Issues

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1382-1386
description: The economical relevance of a shift of several percent in the produced output of a PV
factory is obvious. Basic for the assessment of cell performance in the cell sorter measurements at the
end of a production line are calibrated references. We report on the leading-edge achievements of a cooperation
project between most relevant German cell and test equipment manufacturers with Fraunhofer
ISE CalLab PV Cells and the PTB in this research field. A significant reduction in the uncertainty of the
calibration of large area industrial cells without cell inter-connectors has been achieved. Uncertainty in
the short circuit current was reduced from previously 2.5 % to now 1.8 %. A series of measures to
assure long term comparability of calibration results was established. Criteria for the selection of
reference cells were agreed upon. Optical features of industrial cell testers were assessed on the basis of
a complete uncertainty calculation for the attribution to a simulator class. Some progress steps in the
complex metrology of a light sensitive device are exemplified in the paper.
Validation of Estimated Energy Losses of PV-Systems Due to Seasonal Shading
Creators: name: O'Nagy, O.
name: Koster, D.
name: Minette, F.
name: Bertrand, A.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV System Engineering and Standards, Socio-economic Aspects, and Sustainability

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4740-4743
description: Long-term measurements of a 50-kWp PV-system are used to investigate and to quantify different
shading effects, which have an impact on the normal operation of the system during the seasons. The measurements
are compared to data measured on a shading free reference test field and simulation results obtained from an image
processing method. The results are used to validate the simulation results. Furthermore it will be shown that the
image processing method is suitable for a shading analysis capable of determining the best location in partly shaded
areas and the way of wiring the strings.
Manual do desenvolvedor O.N.D.E
Creators: name: Vianna, Filipi
name: Leal, Gustavo Henrique
name: Tavares, Lucas Augusto
Publisher: name: Zenodo
Year: 2023
Subjects: prototyping framework Web IS

description: O.N.D.E. O.N.D.E. - Onde was Not Developed for aEsthetics Inspired by the exflickr/flamework, Onde is a quick and dirty PHP application prototyping fLame Work. Automatic form CRUD (forms.php) In its current version, it serves as the basis for a simple PHP application, providing functions to generate HTML tables from PostgreSQL queries and also a module to automatically generate CRUD forms for PostgreSQL tables. The CRUD form generation tool scans the database data dictionary to identify relations, making selection boxes (or radio lists, depending on the size of the list) for the 1:N relations and check boxes lists for the N:N relations. The tool handles the submitted information through an “insert” or a “save” button, thus automatically generating an insert or an update query statement. There is no object relational abstraction, the queries are generated directly in the PHP functions. Automatic Menus from table menu (databasemenu.php) The framework provides a side menu (usually on the left side of the window), which is generated from table menu's data. The menu items could link to a php script for a forms.php's form or a calendar. User access control The user's access control is made through limiting the access of user's groups. Each user is assigned to a group (or groups) and the forms and menus are cleared for the groups. It is possible to clear some forms to be accessible without authentication.
Defect Analysis in Different Photovoltaic Modules Using Electroluminescence (EL) and Infrared (IR)-Thermography
Creators: name: Ebner, R.
name: Zamini, S.
name: Újvári, G.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
Fundamental Studies

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 333-336
description: The large, quickly evolving PV production market requires fast and reliable characterisation tools
for comparing different technologies. Faulty modules have to be sorted out accurately since they could lead to
high power losses or cause safety problems after installation. The aim of this work was the comparison of
different quality assurance methods for different module technologies (e.g. crystalline and thin film
technologies). For a complete quality control of PV modules a combination of fast and non-destructive methods
was investigated. It turned out that for a fast detection of the most common defects in a PV module with high
resolution, a combination of EL and IR measurements is advisable.
Optimization of a PV-Thermal Hybrid System for a Student Hostel in Singapore – A Theoretical Approach
Creators: name: Tay, A.A.O.
name: Dubey, S.
name: Yixian, L.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV System Engineering and Standards, Socio-economic Aspects, and Sustainability

