Technical Program

Solar power integration advances

Jan Kleissl. University of California, San Diego

The Overlooked Potential of III-V Tandem Photovoltaics and How To Make It Work

Frank Dimroth. Fraunhofer Institute for Solar Energy Systems ISE

Reliability Of Solar Pv Modules: Past Achievements And Modern Challenges

Alessandro Virtuani. CSEM

Controlling Thermal Radiation for Energy Conversion: From Thermophotovoltaics to Thermoradiative Devices

Jeremy Munday. University of California, Davis, CA, USA

Scalable Nanogap Fabrication and Non-Destructive Metrology for Near-Field Thermophotovoltaic Devices

Yuting Li, Yeonghoon Jin, Debarati Sen, Titilope Dada, Eric Tervo. University of Wisconsina, Madison, WI, USA

Hybrid Thermodynamics for Solar Energy and Implications for Solar Cell Efficiency Exceeding the Single Junction Limit for Silicon Solar Cells

Christiana Honsberg¹, Stuart Bowden², Ian Sellers³, Stephen Goodnick¹, Justin W. Faris¹. ¹Arizona State University, Tempe, AZ, USA.²Solestial Solar, Tempe, AZ, USA.³University at Buffalo, Buffalo, NY, USA

Tunable Organic Photovoltaic Module Platform for Photoelectrochemical Fuel Production

Luke McClintock, Zebulon Schichtl, Reilly Seban, Bryon Larson, Emily Warren. National Laboratory of the Rockies, Golden, CO, USA

Excess Defects: How Illumination Affects the Thermodynamic Stability of Charged Point Defects

Michael A. Scarpulla, Mike Kirby, Isaac D. Thomas, Jack Halbersleben. University of Utah, Salt Lake City, UT, USA

MOVPE Growth and Spalling of III-V solar cells on GaAs(211)

Myles A Steiner¹, Nicholas Yoo^{1, 2}, Sarah Collins¹, Theresa Saenz¹, Tadeas Hanus¹, John Goldsmith¹, Anica Neumann¹, Jacob Cordell¹, Michelle Young¹, Shaniah Greene¹, Corinne Packard^{2, 3}, William McMahon¹. ¹National Laboratory of the Rockies, Golden, CO, USA.²Colorado School of Mines, Golden, CO, USA.³University of Southern California, Los Angeles, CA, USA

Advances in Engineered Ge Substrates for Multijunction Solar Cell Manufacturing

Alexandre Chapotot¹, Rajiv Sharma¹, Priyanka Proost¹, Robin Vanuytven¹, Aitana Cano², RubAcn FortAsn², IvAin GarcAsa², Daniel F. Reyes³, Veronica Braza³, Kristof Dessein¹, Jinyoun Cho¹. ¹Umicore Electro-Optic Materials, Olen, Belgium.²Instituto de EnergAsa Solar, E.T.S.I TelecomunicaciA³n, Universidad PolitAccnica de Madrid, Madrid, Spain.³Instituto de MicroscopAsa ElectrA³nica y Materiales (IMEYMAT), Cadiz, Spain

Al-Containing Hydride Vapor Phase Epitaxy for Scalable III-V Solar Cell Production

Ryuji Oshima¹, Takeshi Nishida¹, Akinori Ubukata², Hiroki Tokunaga², Takeyoshi Sugaya¹. ¹National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan.²Taiyo Nippon Sanso Corporation, Tsukuba, Japan

Best Student Presentation Award Finalist - MOVPE Growth of AlxGa1-xAs with Deposition Rates up to 55 μm/h for III-V Multi-Junction Solar Cells

Christoph Klein, Robin Lang, Jens Ohlmann, Jonas Schoen, Frank Dimroth, David Lackner. Fraunhofer Institute for Solar Energy Systems ISE, Freiburg, Germany

Best Student Presentation Award Finalist - Investigating Porous Silicon Buffer Layers as Compliant Layers for Cost-Effective Ge-on-Si Substrates in III-V Solar Cells

Ella S. Supik^{1, 2}, Stefanie Lawundy^{1, 2}, Chia-Sheng Liu², Charlotte Weiss², Stefan Janz², Andreas W. Bett^{1, 2}. ¹University Freiburg, Freiburg, Germany.²Fraunhofer Institute for Solar Energy Systems, Freiburg, Germany

Prototyping and Testing of a Building-Integrated Solar Electric–Thermal Cogeneration System

