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IEEE Conference Photovoltaic Specialists (PVSC)
2017 IEEE 44th Photovoltaic Specialist Conference (PVSC)
25-30 June 2017
Showing 1-25 of 851
Proceedings
The proceedings of this conference will be available for purchase through Curran Associates.
Photovoltaic Specialist Conference (PVSC), 2017 IEEE 44th
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MBE growth of 1.7eV Al0.2Ga0.8As and 1.42eV GaAs solar cells on Si using dislocations filters: an alternative pathway toward III-V/ Si solar cells architectures
Arthur Onno;Mingchu Tang;Mu Wang;Yurii Maidaniuk;Mourad Benamara;Yuriy I. Mazur;Gregory J. Salamo;Lars Oberbeck;Jiang Wu;Huiyun Liu
Publication Year: 2017,Page(s):3370 - 3375
Cited by: Papers (1)
Metamorphic epitaxial growth of III-V solar cells on Si has attracted significant interest for the development of III-V/Si photovoltaic architectures. In this work, we present an alternative pathway - using MBE growth techniques - based on the direct nucleation of AlxGa1-xAs materials on Si, followed by the growth of a 1.7eV Al0.2Ga0.8As or a 1.42eV GaAs solar cell. Dislocation Filter Layers (DFLs...Show More
III- V/Si Tandem Cells Utilizing Interdigitated Back Contact Si Cells and Varying Terminal Configurations
Manuel Schnabel;Michael Rienacker;Agnes Merkle;Talysa R. Klein;Nikhil Jain;Stephanie Essig;Henning Schulte-Huxel;Emily Warren;Maikel F.A.M. van Hest;John Geisz;Jan Schmidt;Rolf Brendel;Robby Peibst;Paul Stradins;Adele Tamboli
Publication Year: 2017,Page(s):3371 - 3375
Cited by: Papers (7)
Integrating wide-bandgap III-V with Si solar cells has been shown to yield higher efficiencies than Si alone: As also presented at this conference, four-terminal efficiencies exceeding 32% have been attained. In this contribution, independent and electrically connected operation of the subcells in such tandem cells is examined. The optics of the tandem cell change significantly if a conducting int...Show More
III- V/Si Tandem Cells Utilizing Interdigitated Back Contact Si Cells and Varying Terminal Configurations
Manuel Schnabel;Michael Rienacker;Agnes Merkle;Talysa R. Klein;Nikhil Jain;Stephanie Essig;Henning Schulte-Huxel;Emily Warren;Maikel F.A.M. van Hest;John Geisz;Jan Schmidt;Rolf Brendel;Robby Peibst;Paul Stradins;Adele Tamboli
Characterizing the Impact of Solar Spectral Irradiance on PV Module Output
Publication Year: 2017,Page(s):1 - 3
Cited by: Papers (2)
The energy delivery of PV devices for a specific location is determined by the interaction of the electrical performance of the PV device and the site specific environmental and meteorological conditions. The spectral response curve of a PV device is a determining factor for its energy yield performance with regard to spectral effects. For a given spectral irradiance distribution the generated pho...Show More
Cause of Current-Collection Failure Observed in $I_{\text{sc}}$ -Reduction Phase of PV Cells and Modules Exposed to Acetic Acid
Tadanori Tanahashi;Norihiko Sakamoto;Hajime Shibata;Atsushi Masuda
Publication Year: 2017,Page(s):1268 - 1270
The mechanism of current-collection failure resulting from corrosion of front electrodes is investigated by AC impedance measurement of PV cells and modules degraded by acetic acid. In addition to our previous findings which first incidence of power-loss (with fill factor reduction) is caused by the gap-formation underneath front electrodes, we suggest in this study that the following power-loss w...Show More
Marrying Quality Assurance with Design Engineering – A Winning Partnership! But, a Cultural Divide?