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4777-4785
description: If PV modules were used solely to produce electricity in regions where an electricity grid is available,
it would probably not be cost-competitive at the moment. Current commercial PV conversion efficiency is about 6-
18% depending on the materials used for the module construction. Thus a large fraction of the solar radiation
incident on the module is converted into heat. If this heat can be harvested as well, the overall energy efficiency of
such an integrated Photovoltaic Thermal (PVT) hybrid system will be greatly improved. At the same time, pumping
water through the PV modules will cool the solar cells and improve their electricity production efficiency. This paper
describes the design and numerical simulation of a PVT system for producing electricity and hot water in a student
hostel in Singapore. The nominal electrical power output is 10 kWp. Thermal models were developed based on basic
energy balance equations and average climatic conditions for Singapore over a typical year were used. A survey of
the hot water usage pattern over a typical week was carried out and used in the simulation. The optimum mass flow
rate in the collectors was found to be 0.05 kg/s and the optimum storage tank capacity 2500 kg. The average thermal
and electrical efficiency of the system were 42.5% and 13%, respectively.
IT Infrastructure in PV Factory Lifecycle
Creators: name: Rauschecker, U.
name: Böttinger, F.
name: Michen, M.
name: Maier, F.
name: Fischmann, C.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Manufacturing Issues

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1387-1389
description: The photovoltaic industry has grown rapidly over the past years. Due to the decreasing government
subsidies in several countries the PV industry has to reduce costs and to optimize their value chain. One promising
approach for cost reduction is to pass through the different lifecycles of a PV-factory such as planning and ramp-up
more efficiently. For this reason, IT infrastructure is required to be – according to PV-factories which get larger and
larger – more sophisticated. Such an infrastructure may include tools and functionalities which support the whole
factory lifecycle from equipment evaluation and choice up to ramp-up, operation and upgrades. In addition to this,
current manufactures face challenges like the integration of new equipment into existing production lines, flexibility
concerning material flow requirements, integration of external software systems and adoption to changing production
capabilities. This paper gives an overview of IT applications which can support the deployment of a PV mass
production line during all lifecycle phases and shows how such an IT infrastructure could be realized.
Improved Concept for Industrial Screen Printing Line
Creators: name: Zapf-Gottwick, R.
name: Cichoszewski, J.
name: Fechtig, O.
name: Mühlbauer, M.
name: Metzner, K.
name: Schlenker, T.
name: Manz, D.
name: Werner, J.H.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Manufacturing Issues

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1390-1392
description: The present contribution reports on a novel concept for an industrial screen printing line which
implements three improved components: i) a high quality screen printer which prints two solar cells at the same time,
thus increasing printing speed by 100 %, ii) a drying furnace with a paternoster principle, thus using much smaller
foot print than conventional furnaces, iii) a firing furnace with a new transport principle, using quartz glass rolls
instead of a metal conveyor belt, thus decreasing energy consumption and metal contamination. We designed and
investigated this prototype of industrial screen printing line. Processing the same type of cells in our line gives
similar, improved results when compared to a conventional industrial line. Latest processed and produced solar cells
from ipe show in house measured efficiencies of  = 17.2 % on mono crystalline solar cells and  = 16.4 % on multi
crystalline cells each with an industrial size of 156 x 156 mm2.
Comparison between Two 1 KW PV Grid-Connected Systems (one with a New Tracker and one Fixed)
Creators: name: Salas, V.
name: Débora, P.J.
name: Olías Ruiz, E.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
Balance of System Components

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4411-4412
description: The aim of this article is to present the design and implementation of a new tracker. A comparison will
also be conducted between a new PV tracking grid-connected system and a fixed PV grid-connected system, with the
same power. Those systems were installed at the Universidad Carlos III de Madrid, Leganes (Madrid), in Spain. To
do this, it was necessary to obtain and compare the actual power output of very inverter. The same PV generator and
grid-connected inverters were installed in every system type. The only difference between installations was the type
of tracking system used.
Simulation of Deep and Shallow Traps in Typical pn Junction Solar Cell Using Impedance Spectroscopy
Creators: name: Oylumluoglu, G.
name: Sertap Kavasoglu, A.
name: Kavasoglu, N.
name: Oktik, S.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
Fundamental Studies

