cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hot Lattice - a New Approach to Hot Carrier Solar Cells
Creators: name: Liao, Y.
name: Feng, Y.
name: Conibeer, G.J.
name: Shrestha, S.
name: Huang, S.
Publisher: name: WIP
Year: 2014
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
New Materials and Concepts for Cells

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 325-327
description: This paper calculates the effects of interface thermal conductance of energy selective contacts on the
efficiency of hot carrier solar cells (HCSC). It proposes that hot lattice could enable HCSCs not to depend on the long
thermal lifetime and other ideal conditions and hence open a new approach to HCSC. This is due to the fact that when
lattice temperature approaching carrier temperature, thermalization loss drops. Calculation shows thermalized heat is
enough to heat thin absorbers to above 800K with low interface thermal conductance less than 100W/m2/k. In this
scenario, efficiency above 40% of a single cell is predicted by using more practical parameters.
The classification of Zamolodchikov periodic quivers
Creators: name: Galashin, Pavel
name: Pylyavskyy, Pavlo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: Mathematical Physics (math-ph)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 13F60 (Primary), 37K10, 05E99 (Secondary)

description: Zamolodchikov periodicity is a property of certain discrete dynamical systems associated with quivers. It has been shown by Keller to hold for quivers obtained as products of two Dynkin diagrams. We prove that the quivers exhibiting Zamolodchikov periodicity are in bijection with pairs of commuting Cartan matrices of finite type. Such pairs were classified by Stembridge in his study of $W$-graphs. The classification includes products of Dynkin diagrams along with four other infinite families, and eight exceptional cases. We provide a proof of Zamolodchikov periodicity for all four remaining infinite families, and verify the exceptional cases using a computer program.
description: 40 pages, 23 figures. Final version to appear in Amer. J. Math
UniSAFE: Institute Of Nuclear Physics Of The Polish Academy Of Sciences – institutional policy to address gender-based violence
Creators: name: Andreska, Zuzana
name: Huck, Averil
name: Linkova, Marcela
Publisher: name: Zenodo
Year: 2022
Subjects: Gender based-violence
policy framework
gender+
institutional policy

description: UniSAFE has mapped the policies and measures to address and combat GBV in 48 universities and research organisations in 15 European countries. For each institution, the team created Vignettes which present national context, institutional policy, training, role in knowledge production, content of the policy, institutional procedure and implementation of the policy.
Un Tempio Malatestiano 'romano' e 'bizantino' in un disegno rinascimentale della Soane Collection
Creators: name: Bulgarelli, Masimo
Publisher: name: La Rivista di Engramma
Year: 2008
Subjects: Alberti
Malatesta
temple
dome

description: This essay offers a comparison between Alberti’s Malatesta Temple as depicted on the reverse of Matteo Pasti’s medal and the one portrayed in a drawing belonging to John Soane’s collection.
Photon-Enhanced Thermionic Emission in Cesiated p-Type and n-Type Silicon
Creators: name: Reck, K.
name: Dionigi, F.
name: Hansen, O.
Publisher: name: WIP
Year: 2014
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
New Materials and Concepts for Cells

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 328-330
description: Photon-enhanced thermionic emission (PETE) is a relatively new concept for high efficiency solar cells that
utilize not only the energy of electrons excited across the band gap by photons, as in conventional
photovoltaic solar cells, but also the energy usual lost to thermalization of the excited electrons. Efficiencies
above 60% have been predicted theoretically for high solar concentration systems. Silicon is an interesting
absorber material for high efficiency PETE solar cells, partly due to its mechanical and thermal properties and
partly due to its electrical properties, including a close to ideal band gap. The work function of silicon is,
however, too high for practical PETE implementations. A well-known method for lowering the work function
of silicon (and other materials) is to apply approximately a monolayer of cesium to the silicon surface. We
present the first measurements of PETE in cesiated p-type and n-type silicon. It is shown that PETE in average
can increase the thermionic emission current by more than an order of magnitude.
Depleted Heterojunction ZnO/PbS Colloidal Quantum Dot Photovoltaic Cell
Creators: name: Philip, M.
name: Cowern, N.E.B
Publisher: name: WIP
Year: 2014
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
New Materials and Concepts for Cells

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 303-306
description: The quantum size effect makes it possible to tune the band gap of a quantum dot by simply varying its
size. This makes it possible to customize a material to absorb a specific range of the spectrum of sunlight. This
technique can be applied to PbS, a plentiful photoactive material that, unfortunately suffers from a low band gap of
0.41 eV in the bulk form. The quantum size effect allows the absorption onset wavelength of PbS nanocrystals to be
increased until it is in the visible range. Several device architectures have been investigated to harness fully the
advantages of PbS quantum dots as a photovoltaic material. The most widely studied device architecture is the
ZnO/PbS depleted heterojunction quantum dot photovoltaic cell. It consists of a bilayer of ZnO and PbS quantum
dots. The two materials form a Type II- Staggered Gap Heterojunction. This paper describes work that was done to
fabricate and test ZnO/PbS depleted heterojunction quantum dot photovoltaic cells.
Optical Properties for Solar Cell Structures by Coupling Ge Quantum Dot Multilayers with Textured Substrates
Creators: name: Hoshi, Y.
name: Tayagaki, T.
name: Aonuma, O.
name: Usami, N.
Publisher: name: WIP
Year: 2014
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
New Materials and Concepts for Cells