Siddharth Padmanabha¹, Ying Stock-Bordnick¹, Aaron Luo¹, Qifei Wang¹, Chris Lewis¹, Rhegan Barrett¹, Gracie Dunaway¹, Luke Farnan¹, Jason Mueller¹, Matthew Graf¹, Anna Walker¹, Miriam Lerner¹, Conor Farnan¹, Corey Hart¹, Daniel Codd², Matthew Escarra¹. ¹Tulane University, New Orleans, LA, USA.²University of San Diego, San Diego, CA, USA

Benchmarking Performance of Wafer-Scale Perovskite/Si Tandems: Methods, Challenges, and Recommendations

Tao Song, Jeremy Brewer, John F. Geisz, Idris Davis, Rafell Williams, Nikos Kopidakis. National Laboratory of the Rockies, Golden, CO, USA

Developing a Stress Testing Protocol for >1 Year of Outdoor Operation for Metal Halide Perovskite PV Modules

Michael Owen-Bellini¹, Tianran Liu¹, Jackson Schall¹, Joshua Parker¹, Jimmy Newkirk¹, Kent Terwilliger¹, Nicholas Irvin¹, Dana Kern¹, Ingrid Repins¹, Timothy J Silverman¹, Joseph Berry¹, Joshua Stein², Laura T Schelhas¹. ¹National Laboratory of the Rockies, Golden, CO, USA.²Sandia National Laboratories, Alburquerque, NM, USA

Best Student Presentation Award Finalist - Understanding the thermomechanical properties of polyolefin encapsulants for reliable perovskite solar module packaging

Marco Casareto¹, Nick Bosco², Laura Schelhas², Michael Owen-Bellini², Nicholas Rolston¹. ¹Arizona State University, Tempe, AZ, USA.²National Laboratory of the Rockies, Golden, CO, USA

Best Student Presentation Award Finalist - Probing Strain-induced Ion Migration in 2D Polycrystalline Halide Perovskite Thin Films by In-situ KPFM

Tanzeela Yousaf¹, Jonghon Han², Jincheol Kim², Jan Seidel¹. ¹University of New South Wales, Sydney, Australia, Sydney, Australia.²Macquarie University, Sydney, Australia

Validated optical and electrical modeling for performance evaluation and loss analysis of 2-terminal perovskite-silicon tandem solar cells on industrial scales

Dong Zhang, Rohit Prasanna, Tomas Leijtens. Swift Solar, San Carlos, CA, USA

Toward Accurate Energy Yield Predictions for Perovskite-Based Tandem Photovoltaics

Emily L Warren, Rajiv Daxini, Robert Witteck, William E. McMahon, Axel F. Palmstrom, Kai Zhu, Laura T. Schelhas, Joseph J. Berry. National Laboratory of the Rockies, Golden, CO, USA

Evaluating Error Propagation Across the Photovoltaic Modeling Pipeline Through Blind Modeling

Lelia Deville¹, Kevin S Anderson², Juergen Sutterlueti³, Youri Blom⁴, Mark Campanelli⁵, Alejandro Gonzalez Carballo⁶, Gregorio Olivares Casero⁷, Arijit Chakroborty⁸, Anton Driesse⁹, A S M Jahid Hasan`¹⁰, William B Hobbs¹¹, Adam Ramsus Jensen¹², Sha Li¹³, Andrei da Cunha Lima¹⁵, Ivan Diaz Martinez¹⁴, et al.¹. ¹University of Louisiana at Lafayette, Lafayette, LA, USA.²Sandia National Laboratories, Albuquerque, NM, USA.³Gantner Instruments, Schruns, Austria.⁴Delft University of Technology, Delft, Netherlands.⁵Intelligent Measurement Systems LLC, Bozeman, MT, USA.⁶EDP Renewables, Madrid, Spain.⁷CENER, Navarra, Spain.⁸Atkins Realis, Bengaluru, India.⁹PV Performance Labs, Freiburg, Germany.¹⁰North South University, Dhaka, Bangladesh.¹¹Southern Company, Birmingham, AL, USA.¹²Technical University of Denmark, Kongens Lyngby, Denmark.¹³Leeward Renewable Energy, Dallas, TX, USA.¹⁴European Energy A/S, SAcborg, Denmark.¹⁵Universidade Federal de Santa Maria, Santa Maria, Brazil

A Workflow to Analyze The Impact of Terrain Undulations on Energy Yield for Different Motor Block Sizes

Umay Akkoseoglu¹Mark Mikofski¹, Billy Hayes². ¹DNV Energy Services USA, Oakland, CA, USA.²Array Technologies Inc, Albuquerque, NM, USA

Improved spectral correction for a PV system with CdTe modules

Keith McIntosh¹, Solomon Freer¹, Malcolm Abbott¹, Chris Stelzer², Andrew Loveall², Samuel Vielman². ¹PV Lighthouse, Coledale, Australia.²Kiewit, Lenexa, KS, USA

Fitting Inverter Models to PV System Data

Clifford W Hansen, Kevin S Anderson, Marios Theristis. Sandia National Laboratories, Albuquerque, NM, USA

Is IEC-61853 testing useful for predicting the energy yield of tandem solar cells?