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 558-561
description: Impedance Spectroscopy measures the dielectric properties of a device as a function of frequency. Impedance
spectroscopy is known to be a very convenient experimental technique for analyzing majority carrier traps. Using
temperature depended impedance spectroscopy in a broad frequency range (5 Hz- 13 MHz), we have found that the AC
behavior of typical pn junction diode exhibits several features. The frequency-dependent impedance data of typical pn
junction has been discussed on the basis of a discrete deep or shallow trap model. The analytic results show that frequency
depended -dC/dw and tan curves are peaks function. The peak position is related to the deep or shallow trap states. The
dielectric relaxation time and trap energy corresponding to peak frequency can be determined by -dC/dw vs w or tan  vs w
curve. This investigation shows that the existence of traps can be deduced from suitable complex impedance measurement
and this information can be used to calculate the dielectric relaxation time and energetic position of the trap. A theoretical
analysis and computer simulation are presented in order to illustrate the nature of the trap and the technique by which
accurate dielectric relaxation time and energy position of the trap state can be obtained.
Electrical Model to Represent the Energy Produced by PV Modules under Inhomogeneous Radiation: Preliminary Results
Creators: name: Soler-Bientz, R.
name: Gómez-Castro, F.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV System Engineering and Standards, Socio-economic Aspects, and Sustainability

