cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effects of electrode surface roughness on motional heating of trapped ions
Creators: name: Lin, Kuan-Yu
name: Low, Guang Hao
name: Chuang, Issac L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Electric field noise is a major source of motional heating in trapped ion quantum computation. While the influence of trap electrode geometries on electric field noise has been studied in patch potential and surface adsorbate models, only smooth surfaces are accounted for by current theory. The effects of roughness, a ubiquitous feature of surface electrodes, are poorly understood. We investigate its impact on electric field noise by deriving a rough-surface Green's function and evaluating its effects on adsorbate-surface binding energies. At cryogenic temperatures, heating rate contributions from adsorbates are predicted to exhibit an exponential sensitivity to local surface curvature, leading to either a large net enhancement or suppression over smooth surfaces. For typical experimental parameters, orders-of-magnitude variations in total heating rates can occur depending on the spatial distribution of absorbates. Through careful engineering of electrode surface profiles, our results suggests that heating rates can be tuned over orders of magnitudes.
description: 12 pages, 5 figures
Quality Investigation of Carbon Contaminated B-Doped Multicrystalline Silicon Ingot
Creators: name: Ban, N.
name: Dhamrin, M.
name: Suzuki, S.
name: Ogawa, K.
name: Furuichi, K.
name: Suzuki, H.
name: Saitoh, T.
name: Kamisako, K.
name: Mori, T.
name: Iwamoto, N.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 1579-1582
description: In this work, to examine the influence of carbon on the quality of multicrystalline silicon ingot, 10 Kg
electronic grade silicon was charged with 100 ppma carbon in a SiN-coated silica crucible. The average resistivity of
mc-Si ingot was around 1.2 Ω·cm at the center of ingot. Carrier lifetimes around 10 μs were realized after the ingot
growth mainly at the center of the carbon contaminated B-doped ingot. Metal impurities of the ingot were removed
by phosphorus gettering and carrier lifetimes were improved to reach as high as 100 μs at the center of the ingot.
Solar cells were fabricated on wafers cut from the carbon contaminated B-doped silicon ingot and electrical
characteristics were measured using solar simulator.
title: Army Permit No. SAJ-2016-3367 (201603367) - City of Sanibel - Living Shoreline Project
titleType: AlternativeTitle
title: Endangered Species Act - Section 7 Consultation Biological Opinion SAJ-2016-03367(SP-ACM), Sanibel Living Shoreline, Sanibel, Lee County, Florida
Creators: name: United States. National Marine Fisheries Service. Southeast Region
Publisher: name: United States. National Marine Fisheries Service. Southeast Region
Year: 2017

description: SERO-2017-01818
O que é Tudo?
Creators: name: Reis, Clea Mara Barradas dos
name: Medeiros, Ana Ligia
name: Lessa, Luziana Jordão
Publisher: name: Zenodo
Year: 2022

description: Apresentação realizada na sessão O meu Póster em 40 segundos da 13ª Conferência Lusófona de Ciência Aberta, formato híbrido, de 10 a 12 de outubro de 2022.
Iron Gettering in CZ Silicon Solar Cells
Creators: name: Laades, A.
name: Lauer, K.
name: Blech, M.
name: Maier, C.
name: Alber, D.
name: Bähr, M.
name: Lawerenz, A.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2157-2159
description: We investigated the impact of using low purity single crystalline CZ silicon on the performance of
silicon solar cells manufactured in the industrial process lines. Groups of wafers carefully chosen from a highly
contaminated ingot as well as an initially pure one (as reference) underwent various high temperature steps as
encountered at different stages of the process chain. The analysis was carried out by means of minority carrier
lifetime measurements, which also serve to assess the interstitial iron content. The total concentration of the existing
impurities at the beginning and end of the process line was evaluated using neutron activation analysis. Our results
show that initially contaminated CZ silicon responds very positively to segregation gettering provided by
phosphorous diffusion, aluminum alloying and post-diffusion annealing. A skilled tailoring of these steps results in a
huge reduction of the interstitial iron content and a very considerable increase of the charge carrier lifetime. Results
of the neutron activation analysis pointed to the gettering of other impurities than iron.
title: Army Permit No. SAJ-2017-572 (201700572) - Timothy Chapnick - Seawall Project
titleType: AlternativeTitle
title: Endangered Species Act - Section 7 Consultation Biological Opinion SAJ-2017-00572(NW-SJR), Chapnick Seawall, Cape Coral, Lee County, Florida
Creators: name: United States. National Marine Fisheries Service. Southeast Region
Publisher: name: United States. National Marine Fisheries Service. Southeast Region
Year: 2017