Rajiv Daxini, William E McMahon, Robert Witteck, Emily Warren. National Laboratory of the Rockies, Golden, CO, USA

Building the Photovoltaics Workforce for Terawatt-Scale Deployment

Silvana Ovaitt, Peter Hacke. National Laboratory of the Rockies, Golden, CO, USA

Global overview of current political and regulatory initiatives to accelerate the expansion of photovoltaics in regions where grid constraints and market conditions limit further growth

Arnulf Jaeger-Waldau¹, Giovanna Adinolfi², Ameni Boumaiza³, Jamie M. Bright⁴, Christof Bucher⁵, Hubert Fechner⁶, Sara Freitas⁷, Giorgio Graditi², Ricardo Guerrero-Lemus ⁸, Bert Herteleer⁹, Vincent Krakowski¹⁰, Denis Mede¹¹, Richard Perez¹², Daniel VAizquez Pombo¹³, Angele Reinders¹⁴, Niclas Rhein¹⁵. ¹European Commission, Joint Research Centre, Ispra, Italy.²Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy.³Qatar Environment and Energy Research Institute, Qatar, Qatar.⁴UK Power Networks Distribution System Operator, London, United Kingdom.⁵Bern University of Applied Science, Bern, Switzerland.⁶Austrian PV Technology Platform, Vienna, Austria.⁷AssociaAsApo Portuguesa de Energias RenovAiveis, Lisboa, Portugal.⁸Universidad de La Laguna, San CristA³bal de La Laguna, Spain.⁹Scuola Universitaria Professionale della Svizzera Italiana, Lugano, Switzerland.¹⁰Hespul, Lyon, France.¹¹Fraunhofer IEE, Kassel, Germany.¹²Atmospheric Sciences Research Center, SUNY at Albany, Albany, NY, USA.¹³Electric Power Research Institute, Dublin, Ireland.¹⁴Eindhoven University of Technology, Eindhoven, Netherlands.¹⁵Energynautics GmbH, Darmstadt, Germany

Paradigm shifts for sustainable scalable photovoltaics

Lukas Wagner^{1, 2}, Ian Marius Peters³, Annick Anctil⁴, Matthew Davies^{5, 6}, Jiska de Groot⁷, Li Wang⁸, Henning Helmers⁹, Robert Pietzcker¹⁰Jan Christoph Goldschmidt^{1, 2}. ¹Physics of Solar Energy Conversion, Department of Physics, Marburg University, Marburg, Germany.²mar.quest Marburg Center for Quantum Materials and Sustainable Technology, Marburg University, Marburg, Germany.³Helmholtz Institute Erlangen-NA¼rnberg for Renewable Energy, Forschungszentrum JA¼lich, Erlangen, Germany.⁴Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI, USA.⁵SPECIFIC IKC, Faculty of Science and Engineering, Swansea University, Swansea, United Kingdom.⁶School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa.⁷African Climate and Development Initiative, University of Cape Town, Rondebosch, South Africa.⁸School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, Australia.⁹Fraunhofer Institute for Solar Energy Systems ISE, Freiburg, Germany.¹⁰Potsdam Institute for Climate Impact Research, Potsdam, Germany

Improving Utility Visibility of Behind-the-Meter PV and Battery Storage Using Net Load

Upama Nakarmi, Marc Perez, Philip Gruenhagen. Clean Power Research L.L.C., Napa, CA, USA

Best Student Presentation Award Finalist - EV Charging Infrastructure with Solar Integration: Utility Load Impacts and Planning Implications Sneha Shanmuganathan, Bhavya Sree Boya Nayakula, Justin, Steve Goodnick, Christiana Honsberg Arizona State University, 1151

Sneha Shanmuganathan¹, Bhavya Sree Boya Nayakula¹, Justin ¹, Steve Goodnick ¹, Christiana Honsberg ¹. ¹Arizona State University, Tempe, AZ, USA.²Arizona State University, Tempe, AZ, USA.³Arizona State University, Tempe, AZ, USA.⁴Arizona State University, Tempe, AZ, USA.⁵Arizona State University, Tempe, AZ, USA