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4770-4776
description: This paper presents a model to describe the performance of a Silicon PV module under
inhomogeneous radiation conditions produced by low concentration systems in real field operating conditions.
The model developed is based on the single diode equation and the electrical parameters provided by
manufacturer. The effects of the non-uniform illumination profiles and the corresponding inhomogeneous
thermal patterns, generated on the PV module, are considered in the mathematical model for the Short Circuit
Current and the Open Circuit Voltage. These inhomogeneous patterns are usually found not just in PV
concentrators but also in PV systems integrated in urban environment such as facades. In this way, the model
developed in this research is a useful tool in the design, analysis and optimization of conventional PV generators
under any operating condition related with inhomogeneous illumination patterns.
A New Benchmark Required for Sphelar® Technology
Creators: name: Taira, K.
name: Nakata, J.
name: Inagawa, I.
name: Ohtani, S.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
New Materials, Cells and Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 562-566
description: The efficiency and peak power obtained under standard test conditions are still frequently used to rate
traditional flat PV modules which are only sensitive to light falling on the front side of the module. However, this paper
clearly shows that such standards do not work to estimate cumulated energy yield, when applied to Sphelar® (spherical
solar) modules which capture sunlight 3 dimensionally due to its unique construction made up of spheres. Further, we
present some clues as to general methods and models, which take the spherical nature of Sphelar® modules into account.
Nanocrystals Doped Polymer Material for Luminescent Solar Concentrator for Absorption of Visible and NIR Part of Solar Spectrum and Emission within Si Absorption Range
Creators: name: Jeremiasz, O.
name: Socha, M.
name: Nikiel, W.
name: Lipinska, L.
name: Sarnecki, J.
name: Nakielska, M.
name: Gawlik, G.
name: Teodorczyk, M.
name: Wnuk, A.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
New Materials, Cells and Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 587-590
description: Aim of this work is to develop Luminescent Solar Concentrator (LSC) matrix material suitable to absorb NIR and
visible part of solar spectrum and emit light within Si absorption range. The synthesis of transparent material by the
incorporation of clusters of Nd:Yb:YAG; Nd:Yb:GGG and Nd:Yb:Y2O3 nanocrystals into polymethyl mathacrylate
(PMMA) polymer matrix and their subsequent characterization are presented. The redispersion of nanocrystals was
done by ultrasonification directly in methyl methacrylate monomer (MMA). The influence of surface active agents
has been analyzed in selected samples. Agglomerate sizes after redispersion process were in the range of 10 nm to
100nm. The good optical quality samples has been obtained by using UV polymerization process. Strong
fluorescence signal from Yb3+ ions with main peak centered at 1026 nm was observed by direct excitation of Yb3+
ions at 970 nm as well as by excitation of Nd3+ ions at 808 nm. Spectral characteristics are presented and discussed.
The results indicate that investigated polymer materials with rare earth contained oxide nanocrystals can be used for
NIR conversion for silicon PV application.
An ALMA view of the interstellar medium of the z=4.77 lensed starburst SPT-S J213242-5802.9
Creators: name: Béthermin, M.
name: De Breuck, C.
name: Gullberg, B.
name: Aravena, M.
name: Bothwell, M. S.
name: Chapman, S. C.
name: Gonzalez, A. H.
name: Greve, T. R.
name: Litke, K.
name: Ma, J.
name: Malkan, M.
name: Marrone, D. P.
name: Murphy, E. J.
name: Spilker, J. S.
name: Stark, A. A.
name: Strandet, M.
name: Vieira, J. D.
name: Weiß, A.
name: Welikala, N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present ALMA detections of the [NII] 205$μ$m and CO(12-11) emission lines, and the tentative detection of [CI] $^3$P$_1$ - $^3$P$_0$ for the strongly lensed ($μ$=5.7$\pm$0.5) dusty, star-forming galaxy SPT-S J213242-5802.9 (hereafter SPT2132-58) at z=4.77. The [NII] and CO(12-11) lines are detected at 11.5 and 8.5 $σ$ level, respectively, by our band-6 observations. The [CI] line is detected at 3.2 $σ$ after a re-analysis of existing band-3 data. The [CI] luminosity implies a gas mass of 3.8$\pm$1.2$\times$10$^{10}$ M$_\odot$, and consequently a very short depletion timescale of 34$\pm$13 Myr and a CO-luminosity-to-gas-mass conversion factor $α_{\rm CO}$ of 1.0$\pm$0.3 M$_\odot$ (K km s$^{-1}$ pc$^{2}$)$^{-1}$. SPT2132-58 is an extreme starburst with an intrinsic star formation rate of 1100$\pm$200 M$_\odot$/yr. We find a [CII]/[NII] ratio of 26$\pm$7, which is the highest reported at z$>$4. This suggests that SPT2132-58 hosts an evolved interstellar medium (0.5 Z$_\odot$
description: 5 pages, 5 figures, 1 table, Accepted by A&A (problem with numerical values in the abstract corrected in v2)
An Algebraic PT-Symmetric Quantum Theory with a Maximal Mass
Creators: name: Rodionov, V. N.
name: Kravtsova, G. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we draw attention to the fact that the studies by V. G. Kadyshevsky devoted to the creation of the which \emph{\emph{to the geometric quantum field theory with a fundamental mass}} containing non-Hermitian mass extensions. It is important that these ideas recently received a powerful development in the form of construction of the non-Hermitian algebraic approach. The central point of these theories is the construction of new scalar products in which the average values of non-Hermitian Hamiltonians are valid. Among numerous works on this subject may be to allocate as purely mathematical and containing a discussion of experimental results. In this regard, we consider as the development of algebraic relativistic pseudo-Hermitian quantum theory with a maximal mass and experimentally significant investigations are discussed
description: 7 figures in ISSN 1063-7796, Physics of Particles and Nuclei, 2016, Vol. 47, No. 2, p.135, published in Fizika Elementarnykh Chastits i Atomnogo Yadra, 2016, Vol. 47, No. 2
Broadcasting a file in a communication network
Creators: name: Goetzmann, Kai-Simon
name: Harks, Tobias
name: Klimm, Max
Publisher: name: Technische Universität Berlin
Year: 2020
Subjects: subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik
subject: broadcasting problem
subject: content distribution
subject: file sharing
subject: load balancing
subject: makespan
subject: peer-to-peer
subject: approximation algorithm