description: SERO-2017-01817
Realization of a Cost Effective Production Technology for Single Junction Amorphous Silicon Solar Modules
Creators: name: Banerjee, C.
name: Ratheesh Kumar, P.M.
name: Mohanchandran, K.
name: Prasanth, S.
name: Barua, A.K.
Publisher: name: WIP
Year: 2011
Subjects: Thin Film Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 2348-2349
description: Bringing down the cost of solar photovoltaic electricity to reach grid parity is now the highest priority.
Thin film silicon solar cells have their own space in photovoltaic industry due to their better performance in diffused
light, at higher module temperature etc.HHV with its state-of-the-art process and costeffective manufacturing technology
refined over several years of research, offers a complete production line of reliable equipments for the manufacture of a-
Si solar photovoltaic (PV) modules along with process.. With the optimised equipment cost and optimum consumable
usage, it has demonstrated that very cost effective single junction a-Si based solar cells can be made. Steps have been
taken to further bring down the cost by developing high efficiency next generation tandem cells combining
microcrystalline technology and amorphous crystalline technology in the near future.
title: Army Permit No. SAJ-2017-1801 (201701801), Glenn Alessi - Seawall Project
titleType: AlternativeTitle
title: Endangered Species Act - Section 7 Consultation Biological Opinion Proposed USACE issuance of 2 regulatory permits batched together in this consultation: Glenn Alessi Seawall SAJ-2017-01801(NW-SJR) and Carmine Paolucci Seawall SAJ-2017-01802(NW-SJR)
Creators: name: United States. National Marine Fisheries Service. Southeast Region
Publisher: name: United States. National Marine Fisheries Service. Southeast Region
Year: 2017

description: SERO-2017-01815 ; SERO-2017-01816
title: Clear Creek Integrated Restoration
titleType: AlternativeTitle
title: Endangered Species Act Section 7 Reinitiation of Formal Consultation and Magnuson–Stevens Fishery Conservation and Management Act Essential Fish Habitat Consultation for the Clear Creek Integrated Restoration, Clear Creek, HUCs 170603040101, 170603040102, 170603040103, Idaho County, Idaho (One Project)
Creators: name: United States. National Marine Fisheries Service. West Coast Region
Publisher: name: United States. National Marine Fisheries Service. West Coast Region
Year: 2022

description: WCRO-2022-01540
A toy model of black hole complementarity
Creators: name: Banerjee, Souvik
name: Bryan, Jan-Willem
name: Papadodimas, Kyriakos
name: Raju, Suvrat
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the algebra of simple operators defined in a time band in a CFT with a holographic dual. When the band is smaller than the light crossing time of AdS, an entire causal diamond in the center of AdS is separated from the band by a horizon. We show that this algebra obeys a version of the Reeh-Schlieder theorem: the action of the algebra on the CFT vacuum can approximate any low energy state in the CFT arbitrarily well, but no operator within the algebra can exactly annihilate the vacuum. We show how to relate local excitations in the complement of the central diamond to simple operators in the band. Local excitations within the diamond are invisible to the algebra of simple operators in the band by causality, but can be related to complicated operators called "precursors". We use the Reeh-Schlieder theorem to write down a simple and explicit formula for these precursors on the boundary. We comment on the implications of our results for black hole complementarity and the emergence of bulk locality from the boundary.
description: 24 pages
title: Army Permit No. SAJ-2017-1736 (201701736), Michael Bilek - Seawall Project
titleType: AlternativeTitle
title: Endangered Species Act - Section 7 Consultation Biological Opinion SAJ-2017-1736 (NW-SJR), Bilek Seawall Installation, Cape Coral, Lee County, Florida
Creators: name: United States. National Marine Fisheries Service. Southeast Region
Publisher: name: United States. National Marine Fisheries Service. Southeast Region
Year: 2017