Best Student Presentation Award Finalist - Multi-Resonant Light Trapping in Ultrathin Cu(In, Ga)Se2 Solar Cells: From Concept to Design Rules

Merve Demir¹, Daniel Jimenez¹, Bodo Fuhrmann², Matthias Maiberg¹, Marcel Schrader¹, Paul Rondt¹, Heiko Kempa¹, Alexander Sprafke^{1, 2}, Roland Scheer¹. ¹Institute of Physics, Martin Luther University Halle Wittenberg, Halle (Saale), Germany.²Interdisciplinary Center of Materials Science, Martin Luther University Halle Wittenberg, Halle (Saale), Germany

Best Student Presentation Award Finalist - The Native Oxide Growth on Polycrystalline CdSeTe/CdTe Surface and Its Impact on Device Performance

Sushmakanth Myneni, Mayank Mate, Amit Munshi, Walajabad Sampath. Colorado State University, Fort Collins, CO, USA

Oxide Formation on CdTe and MgxCd1–xTe as a Back Surface Passivation Material

Noah Kamm¹, Xiaoyang Liu², Zheng Ju², Xin Qi², Yong-Hang Zhang², Anthony Nicholson³, Amit Munshi³, D. Bruce Busshholz⁴, Arashdeep Thind¹, Robert Klie¹. ¹Department of Physics, University of Illinois in Chicago, Chicago, IL, USA.²Department of Electrical Engineering, Arizona State University, Tempe, AZ, USA.³Department of Mechanical Engineering, Colorado State University, Fort Collins, CO, USA.⁴Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA

Best Student Presentation Award Finalist - Zn-Alloyed SnO2 Buffer Layers for Thin Film CdSeTe/CdTe Solar Cells

Zeyad Elsayed¹, Samuel E. Machin¹, Ana Jurado-Estrada¹, Luis C. Infante-Ortega¹, Mustafa Togay¹, Luksa Kujovic¹, Sam Davis¹, Zhaoxia Zhou¹, Stuart Robertson¹, Jake W. Bowers¹, John M. Walls¹, Pascal Jundt², Bettina Spaeth², Christian Drost², Robert Arndt². ¹Centre for Renewable Energy Systems Technology (CREST), Loughborough University, Loughborough, United Kingdom.²CTF Solar GmbH, Dresden, Germany

Sprayed NiOx as a Hole Transport Material in CdSe-Based Solar Cells with Superstrate and Substrate Configurations

UJJWAL DHAKAL, Sabin Neupane, Manoj Jamarkattel, Kiran Lamichhane, Suresh Chaulagain, Sanjeeb Budhathoki, Hamim Sharif, Arun Basnet, Alisha Adhikari, Prabin Dulal, Joel Blodgett, Nikolas Podraza, Randy Ellingson, Michael Heben, Yanfa Yan. University of Toledo, PVIC, Toledo, OH, USA

Nanoscale Visualization of Charge Carrier Transport and Recombination in Perovskite Photovoltaics

Dane W. deQuilettes. Princeton University, Princeton, NJ, USA

Selenium Diffusion in Uniform CdSexTe1-x Absorbers Using Correlative CL and EBSD

Samuel E. Machin¹, Kieran M. Curson¹, Luksa Kujovic¹, John M. Walls¹, Stuart Robertson², Zhaoxia Zhou², Pascal Jundt³, Bettina Spath³, Christian Drost³, Robert Arndt³. ¹Centre for Renewable Energy Systems Technology (CREST), Loughborough, Leicester, United Kingdom.²Loughborough Materials Characterisation Centre (LMCCC), Loughborough, Leicester, United Kingdom.³CTF Solar GmbH, Dresden, Germany

High Spatial Resolution Mapping of Urbach Energy in Photovoltaic Devices

Jacques D Kenyon, Kieran M Curson, Xiaolei Liu, Aoshi Yang, LukAia KujoviA, Stuart Robertson, Zhaoxia Zhou, Jake W Bowers, John M Walls. Loughborough University, Loughborough, United Kingdom

New Methods for Interpreting Surface Photovoltage Spectra for Contactless Device Characterization

Nathan Rock¹Michael Scarpulla^{1, 2}. ¹University of Utah Dept. of Materials Science and Engineering, Salt Lake City, UT, USA.²University of Utah Dept. of Electrical and Computing Engineering, Salt Lake City, UT, USA

Reducing glass breakage risk in PV systems

Timothy J Silverman², Elizabeth C Palmiotti¹, Michael G Deceglie¹, E Ashley Gaulding¹. ¹National Laboratory of the Rockies, Golden, CO, USA.²Photovoltaic Materials and Devices Group, Delft University of Technology, Delft, Netherlands