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 313-315
description: We propose coupling structures of Ge quantum dot (QD) multilayers with phosphorous-doped textured substrates for
realization of high performance solar cells. The coupling structures are fabricated by growth of Ge QDs after p-n
junction formation to suppress thermal diffusion of Ge atoms. For the coupling structures, the protection of
phosphorous-doped layers and the optimization of ion doping conditions are critical for improvement of solar cell
properties. We find that external quantum efficiency in the near-infrared wavelength increases by increasing Ge
coverage in the Ge QD multilayers owing to enhancement of optical absorption.
Free Subalgebras of Graded Algebras
Creators: name: Bell, Jason P.
name: Greenfeld, Be'eri
Publisher: name: arXiv
Year: 2016
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: Let $k$ be a field and let $A=\bigoplus_{n\ge 1}A_n$ be a positively graded $k$-algebra. We recall that $A$ is graded nilpotent if for every $d\ge 1$, the subalgebra of $A$ generated by elements of degree $d$ is nilpotent. We give a method of producing grading nilpotent algebras and use this to prove that over any base field $k$ there exists a finitely generated graded nilpotent algebra that contains a free $k$-subalgebra on two generators.
description: To appear in Journal of Algebra
A Comprehensive Performance Evaluation of Deformable Face Tracking "In-the-Wild"
Creators: name: Chrysos, Grigorios G.
name: Antonakos, Epameinondas
name: Snape, Patrick
name: Asthana, Akshay
name: Zafeiriou, Stefanos
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Recently, technologies such as face detection, facial landmark localisation and face recognition and verification have matured enough to provide effective and efficient solutions for imagery captured under arbitrary conditions (referred to as "in-the-wild"). This is partially attributed to the fact that comprehensive "in-the-wild" benchmarks have been developed for face detection, landmark localisation and recognition/verification. A very important technology that has not been thoroughly evaluated yet is deformable face tracking "in-the-wild". Until now, the performance has mainly been assessed qualitatively by visually assessing the result of a deformable face tracking technology on short videos. In this paper, we perform the first, to the best of our knowledge, thorough evaluation of state-of-the-art deformable face tracking pipelines using the recently introduced 300VW benchmark. We evaluate many different architectures focusing mainly on the task of on-line deformable face tracking. In particular, we compare the following general strategies: (a) generic face detection plus generic facial landmark localisation, (b) generic model free tracking plus generic facial landmark localisation, as well as (c) hybrid approaches using state-of-the-art face detection, model free tracking and facial landmark localisation technologies. Our evaluation reveals future avenues for further research on the topic.
description: E. Antonakos and P. Snape contributed equally and have joint second authorship
Shade Performance of a Novel High-Voltage Back-Contact Module
Creators: name: De Bruijne, M.
name: Jansen, M.J.
name: De Groot, K.M.
name: Carr, A.J.
name: Okel, L.A.G.
name: Kloos, M.J.H.
name: Eerenstein, W.
Publisher: name: WIP
Year: 2014
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
Novel Materials and Concepts for Modules

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 207-209
description: In this paper we present ECN’s new high-voltage module concept which is based on MWT backcontact
technology, and test its performance under shadow conditions. Controlled realistic shading tests were
performed for three shade cases that are typical for PV applications in the built environment (a pole shade, a tree
shade and a dormer shade). The relative power output (shaded over normal) of the high-voltage module was
compared to that of a conventional three string, 60-cell module. The new high-voltage module significantly
outperformed the conventional module: its shade performance was 1.1 to 4.2 times better, and its shade linearity was
around 80%.
The hyperbolic Brownian plane
Creators: name: Budzinski, Thomas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We introduce and study a new random surface which we call the hyperbolic Brownian plane and which is the near-critical scaling limit of the hyperbolic triangulations constructed in arXiv:1401.3297. The law of the hyperbolic Brownian plane is obtained after biasing the law of the Brownian plane arXiv:1204.5921 by an explicit martingale depending on its perimeter and volume processes studied in arXiv:1409.4026. Although the hyperbolic Brownian plane has the same local properties as those of the Brownian plane, its large scale structure is much different since we prove e.g. that is has exponential volume growth.
description: 32 pages, 1 figure. Published version
Lateral Composition Modulated GaInP for High Efficiency Tandem Solar Cells
Creators: name: Park, K.
name: Kang, S.J.
name: Ravindran, S.
name: Min, J.-W.
name: Lee, Y.T.
Publisher: name: WIP
Year: 2014
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
New Materials and Concepts for Cells