description: SERO-2017-01814
Photoconductance-Based Excess Carrier Lifetime Measurements on Unpassivated Silicon Samples
Creators: name: Roth, T.
name: Rosenits, P.
name: Warta, W.
name: Glunz, S.W.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2004-2007
description: Measurement techniques which rely on the exact knowledge of the actual generation rate
within a silicon sample (such as quasi-steady-state photoconductance measurements) are significantly
affected by spectral variations of the illumination source. This is especially the case when using
supplementary long-pass filters, in order to ensure a more symmetrical excess carrier profile within lowlifetime
silicon samples. In this contribution the effect of different illumination spectra on
photoconductance-based lifetime measurements will be investigated in detail. The calculations are based
on reliable measurements of the optical properties of the samples and the reference cell, as well as the
used photo flash spectra. Two different simple approaches to calculate the excess carrier generation rate
are presented and compared. Evaluations are exemplarily performed on a set of unpassivated thicknessvaried
silicon samples, revealing generation rate deviations as high as 21 % for different sample
thicknesses and illumination spectra. Additionally, the effect of the different excitation spectra on the
measured effective lifetime will be shown
First Search for an X-ray -- Optical Reverberation Signal in an Ultraluminous X-ray Source
Creators: name: Pasham, Dheeraj R.
name: Strohmayer, Tod E.
name: Cenko, S. Bradley
name: Trippe, Margaret L.
name: Mushotzky, Richard F.
name: Gandhi, Poshak
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Using simultaneous optical (VLT/FORS2) and X-ray (XMM-Newton) data of NGC 5408, we present the first ever attempt to search for a reverberation signal in an ultraluminous X-ray source (NGC 5408 X-1). The idea is similar to AGN broad line reverberation mapping where a lag measurement between the X-ray and the optical flux combined with a Keplerian velocity estimate should enable us to weigh the central compact object. We find that although NGC 5408 X-1's X-rays are variable on a timescale of a few hundred seconds (RMS of 9.0$\pm$0.5%), the optical emission does not show any statistically significant variations. We set a 3$σ$ upper limit on the RMS optical variability of 3.3%. The ratio of the X-ray to the optical variability is an indicator of X-ray reprocessing efficiency. In X-ray binaries, this ratio is roughly 5. Assuming a similar ratio for NGC 5408 X-1, the expected RMS optical variability is $\approx$2% which is still a factor of roughly two lower than what was possible with the VLT observations in this study. We find marginal evidence (3$σ$) for optical variability on a $\sim$ 24 hour timescale. Our results demonstrate that such measurements can be made, but photometric conditions, low sky background levels and longer simultaneous observations will be required to reach the optical variability levels similar to X-ray binaries.
description: Accepted for publication in ApJ
Light Induced Degradation in Monocrystalline Silicon Wafers Made from the Metallurgical Route
Creators: name: Søndenå, R.
name: Holt, A.
name: Soiland, A.-K.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 1586-1590
description: In the present study the light induced degradation (LID) in Czochralski-wafers consisting of 33% compensated ESS
material and 67% polysilicon is studied. Reference wafers from Cz-crystals containing 100% polysilicon with
corresponding net doping pulled under identical conditions are also studied. Minority carrier lifetimes for different
positions in the crystals are measured using MW-PCD and QssPC immediately after annealing, during and after light
induced degradation. An improvement in lifetimes was seen upon phosphorous gettering, however, boron-oxygen
complexes are found to limit the lifetime in the wafers. The LID in compensated Cz-silicon containing 33% ESS is
found to be comparable to the degradation in the reference wafers. Thus, the degradation is found to depend on the
net doping and not the total doping concentration in the compensated silicon. Furthermore, the Czochralski-silicon
containing 33% ESS material showed less degradation with lowered boron concentrations. In the tail end of the
crystal, where the oxygen concentration decreases, less degradation is also observed.
title: Army Permit No. SAJ-2017-1114 (201701114) - Nelson Hadler - Seawall Project
titleType: AlternativeTitle
title: Endangered Species Act - Section 7 Consultation Biological Opinion SAJ-2017-1114 (NW-SJR), Nelson Hadler Seawall Project, Cape Coral, Lee County, Florida
Creators: name: United States. National Marine Fisheries Service. Southeast Region
Publisher: name: United States. National Marine Fisheries Service. Southeast Region
Year: 2017

description: SERO-2017-01813
title: Army Permit No. SAJ-2017-1239 (201701239) Nick Busche - Seawall Project
titleType: AlternativeTitle
title: Endangered Species Act - Section 7 Consultation Biological Opinion SAJ-2017-1 239 (NW-SJR), Busche Seawall Installation, Cape Coral, Lee County, Florida
Creators: name: United States. National Marine Fisheries Service. Southeast Region
Publisher: name: United States. National Marine Fisheries Service. Southeast Region
Year: 2017

description: SERO-2017-01812
title: Marine Mammal Health and Stranding Response Program
titleType: AlternativeTitle
title: NATIONAL MARINE FISHERIES SERVICE ENDANGERED SPECIES ACT SECTION 7 BIOLOGICAL AND CONFERENCE OPINION Issuance of permit No. 18786-01 to the Marine Mammal Health and Stranding Response Program pursuant to sections 109(h), 112(c), 104(c) and Title IV: of the Marine Mammal Protection A~t and section lO(a)(l)(A) of the Endangered Species Act, and Implementation of the Marine Mammal Health and Stranding Response Program
Creators: name: United States. National Marine Fisheries Service. Office of Protected Resources
Publisher: name: United States. National Marine Fisheries Service. Office of Protected Resources
Year: 2016

description: OPR-2016-00824
A New Method for Constructing Circuit Codes
Creators: name: Byrnes, Kevin M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05C

description: Circuit codes are constructed from induced cycles in the graph of the $n$ dimensional hypercube. They are both theoretically and practically important, as circuit codes can be used as error correcting codes. When constructing circuit codes, the length of the cycle determines its accuracy and a parameter called the spread determines how many errors it can detect. We present a new method for constructing a circuit code of spread $k+1$ from a circuit code of spread $k$. This method leads to record code lengths for circuit codes of spread $k=7 \text{ and } 8$ in dimension $22\le n\le 30$. We also derive a new lower bound on the length of circuit codes of spread 4, improving upon the current bound for dimension $n\ge 86$.
description: 9 pages, 1 figure, 4 tables
Sizing of a Multifunctional PV-Inverter for Smart Grids
Creators: name: Vallvé, X.
name: Graillot, A.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Components for PV Systems
Balance of System Components