A novel optimized hail testing approach for accurate evaluation of PV module durability

Yuanjie Yu¹, Zhichao Song¹, Philippe Gregoire², ruirui Lv¹, Tao Xu¹. ¹No. 199 Lushan Road, Suzhou New District, Suzhou, China.²4273 King St. East, Suite 102, Kitchener, ON, Canada

Using Fractography to Trace Cracks in PV Modules to the Origin

E. Ashley Gaulding¹, Elizabeth C. Palmiotti¹, Timothy J Silverman¹, William B. Hobbs², Michael G. Deceglie¹. ¹National Laboratory of the Rockies, Golden, CO, USA.²Southern Company, Birmingham, AL, USA

Investigation of backsheet cracking in triple-layered photovoltaic backsheet inner layers

Stefan Mitterhofer¹, Zelin Li¹, Song Syun Jhang¹, Yu Wen Ho¹, Ashlee R. Aiello², Karissa L. Jensen², Xiaohong Gu², Michael D. Kempe³, William B. Hobbs⁴, Liang Ji⁵. ¹Associate, National Institute of Standards and Technology, Gaithersburg, MD, USA.²National Institute of Standards and Technology, Gaithersburg, MD, USA.³National Laboratory of the Rockies, Golden, CO, USA.⁴Southern Company, Birmingham, AL, USA.⁵UL Solutions (retired), Northbrook, IL, USA

pvcracks: python repository for electroluminescence image processing, current-voltage curve fitting and power loss estimation

Norman Jost¹, Brandon K. Byford¹, Rodrigo d. Prado Santamaria², Clifford W. Hansen¹, Jennifer L. Braid¹. ¹Sandia National Laboratories, Albuquerque, NM, USA.²Technical University of Denmark, Roskilde, Denmark

MPC-Based Control of Hybrid Battery–Supercapacitor Systems in DC Microgrids Using a Bidirectional SEPIC/Zeta Converter

Jhoan A. Montenegro-Oviedo¹, Jesus D. Vasquez-Plaza², Carlos A. Ramos-Paja³, Fabio Andrade¹. ¹University of Puerto Rico, Mayaguez, PR, USA.²Oak Ridge National Laboratory, Oak Ridge, TN, USA.³Universidad Nacional de Colombia, MedellAsn, Columbia

Voltage-Guided MPPT Curtailment for Active DC-Link Protection of Grid-Forming Inverters During Fault

Arnab Acharya, Raja Ayyanar. Arizona State University, Tempe, AZ, USA

Testing Commercial Non-Export DER Controllers for Low-Voltage Spot Network Interconnections

Nicholas S. Gurule¹, Matthew J. Reno¹, Joseph A. Azzolini¹, Santiago Sena², Chelsea Collette², Ali Bidram³. ¹Sandia National Laboratories, Albuquerque, NM, USA.²Public Service Company of New Mexico, Albuquerque, NM, USA.³University of New Mexico, Albuquerque, NM, USA

Effect of PV Inverter Aggregation on Sandia Frequency Shift Anti-Islanding in Systems with Induction Motor Loads

Jorge A. Leon-Quiroga, Rachid Darbali-Zamora, Michael Ropp. Sandia National Laboratories, Albuquerque, NM, USA

Stabilization of Chaotic Dynamics in Current-Mode DC–DC Boost Converters via Simscape-Based Delayed Feedback Control

Ammar Nimer Natsheh¹, Sohad Abu-Elzait², Bereket Kebede Bedada¹, Yassine Benachour¹. ¹Higher Colleges of Technology, Dubai Academic City, Dubai, United Arab Emirates.²Appalachian State University, Boone, NC, USA

Evaluating snow loss methods – Soiling kit measurements vs models using gridded input data

Josh Peterson, Alex Bryan, Julie Chard. GroundWork Renewables Inc, Sand City, CA, USA

High-resolution ESM projections for energy applications over the CONUS

Jaemo Yang, Manajit Sengupta, Yu Xie, Aron Habte. National Laboratory of the Rockies, Golden, CO, USA

On the Importance of Parallax Effects in Satellite to Irradiance Modeling

Richard Perez^{1, 2}Marc Perez¹, Andrew Foster¹, Jing Huang¹, Maina AndrAc³, RaphAll CAccAc³. ¹Clean Power Research, Bellevue, WA, USA.²SUNY Albany, Albany, NY, USA.³UniversitAc des Antilles, Pointe-An-Pitre, Guadeloupe