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 247-249
description: For tandem solar cells, increasing the generated photocurrent due to absorption of sunlight and
minimizing recombination of generated minority carriers is crucial for improving the solar cell performance which is
possible by using lateral composition modulated (LCM) structure. LCM GaInP has a smaller band gap compared to
bulk GaInP, and using them in the top cell of multi-junction solar cell is effective for increasing the light absorption
and the generated photocurrent. In this work we investigate the effect of embedding LCM GaInP on the solar cell
performance. Simulation results reveal that for LCM GaInP layer thickness up to 40 nm, the efficiency of the solar
cell can be increased. This is due to the increase in open circuit voltage owing to the increased light absorption by
both In-rich and Ga-rich GaInP layers of LCM structure. With further increase in LCM GaInP layer thickness, the
increase in efficiency is due to the increase in short circuit current density which is attributed to the enhanced light
absorption by the In-rich GaInP. These results show the potential of LCM GaInP structure as the top cell material for
realizing high-efficiency multi-junction tandem solar cells.
Experimental Study of Three Dimensional Photovoltaic Systems
Creators: name: Narayanan, M.
name: Nagarajan, J.
name: Valan Arasu, A.
Publisher: name: WIP
Year: 2014
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
Novel Materials and Concepts for Modules

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 198-201
description: Photovoltaics are widely used method to tap solar energy, but the disadvantage in this method is that
besides being costlier it occupies much space. So it is proposed to design three dimensional structures. In this
research 3 dimensional natural structures are designed and compared with a conventional two dimensional module
structure. Firstly the number of cells is made constant then the base area is made constant. These designs were
experimentally studied with prototypes. It was to find out the power output and plot day profile of all these designs on
a certain sunny day in the university premises. The purpose was to analyse them and to find out a better 3
Dimensional Photovoltaic system if 3D systems are more productive than the conventional modules. Firstly the
location of our experimentation is studied, then the types of cells are compared and one of it is selected and purchased
and the purchased cell’s characteristics are found out. The circuit diagram for the selected structures is designed and
fabricated. The structure selected for this research is Tree structure and Ellipsoid which is to be compared with a two
dimensional module prototype. Then the obtained results are tabulated and graphs are drawn and the best structure
out of them is selected. It is seen that the Tree structure outperforms the other models. For the constant base area
study it was found out that the tree structure can produce twice the amount of power as 2D module. With possibilities
to increase the number of cells and size of the solar tree than the fabricated prototype, it can be said that the area
required for a certain solar power system can be reduced to more than half by using the solar tree structure.
Nimbus: Nmos-Based Integrated Modular Bypass for Use in Solar Systems
Creators: name: Bauwens, P.
name: Doutreloigne, J.
Publisher: name: WIP
Year: 2014
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
Novel Materials and Concepts for Modules

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 202-206
description: Irradiance differences on PV cell level can cause the total output power of a PV panel to drop
disproportionally. If no action is taken, a single cell can limit the output current of the entire panel. Traditionally this
is solved by placing a bypass diode in parallel to a substring of cells. However, when such a diode is active, it creates
a significant voltage drop, and this dissipates power that we would rather see at the output. The SmartPV project, an
IWT-SBO project funded by the Flemish Government (Flanders, Belgium), aims at increasing the power yield of PV
panels under partial shading conditions. With each of the partners (imec, Ghent University, University of Leuven,
VITO) working in different areas, we at Ghent University developed a smart bypass. It takes over the function of a
bypass diode, while minimizing the power loss. It is a low-voltage-drop switch that is activated when a failing cell is
detected. The NIMBUS chip is a fully integrated smart bypass. The NIMBUS chip is designed for a load current of
5A, while limiting the voltage drop to 100mV. When larger load currents need to be provided, several NIMBUS
chips can be placed in parallel. An integrated synchronization circuit ensures that all parallel NIMBUS chips work as
one. A prototype of the NIMBUS was created, and the first measurements are presented. Also, the first steps in
creating a full module with NIMBUS devices are taken.
UniSAFE: Nicolaus Copernicus University – institutional policy to address gender-based violence
Creators: name: Andreska, Zuzana
name: Huck, Averil
name: Linkova, Marcela
Publisher: name: Zenodo
Year: 2022
Subjects: Gender based-violence
policy framework
gender+
institutional policy