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 3054-3058
description: In future electric grids the dispatch strategies will have to be adapted to a high fraction of distributed photovoltaic electricity generation injected from the consumer side. To obtain more added value, buildings that have PV generation should not suffer interruptions during grid black outs as is the case nowadays. PV generation with micro storage is a research topic on in which TTA, together with European partners, participates in an european project named “SoS-PVi” that started at the end of 2005 and will finish at the end of 2008. The paper explores how micro-storage could minimize some distribution problems for the end-user (micro cut-off, black-out) and could allow injection into the grid with dispatch strategies that combine deferred PV generation and demand-side management of domestic loads. The main objectives of this innovative concept can be summarised as:
- Study the distribution grid quality to get a reference for introduction of distributed generation devices.
- Estimation of market potential for small distributed generation and grid stabilization systems in Europe.
- Analysis of the typical load profiles in order to identify the consumption peaks.
- Technical requirements for the system, including all its functionalities and three storage technologies: Pb-acid, Li ion and supercapacitors.
- Demand side management strategies.
title: Challis Creek Road Repair Project
titleType: AlternativeTitle
title: Endangered Species Act Section 7(a)(2) Biological Opinion, and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Consultation for the Salmon-Challis National Forest Challis Creek Road Repair Project, HUC #1706020117 Challis Creek, Custer County, Idaho
Creators: name: United States. National Marine Fisheries Service. West Coast Region
Publisher: name: United States. National Marine Fisheries Service. West Coast Region
Year: 2016

description: WCRO-2016-00831
title: United States-Mexico_Canada Agreement Mitigation of Contaminated Transboundary Flow
titleType: AlternativeTitle
title: Endangered Species Act (ESA) Section 7(a)(2) Biological Opinion and Magnuson–Stevens Fishery Conservation and Management Act Essential Fish Habitat Response Issuance of U.S. appropriations under the U.S.–Mexico–Canada Agreement (USMCA) Implementation Act
Creators: name: United States. National Marine Fisheries Service. West Coast Region
Publisher: name: United States. National Marine Fisheries Service. West Coast Region
Year: 2022

description: WCRO-2022-02064
Monitoring and Comparing the Long-Term Performance of Different PV Systems Under the Same Environmental Conditions
Creators: name: Musikowski, H.-D.
name: Styczynski, Z.A.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Components for PV Systems
Engineering and System Integration

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 3076-3079
description: In a long-term research project, begun in 2000, several grid-connected PV systems using sc-Si-, mc-Si-, and CIS-modules are being analyzed in their operational behavior under the same climatic conditions in Magde-burg, Germany. This paper especially focuses on the differences in the operational behavior between these PV sys-tems and on changes of the performance under real conditions over a long operational time.
The three PV systems are connected to a computer-based measurement system to data log the environmental condi-tions and the electric parameters at the dc input and ac output of each PV inverter.
All of these parameters are measured as time series in one-minute time steps. For analysis purposes these datasets were averaged to hourly values and 15-minutes-values.
Based on the analysis of our measured data sets during an operating period of more than 8 years, we have not found significant changes in performance of these PV systems. The results indicate that we can expect a stable long-term performance of these PV systems over many years. The performance ratio (PR) for all analyzed PV systems is gener-ally steady and in a good range of 70 % to 80 % during each of the operating years.
The Power of Principled Bayesian Methods in the Study of Stellar Evolution
Creators: name: von Hippel, Ted
name: van Dyk, David A.
name: Stenning, David C.
name: Robinson, Elliot
name: Jeffery, Elizabeth
name: Stein, Nathan
name: Jefferys, William H.
name: O'Malley, Erin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: It takes years of effort employing the best telescopes and instruments to obtain high-quality stellar photometry, astrometry, and spectroscopy. Stellar evolution models contain the experience of lifetimes of theoretical calculations and testing. Yet most astronomers fit these valuable models to these precious datasets by eye. We show that a principled Bayesian approach to fitting models to stellar data yields substantially more information over a range of stellar astrophysics. We highlight advances in determining the ages of star clusters, mass ratios of binary stars, limitations in the accuracy of stellar models, post-main-sequence mass loss, and the ages of individual white dwarfs. We also outline a number of unsolved problems that would benefit from principled Bayesian analyses.
description: 21 pages, 12 figures in The Ages of Stars, Edited by Y. Lebreton, D. Valls-Gabaud and C. Charbonnel. EAS Publications Series, Volume 65, 2014, pp.267-287
The Optimization and Mass Production of 5.7 m2 a-Si:H/µc-Si:H Thin-Film Solar Modules
Creators: name: Gau, S.C.
Publisher: name: WIP
Year: 2011
Subjects: Thin Film Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 2344-2347
description: A facility with the production capacity of 130MW a-Si:H/c-Si:H thin-film solar modules has entered
mass production in Nanchang, China. The devices are deposited onto TCO glass, which has a resistance of 11-14
Ω/sq with a transmittance of 78.5%. The narrow range of efficiency distribution in the histogram shown indicates that
the production is in a mature state. The average total area stabilized module efficiency is higher than 9.2% for a
module area of 2.2m x 2.6m. Light induced degradations for four modules are measured by TUV Rheinland and
show an average of 12.37%, which is substantially lower than that of typical a-Si:H modules. The quantum
efficiencies for the a-Si:H layer and c-Si:H layer in the tandem device have been measured to determine the
thickness of the a-Si:H and c-Si:H layers. A SEM for the cross-section of a-Si:H/c-Si:H device show that the a-
Si:H and c-Si:H film thicknesses are approximately 270nm and 1700nm respectively. The I-V curves of a 2.2m x
2.6m module show a conversion efficiency higher than 9.7%. Methodes for improving the light-trappings of the
device are also discussed.
Multi Solar (PVT) Air Conditioning System
Creators: name: Elazari, A.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Components for PV Systems
Engineering and System Integration