Enhancing the Accuracy and Coverage of the National Solar Radiation Data Base

Manait Sengupta¹, Yu Xie¹, Aron Habte¹, Brandon Benton¹, Paul Edwards¹, Jaemo Yang¹, Mike Foster², Andrew Heidinger³, Paul Stackhouse⁴. ¹National Lab of the Rockies, Golden, CO, USA.²University of Wisconsin, Madison, WI, USA.³NOAA, Madison, WI, USA.⁴NASA, Hampton, VA, USA

Integration of GOES data for solar resource assessment of the Contiguous United States

Yu Xie¹, Manajit Sengupta¹, Brandon Benton¹, Aron Habte¹, Jaemo Yang¹, Michael Foster². ¹National Laboratory of the Rockies, Golden, CO, USA.²University of Wisconsin-Madison, Madison, WI, USA

Exploring Uncertainty in Solar Measurements: Insights from NLR's SUNI Application at 89 Stations

Aron Habte¹, Manajit Sengupta¹, Sora Ryu¹, Stephen Wilcox², Thomas Stoffel². ¹National Laboratory of the Rockies, Golden, CO, USA.²Solar Resource Solutions LLC, Louisville, CO, USA

Screening Organic Hole Transport Layer for Solution-Processed Antimony Sulfoselenide Solar Cells

Alisha Adhikari, Joel Blodgett, Abudulai Rabiu, Sanjeeb Budhathoki, Ujjwal DhakalSabin Neupane, Manoj Jamarkattel, Nadeesha Katakumbura, Vijay Karade, Arun Basnet, Kiran Lamichhane, Michael Heben, Randy Ellingson, Zhaoning Song, Yanfa Yan. Wright Center for Photovoltaic Innovation and Commercialization, Department of Physics and Astronomy, Toledo, OH, USA

Decoupling Process Variables in 3-Stage CIGS : Phase and Composition Changes under Time/Pressure/Temperature

Ju Chan Choi, Jin Ho Yang, Jae Ho Yun. iriKorea Institute of Energy Technology (KENTECH), NaJu-si, South Korea

Multi-Resonant Light Trapping in Ultrathin Cu(In, Ga)Se2 Solar Cells: From Concept to Design Rules

Merve Demir¹, Daniel Jimenez¹, Bodo Fuhrmann², Matthias Maiberg¹, Marcel Schrader¹, Paul Rondt¹, Heiko Kempa¹, Alexander Sprafke^{1, 2}, Roland Scheer¹. ¹Institute of Physics, Martin Luther University Halle Wittenberg, Halle (Saale), Germany.²Interdisciplinary Center of Materials Science, Martin Luther University Halle Wittenberg, Halle (Saale), Germany

Progress in Chloride-Based Treatments of CdZnTe Solar Cells

Pradipta Roy Dip^{1, 2}, Kevin D. Dobson¹, Brian E. McCandless¹, William N. Shafarman^{1, 2}. ¹Institute of Energy Conversion, University of Delaware, Newark, DE, USA.²Department of Materials Science and Engineering, University of Delaware, Newark, DE, USA

Residual Strain in Cadmium Telluride Thin Films

Kevin D. Dobson, Arivazhagan Valluvar Oli, Brian E. McCandless, William N. Shafarman. Institute of Energy Conversion, University of Delaware, Newark, DE, USA

Pre-deposition Substrate Cleaning and Plasma Surface Treatment Effects on CdSeTe/CdTe

Robert D. Ellis, Zeyad Elsayed, Luke Jones, Samuel E. Machin, Adam Law, Jacques D Kenyon, Mustafa Togay, John M. Walls, Jake W. Bowers. Loughborough University, Loughborough, United Kingdom

The Role of Surface Recombination Velocity on the Efficiency of CdS/CdTe Thin Film Solar Cell

Hamid Fardi. University of Colorado Denver, Denver, CO, USA

Optimizing Monolithic (Ag, Cu)(In, Ga)Se2/Si Tandem Solar Cells via Bandgap Engineering and Bifacial Operation

Julia Horstmann¹, Tobias Gut¹, Matthias Maiberg¹, Mario Hanser², Jana-Isabelle Polzin², Martin Hermle², Roland Scheer¹. ¹Martin-Luther-UniversitAct Halle-Wittenberg, Halle (Saale), Germany.²Fraunhofer Institute for Solar Energy Systems ISE, Freiburg, Germany

Eutectic Halide Salt Engineering for Arsenic Doped CdTe

Zulkifl Hussain, Adam B. Phillips, Kara B. Kile, Aparajita Dixit, Ali Abdel-Rahman Qatishat, Shawn M. Wolffersdorff, Ebin Bastola, Randy J. Ellingson, Michael J. Heben. The University of Toledo, Toledo, OH, USA