Sarah Kurtz;Govind Ramu;Robert Cornell;Sumanth Lokanath;Edward Hsi;Tony Sample;Masaaki Yamamichi;George Kelly;Ted Spooner;Jonathan Previtali;John Wohlgemuth
Publication Year: 2017,Page(s):1275 - 1279
Investors would like to be confident that a PV plant will work as promised before investing large sums of money. Data showing that PV modules can withstand thousands of hours of accelerated testing are a comfort, but are not sufficient to characterize the economic useful life (EUL) of the whole PV system. An inability to be confident of every aspect of the system can motivate less favorable contra...Show More
Analytical Method for Predicting Spacecraft Power Generation on Partially Shaded Solar Panels
Publication Year: 2017,Page(s):1 - 6
Cited by: Papers (1)
Telecommunication satellites in Earth geostationary orbit (GEO) often have large communication antennas and other external appendages. Throughout the 24-hour day in GEO orbit, and depending on the orbit seasons, the external appendages may cast various changing shadows onto the satellite's solar arrays. The geometry and composition of the external appendages result in a complex shadowing profile i...Show More
Open Source Tools for High Performance Quasi-Static-Time-Series Simulation Using Parallel Processing
Publication Year: 2017,Page(s):3055 - 3060
Cited by: Papers (19)
Quasi-Static-Time-Series (QSTS) simulation is a valuable tool for evaluating the behavior of power systems through time. By performing daily, yearly and other time-based simulations, it is possible to characterize time-varying power conversion devices such as photovoltaic panels, storage, loads, and capacitors, among others within the power system. However, depending on the time-step resolution an...Show More
An autocorrelation-based copula model for producing realistic clear-sky index and photovoltaic power generation time-series
Publication Year: 2017,Page(s):3067 - 3072
Cited by: Papers (9)
This study presents a method for using copulas to model the temporal variability of the clear-sky index. The method utilizes the autocorrelation function and correlated outputs for N time-steps are obtained. Results from the copula model are, in terms of distribution, autocorrelation, step changes and mean daily distribution, compared with the original data set and with an uncorrelated model based...Show More
Metallized Boron-Doped Black Silicon Emitters For Front Contact Solar Cells
Guillaume von Gastrow;Hele Savin;Eric Calle;Pablo Ortega;Ramón Alcubilla;Andreana Daniil;Elias Z. Stutz;Anna Fontcuberta i Morral;Sebastian Husein;Tara Nietzold;Mariana Bertoni
Publication Year: 2017,Page(s):944 - 947
We study doping and metallization of black silicon (bSi) boron emitters formed by ion implantation or diffusion. We demonstrate that conformal metal layers can be deposited on bSi by electron beam evaporation. Raman spectroscopy shows that high boron concentrations (4·1019 cm-3) are obtained in bSi by ion implantation, while maintaining emitter saturation current (J0e) below 20 fA/cm2 with Al2O3 p...Show More
Towards Monolithically Integrated GaAs on Si Tandem Solar Cell
Zhen Liu;Zekun Ren;Haohui Liu;Tonio Buonassisi;Ian Marius Peters
Publication Year: 2017,Page(s):2532 - 2535
GaAs and Si solar cells are the technologies that achieve the highest single-junction efficiencies. Due to the nonideal bandgap combination, incorporating those two materials into a monolithic integrated tandem is, however, not straightforward. In this paper, we discuss the potential of GaAs/GaAs/Si triple-junction architecture. As the reachable short-circuit current in a GaAs solar cell is about ...Show More
High Efficiency Anti-Reflective Coating for PV Module Glass
Brennen M. Freiburger;Corey S. Thompson;Robert A. Fleming;Douglas Hutchings;Sergiu C. Pop
Publication Year: 2017,Page(s):1869 - 1872
Cited by: Papers (4)
Without antireflective coating, more than 4% of incident light is reflected from the standard front cover glass of photovoltaic (PV) modules. Module efficiency is one of the largest levers to impact the cost-per-watt of solar and recovering some of this reflected light with a simple anti-reflective coating (ARC) has become widespread. The types of ARC can vary in deposition method (roll coating, s...Show More
Investigation of Efficiency for PID-Affected Solar Module at Nonstandard Test Conditions
Shuwen Guo;Pan Zhao;Weijing Huang;Jipeng Chang;He Wang;Hong Yang;Chengfeng Su;Bojie Su;Xue Zhang;Yunxue Cao;Hui Zhao
Publication Year: 2017,Page(s):1873 - 1876
Cited by: Papers (4)