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 3074-3075
description: A new innovation technology includes Multi Solar Air Conditioning system using the Multi Solar (PV/T) Collectors System and an Air conditioning unit that using the excessive solar thermal energy produced by the Multi Solar System (MSS).
Pilot-Line Processing of Cz-Si MWT Solar Cells with an Efficiency Gain of 0,3%
Creators: name: Lahmer, D.
name: Lossen, J.
name: Meyer, K.
name: Krokoszinski, H.-J.
name: Clement, F.
name: Menkoe, M.
name: Hönig, R.
name: Biro, D.
name: Preu, R.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2168-2171
description: The main objective of Bosch Solar Energy AG is the reduction of the production cost of PV
modules. One approach is the development of high efficiency back contact solar cells. The Metal Wrap Through
(MWT) solar cell concept is considered by Bosch Solar Energy AG to be a first and, in terms of additionally required
process steps, least complex cell to realize the well known advantages of the back contact concepts. The primary
advantages of the MWT concept are the current gain due to less metallization on the front side as well as an
efficiency increase caused by the MWT module technology. Our intent is the transfer of the MWT concept to Cz-
Silicon which is to our knowledge done for the first time on an industrial scale. In addition to solar cell and module
results of MWT produced on Cz-Silicon, high cell efficiencies of mc-Si MWT, based on the same layout, are shown
for comparison. With respect to conventional reference cells an efficiency gain of 0.3 % for Cz-Silicon MWT and of
0.5 % for mc-Si MWT with remarkable 16.8 % for the best mc-Si MWT cell could be shown.
Sharp Predictions from Eternal Inflation Patches in D-brane Inflation
Creators: name: Hertog, Thomas
name: Janssen, Oliver
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We numerically generate the six-dimensional landscape of D3-brane inflation and identify patches of eternal inflation near sufficiently flat inflection points of the potential. We show that reasonable measures that select patches of eternal inflation in the landscape yield sharp predictions for the spectral properties of primordial perturbations on observable scales. These include a scalar tilt of .936, a running of the scalar tilt -.00103, undetectably small tensors and non-Gaussianity, and no observable spatial curvature. Our results explicitly demonstrate that precision cosmology probes the combination of the statistical properties of the string landscape and the measure implied by the universe's quantum state.
description: 44 pages, 11 figures
A Novel Topology and PLL Algorithm for Grid-Connected Photovoltaic Power Conditioning System
Creators: name: Min, B.D.
name: Lee, J.
name: Kim, J.H.
name: Kim, T.J.
name: You, D.W.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Components for PV Systems
Balance of System Components