description: UniSAFE has mapped the policies and measures to address and combat GBV in 48 universities and research organisations in 15 European countries. For each institution, the team created Vignettes which present national context, institutional policy, training, role in knowledge production, content of the policy, institutional procedure and implementation of the policy.
Theory of multiple--phase competition in pyrochlore magnets with anisotropic exchange, with application to Yb2Ti2O7, Er2Ti2O7 and Er2Sn2O7
Creators: name: Yan, Han
name: Benton, Owen
name: Jaubert, Ludovic D. C.
name: Shannon, Nic
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The family of magnetic rare-earth pyrochlore oxides R2M2O7 plays host to a diverse array of exotic phenomena, driven by the interplay between geometrical frustration and spin-orbit interaction, which leads to anisotropy in both magnetic moments and their interactions. In this article we establish a general, symmetry--based theory of pyrochlore magnets with anisotropic exchange interactions. Starting from a very general model of nearest-neighbour exchange between Kramers ions, we find four distinct classical ordered states, all with q=0, competing with a variety of spin-liquids and unconventional forms of magnetic order. The finite-temperature phase diagram of this model is determined by Monte Carlo simulation, supported by classical spin-wave calculations. We pay particular attention to the region of parameter space relevant to the widely studied materials Er2Ti2O7, Yb2Ti2O7, and Er2Sn2O7. We find that many of the most interesting properties of these materials can be traced back to the "accidental" degeneracies where phases with different symmetries meet. These include the ordered ground state selection by fluctuations in Er2Ti2O7, the dimensional-reduction observed in Yb2Ti2O7, and the lack of reported magnetic order in Er2Sn2O7. We also discuss the application of this theory to other pyrochlore oxides.
description: Long-paper version of "Living on the Edge", arXiv:1311.3501. 41 pages, 27 figures. Accepted for publication in Physical Review B
A Novel Approach to Yellowing Process and Formation of Chromophores in EVA Sheets by Two UV-Aging Methods
Creators: name: Lee, Y.-H.
name: Li, Y.-T.
name: Wang, B.F.
name: Lin, Y.-W.
name: Wu, H.-S.
name: Huang, D.-R.
Publisher: name: WIP
Year: 2014
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
Novel Materials and Concepts for Modules

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 140-142
description: Accelerated degradation tests by a UV pulsed laser and fluorescence tubes for ethylene vinyl acetate
(EVA) encapsulants were applied at ITRI. The glass/EVA/glass samples were prepared and irradiated by a 10 mJ,
355 nm UV pulsed laser with a repetition rate of 10 Hz and 5 ns pulse-duration. Both of the UV pulsed laser and
fluorescence tubes induced the change of yellowness index (YI). Our results showed that YI = 10 could be
achieved in 20 to 30 hours by a UV pulsed laser; Instead, YI value was still less than 2 by fluorescence tubes (60 ,
40 W/m2) in a chamber over 600 hours. Transmittance and Raman spectrum of the samples were investigated, and the
essential difference of polymer degradation in EVA films after accelerated tests by two UV methods were also
discussed in this work.
Planar Photonic Structures Light Management in Photovoltaic Modules
Creators: name: Peharz, G.
name: Nemitz, W.
name: Lamprecht, B.
Publisher: name: WIP
Year: 2014
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
Novel Materials and Concepts for Modules

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 177-180
description: A substantial part of the light impinging the surface of a state-of-the-art photovoltaic module is not
absorbed by the solar cells. Basically, output power is lost when part of the incident light does not reach the solar
cells. Here we present an approach to increase the light harvesting of photovoltaic modules. Planar light redirecting
structures fabricated by UV imprint lithography aim to decrease the optical losses especially in the region of the
module border (next to the frame). The approach is based on the integration of optical structures inside the module,
that shall redirect light, which otherwise would impinge the electrically inactive border region. The planar optical
elements reflect light at such angles that internal reflection at the front surface of the cover glass occurs. From there
the light is reflected back to the solar cell and contributes to the generated photocurrent. Based on LBIC
measurements it is found that a reflective saw-tooth structure can utilize about 5 times more light hitting a 1 cm wide
border region next to the cells than a white back-sheet. Moreover an alternative (patent pending) approach is
presented which does not require a reflective coating.
Parametrized Homology via Zigzag Persistence
Creators: name: Carlsson, Gunnar
name: de Silva, Vin
name: Kalisnik, Sara
name: Morozov, Dmitriy
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: This paper develops the idea of homology for 1-parameter families of topological spaces. We express parametrized homology as a collection of real intervals with each corresponding to a homological feature supported over that interval or, equivalently, as a persistence diagram. By defining persistence in terms of finite rectangle measures, we classify barcode intervals into four classes. Each of these conveys how the homological features perish at both ends of the interval over which they are defined.
Haubeck, Wilfrid und von Siebenthal, Heinrich: Neuer sprachlicher Schlüssel zum griechischen Neuen Testament
Creators: name: Stenschke, Christoph W.
Publisher: name: European journal of theology
Year: 2024

description: European journal of theology, V. 9 N. 2 (2000): European Journal of Theology, Band 9, Heft 2
Qualification Testing of PV Module Backsheet Using Self-Adhesive Aluminium Based Foil Compound
Creators: name: Rees, M.
Publisher: name: WIP
Year: 2014
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
Novel Materials and Concepts for Modules