description: We study the problem of distributing a file, initially located at a server, among a set of n nodes. The file is divided into m≥1 equally sized packets. After downloading a packet, nodes can upload it to other nodes, possibly to multiple nodes in parallel. Each node, however, may receive each packet from a single source node only. The upload and download rates between nodes are constrained by node- and server-specific upload and download capacities. The objective is to minimize the makespan. This problem has been proposed and analyzed first by Mundinger et al. (J Sched 11:105–120, 2008. https://doi.org/10.1007/s10951-007-0017-9) under the assumption that uploads obey the fair sharing principle, that is, concurrent upload rates from a common source are equal at any point in time. Under this assumption, the authors devised an optimal polynomial time algorithm for the case where the upload capacity of the server and the nodes’ upload and download capacities are all equal. In this work, we drop the fair sharing assumption and derive an exact polynomial time algorithm for the case when upload and download capacities per node and among nodes are equal. We further show that the problem becomes strongly NP-hard for equal upload and download capacities per node that may differ among nodes, even for a single packet. For this case, we devise a polynomial time (1+2√2)-approximation algorithm. Finally, we devise two polynomial time algorithms with approximation guarantees of 5 and 2+⌈log2⌈n/m⌉⌉/m, respectively, for the general case of m packets.
Enhanced Light Diffusion Using Shadow Mask Based Surface Texturing Technique
Creators: name: Hsu, C.-M.
name: Chang, C.-R.
name: Lin, H.-B.
name: Wu, W.-T.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Amorphous and Microcrystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2275-2277
description: Molybdenum doped zinc oxide (MZO) films have been fabricated on glass for the applications in a-
Si/-Si based thin film solar cells. To enhance light trapping efficiency, round MZO surface textures were formed on
top of a 100nm MZO film using co-sputter deposition through a micro shadow mask. The surface textures, having
physical dimensions of 110 nm in height and 120 nm in diameter, evenly spreaded on the MZO film with a pitch of
300 m. These surface textures effectively caused ~ 4 % of light diffusion. The diffused light is believed to be able to
laterally travel in a-Si/-Si thin film absorbers, and its enhancing effect on the solar power efficiency is expected.
Development of an intelligent rubber mixing system (Rubmix) using stationary and rotary part extruder pulleys.
Creators: name: DLIMILD KFT.
Publisher: name: Zenodo
Year: 2023

description: The result of the development is a special rubber mixing device, called fantasy (Rubmix) and the mixing technology that can be performed with it. From a technical point of view, our equipment to be developed qualifies as a closed mixer. The primary advantage of this type of internal mixer is a more uniform mixture quality and higher productivity. Another advantage of our equipment is that there is no environmental load on mixtures containing dust due to the confined space. Also, with the two-screw extruder part of our Rubmix mixer, the additional powder and liquid dispensers are connected to keep the system closed. As a result of our development, the so-called kneading chamber was connected to a two-screw mixing extruder connected through the lower gate, which has unique stationary and rotating parts on the auger, as well as a change in the direction of rotation due to the servo motor drive. With our equipment, we have created a closed rubber mixing system, with which we fundamentally change and renew the mixing technology. As a result of the project, 1 tested prototype will be created.
Application of USNO-B1.0 towards selecting objects with displaced blue and red components
Creators: name: Jayson, Joel S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have conducted a feasibility study to determine the effectiveness of using USNO-B1.0 data to preferentially detect objects with displaced red and blue components. A procedure was developed to search catalogue entries for such objects, which include M dwarfs paired with white dwarfs or with earlier main-sequence stars, and galaxies with asymmetric colour distributions. Residual differences between red and blue and infrared and blue scanned emulsion images define vectors, which, when appropriately aligned and of sufficient length, signal potential candidates. Test sample sets were analysed to evaluate the effective discrimination of the technique. Over 91,000 USNO-B1.0 catalogue entries at points throughout the celestial sphere were then filtered for acceptable combinations of entry observations and magnitudes and the resulting total of about 17,000 entries was winnowed down to a little more than 200 objects of interest. These were screened by visual examination of photo images to a final total of 146 candidates. About one quarter of these candidates coincide with SDSS data. Those constituents fall into two groups, single and paired objects. SDSS identified several galaxies in the first group. Regarding the second group, at least half of its members were tentatively identified as main-sequence pairs, the greater portion being of widely separated spectral types. Two white dwarf--main-sequence pairs were also identified. Most importantly, the vectors formed from USNO-B1.0 residuals were in alignment with corresponding SDSS pair position angles, thereby supporting this work`s central thesis.
description: 20 pages, 7 tables, 5 figures