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 3041-3044
description: In this paper, a new PLL algorithm using FFT concept and topology are presented for grid-connected photovoltaic power conditioning system. General PLL algorithms for grid-connected PV PCS had d-q transformation
and controller to make zero the imaginary part of transformed voltage vector. In real world, grid voltage is not ideal. It may be unbalance, noisy and have many harmonics. For these reasons, the d-q transformed components are not pure DC. The controller tuning of PLL algorithm is difficult. The proposed PLL algorithm using FFT concept can use the strong noise cancelation characteristics of FFT and has no controller. Therefore, the proposed PLL algorithm has no gain-tuning, and is nearly not influenced from voltage drop, phase step change, harmonics. The proposed topology for PV PCS can dramatically reduce the converter power ratings and increase the efficiency of total PV PCS system. According to analysis of PV characteristics, in proposed topology, only 20% power of total PV system power is needed for DC/DC converter. DC/DC converter used in proposed topology has flat efficiency curve throughout all load range and very high efficiency characteristics. In propose topology, because the converter efficiency curve is flat throughout all load range, the total system efficiency at the low power range is dramatically improved. The proposed topology is implemented for 250kW PCS system. This system has only four DC/DC converters with 24kW power rating each other. It is only one-third of total system power. The experiment results show that the proposed PLL algorithm and topology have good performances.
Formation Mechanism of Guided Resonances and Bound States in the Continuum in Photonic Crystal Slabs
Creators: name: Gao, Xingwei
name: Hsu, Chia Wei
name: Zhen, Bo
name: Lin, Xiao
name: Joannopoulos, John D.
name: Soljačić, Marin
name: Chen, Hongsheng
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We develop a formalism, based on the mode expansion method, to describe the guided resonances and bound states in the continuum (BICs) in photonic crystal slabs with one-dimensional periodicity. This approach provides analytic insights to the formation mechanisms of these states: the guided resonances arise from the transverse Fabry-Pérot condition, and the divergence of the resonance lifetimes at the BICs is explained by a destructive interference of radiation from different propagating components inside the slab. We show BICs at the center and on the edge of the Brillouin zone protected by symmetry, as well as BICs at generic wave vectors not protected by symmetry.
description: 12 pages, 3 figures
Reconstruction of Order Flows using Aggregated Data
Creators: name: Toke, Ioane Muni
Publisher: name: arXiv
Year: 2016
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: FOS: Economics and business

description: In this work we investigate tick-by-tick data provided by the TRTH database for several stocks on three different exchanges (Paris - Euronext, London and Frankfurt - Deutsche Börse) and on a 5-year span. We use a simple algorithm that helps the synchronization of the trades and quotes data sources, providing enhancements to the basic procedure that, depending on the time period and the exchange, are shown to be significant. We show that the analysis of the performance of this algorithm turns out to be a a forensic tool assessing the quality of the aggregated database: we are able to track through the data some significant technical changes that occurred on the studied exchanges. We also illustrate the fact that the choices made when reconstructing order flows have consequences on the quantitative models that are calibrated afterwards on such data. Our study also provides elements on the trade signature, and we are able to give a more refined look at the standard Lee-Ready procedure, giving new elements on the way optimal lags should be chosen when using this method. The findings are in line with both financial reasoning and the analysis of an illustrative Poisson model of the order flow.
description: 32 pages, 7 tables, 14 figures
High-Dimensional Stochastic Design Optimization by Adaptive-Sparse Polynomial Dimensional Decomposition
Creators: name: Rahman, Sharif
name: Ren, Xuchun
name: Yadav, Vaibhav
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: Optimization and Control (math.OC)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 26B49, 41A61, 49K30, 60H35, 65C60