Developing a Phosphorus source for Doping of CdTe

Shahrin Iqbal^{1, 2}, Kevin Dobson¹, Brian McCandless¹, William Shafarman^{1, 2}. ¹Institute of Energy Conversion, University of Delaware, Newark, DE, USA.²Department. of Materials Science and Engineering, University of Delaware, Newark, DE, USA

Oxide Formation on CdTe and MgxCd1–xTe as a Back Surface Passivation Material

Noah Kamm¹, Xiaoyang Liu², Zheng Ju², Xin Qi², Yong-Hang Zhang², Anthony Nicholson³, Amit Munshi³, D. Bruce Busshholz⁴, Arashdeep Thind¹, Robert Klie¹. ¹Department of Physics, University of Illinois in Chicago, Chicago, IL, USA.²Department of Electrical Engineering, Arizona State University, Tempe, AZ, USA.³Department of Mechanical Engineering, Colorado State University, Fort Collins, CO, USA.⁴Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA

High Voltage CdSe Solar Cells with Optimized p-interfaces

Purnendu Kartikay, Payton BillsVikram Dalal. Iowa State University, Ames, IA, USA

First-Principles Study of Arsenic Activation and Selenium Redistribution in CdSeTe/CdTe Solar Cells

Boney Mahesh¹, Ali Abbas¹, Pooja Goddard², Roger Smith², Michael Walls¹. ¹Centre for Renewable Energy Systems Technology (CREST), Wolfson School of Mechanical, Electrical an, Loughborough, United Kingdom.²Department of Chemistry, Loughborough University, Loughborough, United Kingdom

The Ambiguity of Capacitance Derived Carrier Density and a Theoretical Revision of the Depletion Approximation

Mayank Mate, Amit Munshi. Colorado State University, Fort Collins, CO, USA

Single Crystal Growth of Arsenic Doped and Phosphorus Doped Cadmium Selenium Telluride (CdSexTe1-x) to Improve CdTe Thin Film Photovoltaics

Benjamin Montag¹, Darius Kuciauskas², Cody Rietcheck¹, Echo Larson¹. ¹Radiation Detection Technologies, Manhattan, KS, USA.²National Laboratory of the Rockies, Golden, CO, USA

Commercial Production of the Group-V Doped Polycrystalline CdTe Source Material for the Next-Generation Photovoltaics

Benjamin Montag¹, Amit Munshi², Mayank Mate², Magesh Murugesan³, Jing Shang³, John McCloy³, Matthew Reese⁴, Eric Colegrove⁴, Hongling Lott⁴, Robert Morrissey⁴, Joshua Brown⁴, Ed Sartor⁴, Andrea Mathew⁴, Cody Riecheck¹. ¹Radiation Detection Technologies, Inc, Manhattan, KS, USA.²Colorado State University, Ft. Collins, CO, USA.³Washington State University, Pullman, WA, USA.⁴National Laboratory of the Rockies, Golden, CO, USA

Role of Se composition and CdCl2 Treatment on Intrinsic Donor Defects in Polycrystalline CdTe-based PV Devices

Sushmakanth Myneni, Daniel Shaw, Walajabad Sampath. Colorado State University, Fort Collins, CO, USA

The Native Oxide Growth on Polycrystalline CdSeTe/CdTe Surface and Its Impact on Device Performance

Sushmakanth Myneni, Mayank Mate, Amit Munshi, Walajabad Sampath. Colorado State University, Fort Collins, CO, USA

Influence of Cooling Processes on All-sputtered Sub-micrometer Cu(In, Ga)(S, Se)2 Flexible Solar Cells

AntA³nio J. N. Oliveira¹, JoApo B. VilApo^{1, 2}, AndrAc F. Violas¹, Ana R. Pires¹, BAirbara L. Sieira^{1, 2, 3}, Xavier L. Pinheiro^{1, 2, 4}, Ricardo M. Silva¹, InAos Morais², Pedro PatrAscio², Jennifer P. Teixeira¹, Joaquim P. LeitApo^{2, 3}, Paulo A. Fernandes^{1, 5}, Pedro M. P. SalomAc^{1, 2}. ¹International Iberian Nanotechnology Laboratory, Braga, Portugal.²Departamento de FAssica da Universidade de Aveiro, Aveiro, Portugal.³i3N, University of Aveiro, Aveiro, Portugal.⁴CICECO, Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal.⁵CIETI, Departamento de FAssica, Instituto Superior de Engenharia do Porto, Porto, Portugal