Potential-induced degradation (PID) causes a sharp decrease in the efficiency and shunt resistance of the solar module. In this paper, PID-affected modules were studied detailedly under non-standard light conditions for the first time. The trend of efficiency degradation was obtained by measuring irradiance-efficiency ƞ and the ΔI-Δƞ. The result shows that the efficiency (I-ƞ) of PID-affected modu...Show More
ZnSiP2 Thin Film Growth for Si-Based Tandem Photovoltaics
Aaron D. Martinez;Elisa M. Miller;Andrew G. Norman;Paul Stradins;Eric S. Toberer;Adele C. Tamboli
Publication Year: 2017,Page(s):2536 - 2537
ZnSiP2 is a ternary III - V analog with 0.5% lattice mismatch with Si and a 2.1 eV band gap, in the appropriate range for a top cell on a Si-based tandem device. We have previously shown that ZnSiP2 has many properties suitable for applications to Si-based tandem photovoltaics using bulk single crystals grown in a Zn flux. The favorable results obtained from characterization of bulk material encou...Show More
Large-Area Junction Damage in Potential-Induced Degradation of c-Si Solar Modules
Chuanxiao Xiao;Chun-Sheng Jiang;Steve Johnston;Steve P. Harvey;Peter Hacke;Brian Gorman;Mowafak Al-Jassim
Publication Year: 2017,Page(s):1371 - 1375
We report a large area of millimeter-scale p-n junction damage caused by potential-induced degradation (PID) of lab-stressed crystalline-Si modules. Kelvin probe force microscopy results show electrical potential change across the junction, and a recovery was observed after heat treatment. Electron-beam induced current results support the large-area damage instead of local shunts and a much lower ...Show More
Growth of Mos2 Thin Films with Microdome Texture as Omnidirectional Light Trap for Solar Cell Applications
Publication Year: 2017,Page(s):2324 - 2329
Cited by: Papers (3)
Antireflection by microdome texture on MoS2 thin films is reported. MoS2 films with uniformly distributed microdomes were grown by atmospheric pressure chemical vapor deposition, with structure and composition confirmed by Raman, x-ray diffraction, and energy dispersive x-ray analysis. The morphology and distribution of the domes were investigated by scanning electron microscopy. Finite difference...Show More
Femtosecond vs Nanosecond: An Analysis on the Laser Ablation Properties of Dielectric Layers for Solar Cells
Jaffar Moideen Yacob Ali;Vinodh Shanmugam;Carlos D. Rodríguez-Gallegos;Bianca Lim;Armin Aberle;Thomas Mueller
Publication Year: 2017,Page(s):2318 - 2323
Cited by: Papers (1)
This paper reports on the ablation and microstructuring properties of dielectric layers using a high average power femtosecond and nanosecond laser sources. The dielectrics investigated include SiNX, AlOX/SiNX stack and thermal SiO2/SiNX stack deposited on planar n-type silicon wafer. Initially, single pulse ablation properties such as threshold fluence and energy penetration depth were determined...Show More
Cost Competitive Concentrator Photovoltaics for Solar Thermal Applications
Brian C. Riggs;Richard E. Biedenharn;Chris Dougher;Yaping Vera Ji;Qi Xu;Vince Romanin;Daniel S. Codd;James M. Zahler;Matthew D. Escarra
Publication Year: 2017,Page(s):3245 - 3249
Concentrator photovoltaic (CPV) systems have been unable to keep up with the plummeting cost of flat plate PV for large scale power generation. New markets must be explored in order to maintain a robust CPV industry. Solar thermal offers a large potential market but has issues competing with conventional, cheap fuels such as natural gas. Hybrid CPV/T systems are capable of producing heat at prices...Show More
Reducing UV induced degradation losses of solar modules with c-Si solar cells featuring dielectric passivation layers
Robert Witteck;Henning Schulte-Huxel;Boris Veith-Wolf;Malte Ruben Vogt;Fabian Kiefer;Marc Kontges;Robby Peibst;Rolf Brendel
Publication Year: 2017,Page(s):1366 - 1370
Cited by: Papers (6)
We report on the effect of UJV irradiation on solar modules featuring crystalline silicon solar cells with various types of passivation layers and encapsulation polymers with varying UJV transparency. Our results reveal that solar modules featuring cells with an aluminum oxide/p+-type silicon passivation interface on the illuminated side are stable within 1500 h UJV exposure. Modules featuring bif...Show More
Impact of Space Radiation Environment on Concentrator Photovoltaic Systems
Pilar Espinet-Gonzalez;Tatiana Vinogradova;Michael D. Kelzenberg;Alexander Messer;Emily C. Warmann;Chris Peterson;Nina Vaidya;Ali Naqavi;Jing-Shun Huang;Samuel P. Loke;Don Walker;Colin J. Mann;Sergio Pellegrino;Harry A. Atwater