description: This paper presents a novel adaptive-sparse polynomial dimensional decomposition (PDD) method for stochastic design optimization of complex systems. The method entails an adaptive-sparse PDD approximation of a high-dimensional stochastic response for statistical moment and reliability analyses; a novel integration of the adaptive-sparse PDD approximation and score functions for estimating the first-order design sensitivities of the statistical moments and failure probability; and standard gradient-based optimization algorithms. New analytical formulae are presented for the design sensitivities that are simultaneously determined along with the moments or the failure probability. Numerical results stemming from mathematical functions indicate that the new method provides more computationally efficient design solutions than the existing methods. Finally, stochastic shape optimization of a jet engine bracket with 79 variables was performed, demonstrating the power of the new method to tackle practical engineering problems.
description: 18 pages, 2 figures, to appear in Sparse Grids and Applications--Stuttgart 2014, Lecture Notes in Computational Science and Engineering 109, edited by J. Garcke and D. Pfl\"{u}ger, Springer International Publishing, 2016
Temperature Characteristics Analysis of Multicrystalline Si Solar Cell by SPICE
Creators: name: Uchida, M.
name: Nishioka, K.
name: Saito, N.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2130-2132
description: We proposed a modified 2-diode equivalent circuit model for analysis of temperature characteristics of
multicrystalline Si solar cell by commonly used circuit simulator. By using the temperature analysis function of
SPICE, we can calculate the temperature characteristics of diodes based on theoretical equations. So, we calculated
the I-V characteristics of solar cell at various temperatures using the extracted parameters at room temperature. The
calculated values of I-V characteristics agreed well with the measured values at various temperatures. By using the
modified 2-diode model calculation, we can separate the current into the diffusion current component (J1),
recombination current component (J2) and shunt current component (Jsh).
Tracing black hole accretion with SED decomposition and IR lines: from local galaxies to the high-z Universe
Creators: name: Gruppioni, C.
name: Berta, S.
name: Spinoglio, L.
name: Pereira-Santaella, M.
name: Pozzi, F.
name: Andreani, P.
name: Bonato, M.
name: De Zotti, G.
name: Malkan, M.
name: Negrello, M.
name: Vallini, L.
name: Vignali, C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present new estimates of AGN accretion and star-formation luminosity in galaxies obtained for the local 12-$μ$m sample of Seyfert galaxies (12MGS), by performing a detailed broad-band spectral energy distribution (SED) decomposition including the emission of stars, dust heated by star formation and a possible AGN dusty torus. Thanks to the availability of data from the X-rays to the sub-millimetre, we constrain and test the contribution of the stellar, AGN and star-formation components to the SEDs. The availability of Spitzer-IRS low resolution mid-infrared (mid-IR) spectra is crucial to constrain the dusty torus component at its peak wavelengths. The results of SED-fitting are also tested against the available information in other bands: the reconstructed AGN bolometric luminosity is compared to those derived from X-rays and from the high excitation IR lines tracing AGN activity like [Ne V] and [O IV]. The IR luminosity due to star-formation (SF) and the intrinsic AGN bolometric luminosity are shown to be strongly related to the IR line luminosity. Variations of these relations with different AGN fractions are investigated, showing that the relation dispersions are mainly due to different AGN relative contribution within the galaxy. Extrapolating these local relations between line and SF or AGN luminosities to higher redshifts, by means of recent Herschel galaxy evolution results, we then obtain mid- and far-IR line luminosity functions useful to estimate how many star-forming galaxies and AGN we expect to detect in the different lines at different redshifts and luminosities with future IR facilities (e.g., JWST, SPICA).
description: 27 pages, 13 figures, 7 tables. MNRAS in press
Effect of Better Insulation in a CRYSTALOX DS 250 Furnace During Melting and Solidification on the Furnace Operation
Creators: name: Syvertsen, M.
name: Juel, M.
name: Bellmann, M.P.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 1543-1545
description: The process time and energy consumption are important factors when yield and cost for a process is
considered. One possibility for controlling the heat flux in a Crystalox DS-250 furnace is to use a shutter underneath
the crucible which can be opened or closed in controllable ways. Originally this shutter is normally made of graphite.
This work shows what happens when the shutter is replaced by one made a material with heat conductivity approximately
40% lower than standard graphite material. The use of this material gave a reduction of the process time of 2.4
hour. This was in good agreement with theoretical modelling of the furnace where the reduction in process time was
calculated to be 2.5 hour. It is also shown that for a cast run with standard temperature profile, the energy consumption
during the complete cycle is reduced significantly.
Sensitivity Analysis of Furnace Material Properties in Czochralski Crystal Growth Method for Silicon
Creators: name: Asadi Noghabi, O.R.
name: M'Hamdi, M.
name: Jomâa, M.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 1558-1561
description: Reliability of the simulation results is crucially dependent on the input data and in particular on the thermo-physical
properties of the materials constituting the furnace such as thermal conductivity and emissivity of the surfaces.
Uncertainties are always involved in measurement of these parameters. A set of global 2D simulations has been
carried out in order to investigate the impact of each property on the simulation results. It has been shown that steel
emissivity and felt conductivity have a significant impact on melt/crystal interface deflection, thermal field and
energy consumption.
2D photochemical modeling of Saturn's stratosphere. Part II: Feedback between composition and temperature
Creators: name: Hue, V.
name: Greathouse, T. K.
name: Cavalié, T.
name: Dobrijevic, M.