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 143-146
description: In the on-going pursuit of increasing module reliability and decreasing module costs,
EppsteinTechnologies has developed contacfoil®-back, a lightweight and cost efficient backsheet with excellent
protection properties. It consists of an aluminium foil and an insulation/embedding layer directly laminated onto it.
The aluminium acting as the protection layer contains contact islands, which allow contacting the module circuit
without breaking the protection barrier. The insulation/embedding layer becomes adhesive during lamination, thereby
forming a stable compound with the other module components.
Here we report on the results of qualification tests, performed with the insulation materials as well as with 2x2
modules built with different embedding/insulation layers, each module containing 4 MWT-cells connected in series.
The tests aimed at verifying the following: Suitability of the electrical insulation properties of the used material,
reliability of the protection properties of the Al-layer as well as of the insulation/embedding layers and the stability
under full module current of the contact islands, providing the connection of the module circuit to the outside world.
Finally the applicability of this new backsheet in monolithic assembly processes was verified.
Improved Sparse Low-Rank Matrix Estimation
Creators: name: Parekh, Ankit
name: Selesnick, Ivan W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optimization and Control (math.OC)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We address the problem of estimating a sparse low-rank matrix from its noisy observation. We propose an objective function consisting of a data-fidelity term and two parameterized non-convex penalty functions. Further, we show how to set the parameters of the non-convex penalty functions, in order to ensure that the objective function is strictly convex. The proposed objective function better estimates sparse low-rank matrices than a convex method which utilizes the sum of the nuclear norm and the $\ell_1$ norm. We derive an algorithm (as an instance of ADMM) to solve the proposed problem, and guarantee its convergence provided the scalar augmented Lagrangian parameter is set appropriately. We demonstrate the proposed method for denoising an audio signal and an adjacency matrix representing protein interactions in the `Escherichia coli' bacteria.
description: 10 pages, 10 figures
Results of Pressure-Only Cell Interconnections in High Voltage PV-Modules
Creators: name: Halavani, Z.
name: Lang, J.
name: Summhammer, J.
Publisher: name: WIP
Year: 2014
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
Novel Materials and Concepts for Modules

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 64-68
description: PV-modules with small rectangular solar cells from polycrystalline silicon were made in which the cell interconnections consist of overlapping the cells and placing contact strips in between. The lamination pressure bends the cells around the contact strips, which ensures good contact by “pressure-only” after the encapsulating material has hardened. Results are presented of rapid aging tests on small modules and of up to one year of outdoor experience with large modules of the 240 W class. In the latter, all cells are connected in series to obtain operating voltages around 120 V and currents around 2 A. Contact strips with coatings of SnPbAg, Ag, and pure Cu were investigated. The Ag-coated “pressure-only” contact strips performed as good as soldered cell interconnections.
High Performance Amorphous Silicon/Crystalline Silicon Nanowires Radial Heterojunction Solar Cell
Creators: name: Dong, G.
name: Liu, F.
name: Zhang, H.
name: Zhou, Y.
name: Zhu, M.
Publisher: name: WIP
Year: 2014
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
New Materials and Concepts for Cells

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 50-52
description: High performance hydrogenated amorphous silicon/silicon nanowires (a-Si:H/SiNWs) radial
heterojunction (RHJ) solar cells were fabricated by hot wire chemical vapor deposition combined with
metal-assisted chemical etching. Excellent light trapping and effective collection of photogenerated
carriers in radial p–n junctions provide a short circuit current density enhancement of 25% compared with
that of the conventional planar solar cell. With fairly good surface passivation by atomic H treatment and
a-Si:H deposition, RHJ solar cell shows a high efficiency of 15.9%.
Redshift and luminosity evolution of the intrinsic alignments of galaxies in Horizon-AGN
Creators: name: Chisari, Nora Elisa
name: Laigle, Clotilde
name: Codis, Sandrine
name: Dubois, Yohan
name: Devriendt, Julien
name: Miller, Lance
name: Benabed, Karim
name: Slyz, Adrianne
name: Gavazzi, Raphael
name: Pichon, Christophe
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Intrinsic galaxy shape and angular momentum alignments can arise in cosmological large-scale structure due to tidal interactions or galaxy formation processes. Cosmological hydrodynamical simulations have recently come of age as a tool to study these alignments and their contamination to weak gravitational lensing. We probe the redshift and luminosity evolution of intrinsic alignments in Horizon-AGN between z=0 and z=3 for galaxies with an r-band absolute magnitude of 1 Mpc. Alignments of discs are null in projection and consistent with current low redshift observations. The combination of the two populations yields an overall amplitude a factor of ~4 lower than observed alignments of luminous red galaxies with a steeper luminosity dependence. The restriction on accurate galaxy shapes implies that the galaxy population in the simulation is complete only to an r-band absolute magnitude of
description: 23 pages, 17 figures, changes matching version accepted by MNRAS
Contacts Configuration for Novel Photoelectric-Thermionic Solar Cells
Creators: name: Sandovsky, R.
name: Segev, G.
name: Rosenwaks, Y.
name: Kribus, A.
Publisher: name: WIP
Year: 2014
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
New Materials and Concepts for Cells