Publication Year: 2017,Page(s):512 - 516
Cited by: Papers (1)
Concentrator photovoltaic systems can provide supplementary shielding against high energy particles. In this paper we compare the radiation environment that the same solar cell would experience in a flat-plate module versus in a parabolic mirror concentrator system. We have observed that the shielding provided by the concentrator system is remarkable. In order to obtain an accurate prediction of t...Show More
Impact of Space Radiation Environment on Concentrator Photovoltaic Systems
Pilar Espinet-Gonzalez;Tatiana Vinogradova;Michael D. Kelzenberg;Alexander Messer;Emily C. Warmann;Chris Peterson;Nina Vaidya;Ali Naqavi;Jing-Shun Huang;Samuel P. Loke;Don Walker;Colin J. Mann;Sergio Pellegrino;Harry A. Atwater
Extracting the fixed charge density in HfOx films grown on highly-doped p-Si samples
Publication Year: 2017,Page(s):517 - 520
A recently developed, novel method for the extraction of fixed interface charge, Qf, and the surface recombination parameters, Sn0 and Sp0, from the injection-level dependent effective minority carrier lifetime is applied to HfOx passivated highly doped c-Si samples. This contactless technique can, unlike conventional capacitance-voltage measurements, be applied to highly doped surfaces provided t...Show More
Siting a solar power plant requires accurate information on the historic solar resource to determine the ideal location and assure that the project will be financially sound. This paper compares the existing and popular method of using a Typical GHI Year (TGY) as a form of historic solar resource assessment, against the method of Typical Power Year.Show More
Advanced-Architecture High-Efficiency Solar Cells for Low Irradiance Low Temperature (LILT) Applications
Andreea Boca;Jonathan Grandidier;Claiborne McPheeters;Paul Sharps;Philip Chiu;Xing-Quan Liu;James Ermer
Publication Year: 2017,Page(s):2099 - 2103
Cited by: Papers (1)
The scientific community and NASA view the outer solar system as a high-priority destination for space exploration and research. The cost and feasibility of future missions to 5-10 AU and beyond would greatly benefit from the availability of high-efficiency solar arrays optimized for low-irradiance low-temperature (LILT) environments. We have therefore set out to develop an advanced-architecture s...Show More
Large Area Multijunction III-V Space Solar Cells Over 31% Efficiency
X.Q. Liu;C. Fetzer;P. Chiu;M. Haddad;X. Zhang;R. Cravens;D. Law;J. Ermer;J. Krogen;S. Sharma;J. Hanley
Publication Year: 2017,Page(s):2094 - 2098
Cited by: Papers (3)
This paper explores development and progress for large area III/N multijunction space solar cells with efficiencies at or above 31 %. XTJ Prime SuperCells with area over 70 cm2, average 30.7% AMO efficiency with a maximum of 31.9%. Post radiation testing indicates an EOL efficiency of 26.7% for 1e15 1 MeVe-/cm2fluences after ECSS annealing. Upright Metamorphic triple junction (UMM3J) devices were ...Show More
Progress towards double-junction InGaN solar cell
Ehsan Vadiee;Evan A. Clinton;Heather McFavilen;Alec M. Fischer;Yi Fang;Joshua J. Williams;Christiana B. Honsberg;William A. Doolittle;Stephen M. Goodnick
Publication Year: 2017,Page(s):305 - 308
In this work we study the carrier population dynamics in an AlGaAs p-i-n single junction solar cell with 10 layers of InAs quantum dots (QDs) in the i-region. Light management and band engineering technics were used to optimize intermediate band solar cells (IBSCs) operation. The IBSC operations are investigated through quantitative luminescence based characterization methods based on photolumines...Show More
Broadband Ta2O5 moth-eye antireflection coatings for tandem solar cells on Si
Bo Yuan;Brian Thibeault;David Payne;James Mutitu;Ivan Perez-Wurfl;Kevin Dobson;Brianna Conrad;Allen Barnett;Robert L. Opila
Publication Year: 2017,Page(s):315 - 318
Cited by: Papers (1)
Wafer-scale Ta2O5 moth-eye antireflection coatings are directly patterned on dual junction GaAsP/SiGe solar cells on Si substrates using deep UV photolithography and plasma etching. These sub-wavelength structures have an aspect ratio of 1.2, which results in excellent antireflection properties with an average reflectance of 7% over the entire 400-1100nm. Further optimizations of moth-eye and trad...Show More
Proceedings
The proceedings of this conference will be available for purchase through Curran Associates.
Photovoltaic Specialist Conference (PVSC), 2017 IEEE 44th
- Print on DemandPurchase at Partner
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