name: Hersant, F.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Saturn's axial tilt produces seasons in a similar way as on Earth. Both the stratospheric temperature and composition are affected by this latitudinally varying insolation along the seasons. The thermal structure is controlled and regulated by the amount of hydrocarbons in the stratosphere, which act as absorbers and coolants from the UV to the far-IR spectral range, and this structure influences the amount of hydrocarbons. We study here the feedback between the chemical composition and the thermal structure by coupling a latitudinal and seasonal photochemical model with a radiative seasonal model. Our results show that the seasonal temperature peak in the higher stratosphere, associated with the seasonal increase of insolation, is shifted earlier than the maximum insolation peak. This shift is increased with increasing latitudes and is caused by the low amount of stratospheric coolants in the spring season. At 80$^{\circ}$ in both hemispheres, the temperature peak at 1d-2mbar is seen to occur half a season earlier than was previously predicted by radiative seasonal models that assumed spatially and temporally uniform distribution of coolants. This shift progressively decreases with increasing pressure, up to around the 0.5mbar pressure level where it vanishes. However, the thermal field has a small feedback on the abundance distributions. This feedback modifies the predicted equator-to-pole temperature gradient. The meridional gradients of temperature at the mbar pressure levels are better reproduced when this feedback is accounted for. At lower pressure levels, the thermal structure seems to depart from pure radiative seasonal equilibrium as previously suggested by Guerlet et al. (2014). Although the agreement with the absolute value of the stratospheric temperature observed by Cassini is moderate, it is a mandatory step toward a fully coupled GCM-photochemical model.
description: 23 pages, 8 figures, accepted for publication in Icarus
Modeling of Iron Distribution in a Mc-Si Ingot Based on Thermal History
Creators: name: Boulfrad, Y.
name: Øvrelid, E.J.
name: M'Hamdi, M.
name: Arnberg, L.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 1538-1542
description: Iron is among the most detrimental impurities present in p-type multicrystalline silicon for use in solar
cells. It is known that the main source of iron contamination is the crucible/coating during the melting, solidification and
cooling of the ingot. The aim of this work was to simulate the distribution of iron in a multicrystalline silicon 12 kg ingot
of 250mm diameter and about 100mm height, grown by unidirectional solidification method taking into account
segregation of iron from the melt to the solid silicon. COMSOL multiphysics software was used to resolve Fick's second
law of diffusion based on thermal history data measured and modelled previously. Effect of fast and slow cooling as well
as an extra annealing of 14 hours on iron distribution has been studied.
$\mathbb{A}^1$ curves on log K3 surfaces
Creators: name: Chen, Xi
name: Zhu, Yi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: In this paper, we study $\mathbb{A}^1$ curves on log K3 surfaces. We classify all genuine log K3 surfaces of type II which admits countably infinite $\mathbb{A}^1$ curves.
description: 25 pages. Comments are welcome!
Analysis of the Effect of Melt Flow  on Impurity Segregation during Directional Crystallization of Silicon in a Small Scale Furnace
Creators: name: Ellingsen, K.
name: M'Hamdi, M.
name: Mortensen, D.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 1562-1565
description: SiSim is a continuum model for simulation of Si casting/crystallization and cooling/reheating based
upon volume-averaged conservation principles for mass, solute, energy and momentum. The model has been applied
to study impurity transport during directional solidification using a coupled description of heat transfer, melt
convection and impurity transport. Segregation is described assuming no undercooling, a melting point invariant with
respect to composition and linearised binary phase diagrams. A case study of the impact of the flow pattern on the
final dopant and impurity distribution in the ingot is presented.
Analysis of the Short-Circuit Current Gains by an Anti-Reflective Texture Coating on Silicon Thin-Film Solar Cells
Creators: name: Ulbrich, C.
name: Zahren, C.
name: Noll, J.
name: Gerber, A.
name: Hermans, K.
name: Lambertz, A.
name: Rau, U.
Publisher: name: WIP
Year: 2011
Subjects: Thin Film Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 2329-2335
description: A polymeric foil with an anti-reflective texture was designed to improve the incoupling of light into a
solar cell and to enhance light-trapping in the weak absorption regime within the solar absorber. The textured foil can
be used on solar cells of different materials, e.g. Si, CdTe or Cu(In,Ga)Se2. We investigated the impact of the textured
foil mounted on top of silicon thin-film solar cells. The foil reduces the total reflectance r to values as low as r ≈ 3 %.
It ensures a better light-incoupling at the air-glass interface and re-directs the reflections from the internal interfaces
back into the solar absorber. At longer wavelengths, the textured foil also enhances the light-trapping of weakly
absorbed photons. For a planar microcrystalline solar cell the enhancement of light-trapping was determined from the
reduced reflection in the long wavelength range to be up to 17 % and up to 12% was determined from the increase of
the external quantum efficiency. For thin-film silicon tandem solar cells we demonstrate an increase of the short
circuit current density by up to 0.95 mA/cm², and of the conversion efficiency by up to 0.74 % (absolute).
Graviton laser
Creators: name: Landry, A.
name: Paranjape, M. B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the possibility of creating a graviton laser. The lasing medium would be a system of contained, ultra cold neutrons. Ultra cold neutrons are a quantum mechanical system that interacts with gravitational fields and with the phonons of the container walls. It is possible to create a population inversion by pumping the system using the phonons. We compute the rate of spontaneous emission of gravitons and the rate of the subsequent stimulated emission of gravitons. The gain obtainable is directly proportional to the density of the lasing medium and the fraction of the population inversion. The applications of a graviton laser would be interesting.
description: 8 pages, no figures, submitted to the 2016 Gravity Research Foundation Essay Competiton