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 43-45
description: Conversion of solar radiation to electricity with Photon Enhanced Thermionic Emission (PETE) uses
both photonic and thermal excitation of charge carriers in a semiconductor, and theoretically may achieve conversion
efficiency exceeding 50%. This work investigates the effect of the front grid of electrical contacts on the performance
of a PETE converter with a Si based cathode, using a 2-D detailed simulation. The impact of shading by the contacts,
charge transport at the contact surface, and dependence on operating temperature are analyzed. The results show that
the preferred device design is very different depending on the temperature, due to the different contributions of
photonic vs. thermal excitation.
Filtrations of dc-weak eigenforms
Creators: name: Rustom, Nadim
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F80, 11F33

description: The notions of strong, weak and dc-weak eigenforms mod $p^n$ was introduced and studied by Chen, Kiming and Wiese. In this work, we prove that there can be no uniform weight bound (that is, depending only on $p$, $n$) on dc-weak eigenforms mod $p^n$ of fixed level when $n \geq 2$. This is in contrast with the result of Kiming, Rustom and Wiese which establishes a uniform weight bound on strong eigenforms mod $p^n$. As a step towards studying weights bounds for weak eigenforms mod $p^n$, we provide a criterion which allows us to detect whether a given dc-weak eigenform mod $p^n$ is weak.
description: 26 pages. This is a revised version with several corrections. The statement of the main result is now more precise
Molecular mechanisms underlying hair shape variation in the human population
Creators: name: Riddell, Jon Robert
Publisher: name: The University of Edinburgh
Year: 2020
Subjects: hair
hair shape
EDAR
PRSS53
mouse model

description: Hair is one of the defining characteristics of mammals and functions in thermoregulation, protection, camouflage and social signalling. In humans, scalp hair is a distinctly variable trait, differing in colour, shape and density. Genome-wide association studies have identified two derived variants, that originated after human migration out of Africa and that are present at high frequency in East Asian populations, in the genes EDAR and PRSS53 as being associated with straight rather than curly hair. EDAR encodes Ectodysplasin A1 receptor, a transmembrane receptor involved in the development of ectodermal appendages such as hair, glands and teeth. The non-synonymous single nucleotide variant (SNV) (rs3827760) in EDAR has been shown to cause straighter, thicker hair fibres by increasing the signalling potency of EDAR, which ultimately leads to an increase in NF-κB activation. In Europeans, variants have also been identified in the first intron of EDAR that are associated with a decrease in beard thickness, highlighting the need to develop our understanding of the regulatory basis behind EDAR expression and its variation. PRSS53 is predicted to encode a serine protease and the variant associated with straight hair causes a glutamine to arginine substitution at position 30 (Q30R) of the protein. The derived allele has a frequency of 76% in the East Asian population, suggesting that it has undergone or is undergoing positive selection in this population. Another variant within PRSS53 (rs201075024), which causes a glycine to serine substitution at position 34 (G34S), also shows signs of positive selection and has a frequency of 54% in the South Asian population. This work investigates another nonsynonymous SNV (rs146567337) within EDAR which is present in Southeast Asian populations, and shows that this variant also leads to an increase in NF-κB activation, to a similar extent as that induced by the well-studied rs3827760. Through the generation of a Prss53 null mouse model, which exhibited a wavy coat and curly whiskers; the generation and phenotypic analysis of the hair and skin of Q30R and G34S mouse models; and cell-line based experiments testing the molecular effects of these derived variants, the work presented in this thesis proposes that hair shape is the driving force behind the selection of the variants within PRSS53 and EDAR. The characterisation of these variants will further develop our understanding of hair variation between human populations and thus, human evolution. Finally, this work identifies a potential model to study the regulation of EDAR expression using human induced pluripotent stem cells by differentiating them along an ectodermal lineage.
UniSAFE: University West – institutional policy to address gender-based violence
Creators: name: Andreska, Zuzana
name: Huck, Averil
name: Linkova, Marcela
Publisher: name: Zenodo
Year: 2022
Subjects: Gender based-violence
policy framework
gender+
institutional policy

description: UniSAFE has mapped the policies and measures to address and combat GBV in 48 universities and research organisations in 15 European countries. For each institution, the team created Vignettes which present national context, institutional policy, training, role in knowledge production, content of the policy, institutional procedure and implementation of the policy.
Understanding weak values without new probability theory
Creators: name: Mochizuki, Riuji
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The physical meaning of weak values and measurements can be completely understood with Born rule and the general probability theory. It is known that the weak value of an observable $\hat A$ with post-selection $\langle F|$ may be out of the eigenvalue range of $\hat A$. This is because the weak value of $\hat A$ with the post-selection is, in general, not the expectation value of $\hat A$, but the expectation value of $\hat A| F\rangle\langle F|$ boosted by the post-selection.
Butcher series: A story of rooted trees and numerical methods for evolution equations
Creators: name: McLachlan, Robert I
name: Modin, Klas
name: Munthe-Kaas, Hans
name: Verdier, Olivier
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65-03, 01-08, 65L06

description: Butcher series appear when Runge-Kutta methods for ordinary differential equations are expanded in power series of the step size parameter. Each term in a Butcher series consists of a weighted elementary differential, and the set of all such differentials is isomorphic to the set of rooted trees, as noted by Cayley in the mid 19th century. A century later Butcher discovered that rooted trees can also be used to obtain the order conditions of Runge-Kutta methods, and he found a natural group structure, today known as the Butcher group. It is now known that many numerical methods also can be expanded in Butcher series; these are called B-series methods. A long-standing problem has been to characterize, in terms of qualitative features, all B-series methods. Here we tell the story of Butcher series, stretching from the early work of Cayley, to modern developments and connections to abstract algebra, and finally to the resolution of the characterization problem. This resolution introduces geometric tools and perspectives to an area traditionally explored using analysis and combinatorics.
description: 16 pages, intended for a general mathematical audience
An Overview of Developments in Foil-Based Back-Contact Modules
Creators: name: Bennett, I.J.
name: Bende, E.E.
name: Goris, M.J.A.A.
name: Eerenstein, W.
Publisher: name: WIP
Year: 2014
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
Novel Materials and Concepts for Modules

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 5-8
description: Back-contact modules made using a conductive back-sheet foil have a number of advantages over
conventional H-pattern modules including a higher power output, compatibility with very thin cells and efficient and
high yield manufacturing. In this paper, we present the results of efficiency and material optimisation for cost
reduction when using metal-wrap-through (MWT) cells. This includes the use of an aluminium conductive backsheet,
a thinner encapsulant for reduced conductive adhesive consumption and an increased number of vias in the
cell. Experimental and modelling results show that the cell and module performance can be improved at a reduced
module costs (4% lower than current cost of MWT modules) whilst retaining reliability.
Development of a-Si:H/µc-Si:H/µc-Si1-xGex:H Triple Solar Cells with Thin Absorber Layers
Creators: name: Reininghaus, N.
name: Kilper, T.
name: Geißendörfer, S.
name: Kellermann, M.
name: Von Maydell, K.
name: Agert, C.
Publisher: name: WIP
Year: 2013
Subjects: THIN FILM SOLAR CELLS
Silicon-based Thin Film Solar Cells

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 2520-2523
description: On our way to develop a very thin and highly efficient triple-junction thin-film solar cell in a-Si:H/
μc-Si:H/μc-SiGe:H configuration cell samples were prepared and characterized using an industrial relevant 13.56
MHz 0.5 nm/s process on an industrial like 3030 cm² PECVD tool. To increase the light reaching the absorber
layers new p-type silicon oxide layers were tested. By incorporating intermediate reflectors made of n-type silicon
oxide between top and middle cell, top cell thickness could be reduced by 30%. Comparing our best triple-junction
solar cell in a-Si:H/μc-Si:H/μc-Si:H configuration with our best triple-junction in a-Si:H/μc-Si:H/μc-SiGe:H
configuration, we could achieve a higher short-circuit current density with only 56% of the total cell thickness. By
realizing a total absorber thickness less than 2 μm for high efficiency cell concepts in triple technology, our intention
is to develop an industrial relevant process with attractive fabrication times by benefiting from the enhanced
absorption of μc-SiGe:H compared to μc-Si:H.
Practical Considerations in Quantitative Dark and Illuminated Lock-in Thermography Analyses of Shunts in Silicon Thin-Film Modules
Creators: name: Friedrich, F.
name: Mack, K.
name: Krishnan, N.
name: Kühnapfel, S.
name: Stannowski, B.
name: Schultz, C.
name: Schlatmann, R.
name: Boit, C.
Publisher: name: WIP
Year: 2013
Subjects: THIN FILM SOLAR CELLS
Silicon-based Thin Film Solar Cells

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 2537-2541
description: In this study, dark and illuminated lock-in thermography (DLIT/ILIT) is applied for the investigation
of state of the art a-Si:H/μc-Si:H tandem modules. The recent progress in LIT technology enables the collection of
spatially highly resolved thermographs that permit a precise location of individual shunts. The possibility of
illumination at two different wavelengths was applied to determine the origin of the shunts. Additionally, quantitative
information can be gained by the investigation of local heating at different working points of the module. For
illuminated lock-in thermography a significant contribution of thermalization and Peltier cooling due to the lateral
current flow was observed, which has to be considered in regard to quantitative analyses.
Spatially Shaped Laser Scribing of Thin Film Photovoltaic Solar Cells Using Flexible Pulsewidth Nanosecond and Picosecond Master Oscillator Fiber Power Amplifier Systems
Creators: name: Baird, B.
name: Gerke, T.
Publisher: name: WIP
Year: 2013
Subjects: THIN FILM SOLAR CELLS
CdTe, CIS and Related Ternary and Quaternary Thin Film Solar Cells

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 2467-2469
description: Innovation in laser processing methods and laser processing system architectures are required to help drive
improvements in thin film photovoltaic (PV) device efficiencies and contribute to reductions of device manufacturing
costs [1,2]. Laser scribes produced by conventional Gaussian beam laser processing using nanosecond lasers of thin film
a-Si and CdTe devices often display sidewall non-uniformities, cracking, residual debris, and heat affected zones. These
undesirable effects often adversely impact device efficiencies, device yield, and ultimately device manufacturing costs.
Recent work has demonstrated that employment of picosecond lasers and shaped beam techniques can provide improved
scribe quality [3, 4. 5]. In this work, we evaluate two shaped beam techniques for P1, P2 and P3 laser scribing of thin
film a-Si and CdTe photovoltaic devices using 1064 nm and 532 nm flexible pulsewidth nanosecond and picosecond
master oscillator fiber power amplifier (MOFPA) laser systems. Improvements in the spatial uniformity of the laser
scribing process offer an attractive approach to meeting the industry’s demands for more robust, efficient, and cost
effective thin film photovoltaic laser processing methods.
Quantitative Assessment of TCO Sheet Resistance in Thin-Film Silicon Devices from Electroluminescence Images
Creators: name: Courtois, G.
name: Fuyuki, T.
name: Fuyuki, A.
name: Salomon, A.
name: Roca I Cabarrocas, P.
Publisher: name: WIP
Year: 2013
Subjects: THIN FILM SOLAR CELLS
Silicon-based Thin Film Solar Cells

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 2484-2488
description: Once embedded in a thin-film module, the properties of the transparent conductive oxide (TCO) layer
constituting the front electrode are uneasy to assess. We propose a method based on electroluminescence (EL)
imaging which allows determining the sheet resistance (R) of this layer. For that purpose, we exploited EL intensity
profiles across the device. From the experimental data, characteristic decay lengths (EL) of the logarithm of the EL
intensity were extracted. On the other hand, assuming the elementary diodes constituting each cell were connected
one to each other via the R of the front TCO, we could derive an analytical expression for the decay of the junction
voltage across the cells, also exhibiting a characteristic decay length (V). Considering an exponential dependence of
the EL intensity with respect to the local junction voltage, decay lengths were identified, thus providing an estimation
of R, which proved to be twice greater than before the deposition process. As a perspective, the relevancy of
applying this method to silicon heterojunction (SHJ) solar cells will be discussed.
Increased CA 19-9 level in patients without malignant disease
Creators: name: Kim, Hye-Ryoun
name: Lee, Chang-Hyun
name: Kim, Young Whan
name: Han, Sung Koo
name: Shim, Young-Soo
name: Yim, Jae-Joon
Publisher: name: Kooperation de Gruyter
Year: 2009

description: Background: The measurement of carbohydrate antigen 19-9 (CA 19-9) is recommended for the diagnosis and follow-up of pancreatic cancer. However, increased CA 19-9 has also been reported in patients with various benign diseases of the lung. We aimed to elucidate the pulmonary radiographic abnormalities and laboratory results associated with increased concentrations of CA 19-9. Methods: This study was performed using a case-controlled design. Cases included all participants in a cancer screening program who had an increased CA 19-9 concentration (>37 U/mL), but without a diagnosis of malignancy. Age- and sex-matched participants with normal CA 19-9 levels were enrolled as controls. Laboratory results and radiographic features were compared. Results: In total, 119 participants with increased CA 19-9 concentrations and 476 controls were included. A higher erythrocyte sedimentation rate (ESR) [adjusted odd ratio (aOR), 1.03; 95% confidence interval (CI), 1.01–1.05], higher hemoglobin A1c (HbA1c) (aOR, 1.28; 95% CI, 1.05–1.56), bronchiectasis (aOR, 2.48; 95% CI, 1.22–5.02), bronchiolitis (aOR, 3.93; 95% CI, 1.88–8.22), emphysema (aOR, 2.67; 95% CI, 1.32–5.40), and interstitial fibrosis (aOR, 10.62; 95% CI, 2.03–55.44) were independent factors for increased CA 19-9. Conclusions: CA 19-9 concentrations, as well as increased ESR and HbA1c, can be increased in patients with various lung abnormalities. Clin Chem Lab Med 2009;47:750–4.
Diffusion Phenomena during Multi-Stage Co-Evaporation Processes of CIGS Solar Cells
Creators: name: Klinkert, T.
name: Jubault, M.
name: Donsanti, F.
name: Lincot, D.
name: Guillemoles, J.F.
Publisher: name: WIP
Year: 2013
Subjects: THIN FILM SOLAR CELLS
CdTe, CIS and Related Ternary and Quaternary Thin Film Solar Cells

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 2453-2454
description: In this work, we describe diffusion phenomena in CIGS thin films designed for solar cell fabrication. It is widely
believed that the control of the Ga grading is crucial for the optimization of the solar cell performance. In order to
understand and further improve our co-evaporation process, which led to efficiencies up to 16.7 % (without antireflection
coating), we aim to a better comprehension of the different diffusion mechanisms.
We conduct a break off experiment in which we interrupt our process (with and without Ga) after the 1st stage and
deposit a Cu, Se layer at a relatively low temperature on top. Afterwards, annealings at different temperatures are
performed. The in-depth atomic concentration profiles of the precursors and annealed samples are measured by
GDOED. An increased Cu-In interdiffusion is found with increasing temperature. Furthermore the Cu-In diffusion is
found to be preferential to the Cu-Ga interdiffusion. This is explained by a copper vacancy mediated interdiffusion
with different activation energies for InCu and GaCu migration, as proposed in the literature.