Cadmium Telluride Photovoltaic Module Safety: Toxicological Evidence for Residential and End-User Deployment

Aniruddha Savargaonkar¹, Amit H. Munshi^{2, 3}. ¹Colorado State University, School of Biomedical and Chemical Engineering, Fort Collins, CO, USA.²Colorado State University, Department of Mechanical Engineering, Fort Collins, CO, USA.³JPHB Solutions LLC, Loveland, CO, USA

Technology Assessment and modelling of Three Terminal Tandem Solar Cells for in-space Utilization

Alexis J Arroyo¹, Jeremiah D Sims¹. ¹NASA Glenn Research Center, Cleveland, OH, USA.²NASA Glenn Research Center, Cleveland, OH, USA

Metamorphic 1 eV InGaAs/InP superlattice solar cells

Adrian Birge, Yiteng Wang, R. Corey White, Sarah Su-O Youn, Chi Jiang, Bora Kim, Devon O. Lee, Minjoo Larry Lee. University of Illinois Urbana-Champaign, Urbana, IL, USA

High Temperature Characterization of Emitters for Thermophotovoltaics

Titilope M. Dada, Eric J. Tervo. University of Wisconsin-Madison, Madison, WI, USA

Rollable flexible thin silicon heterojunction (SHJ) solar cells for space applications

Zhengxin Liu^{1, 2}, Wenzhu Liu^{1, 2}, Fanying Meng¹, Liping Zhang¹, Wenjie Zhao¹, Qiang Shi¹, Jianhua Shi^{1, 2}, Anjun Han^{1, 2}, Junlin Du^{1, 2}. ¹Shanghai Institute of Microsystem and Information Technology (SIMIT) Chinese Academy of Sciences, Shanghai, China.²6T Solar Co., Ltd., Shanghai, China

Ultra-Thin InGaP Arrays Embedded in Solar Sails for Power Generation and Propulsion

Robert F. McCarthy¹, Ryan Grady¹, David Rowell¹, Tyler Gish¹, Anastasia Soeriyadi¹, Andree Wibowo¹, Joseph Footdale², Roger Welser³, David Wilt⁴, Noren Pan¹. ¹MicroLink Devices, Inc., Niles, IL, USA.²Redwire Space, Longmont, CO, USA.³Consultant, Providence, RI, USA.⁴Consultant, Albuquerque, NM, USA

Al-Containing Hydride Vapor Phase Epitaxy for Scalable III-V Solar Cell Production

Ryuji Oshima¹, Takeshi Nishida¹, Akinori Ubukata², Hiroki Tokunaga², Takeyoshi Sugaya¹. ¹National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan.²Taiyo Nippon Sanso Corporation, Tsukuba, Japan

Temperature and Radiation Response of Quantum Well Enhanced Tandem Solar Cells

Elijah Sacchitella¹, Brandon Durant², Vincent Whiteside², Steve Polly¹, Ian Sellers², Seth Hubbard¹, Alec Jackson³. ¹Rochester Institute of Technology, Rochester, NY, USA.²University at Buffalo, Buffalo, NY, USA.³Air Force Research Lab, Albuquerque, NM, USA

New Cost-Effective Nano-Structuring Technique for Light Management in III-V Thin-Film Photovoltaics

Alessandra Selis¹, Jenny Norberg^{1, 2}, Nicolas Alt^{1, 2}, Andrea Cattoni³, Oliver Hoehn^{1, 2}. ¹Fraunhofer ISE, Freiburg, Germany.²University of Freiburg, Freiburg, Germany.³University of Freiburg, Freiburg, Germany.⁴Politecnico di Milano, Milan, Italy.⁵University of Freiburg, Freiburg, Germany

Annealing Mechanisms in Proton-irradiated, Ultra-thin InP Epitaxial Solar Cells

James H. Shin, Toluwalase Agoro, Venkata S. A. Chaluvadi, Louise C. Hirst. University of Cambridge, Cambridge, United Kingdom

Using Spectroscopic Ellipsometry to Probe for Proton Induced Radiation Damage in Perovskite Solar Cells

Julia Spaziani¹, Buh Kum Tatchen¹, Bekele Teklemariam¹, Bibhudutta Rout², Stephen Polly¹, Ahmad Kirmani¹, Seth Hubbard¹. ¹Rochester Institute of Technology, Rochester, NY, USA.²University of North Texas, Denton, TX, USA

MOVPE Growth and Spalling of III-V solar cells on GaAs(211)

Myles A Steiner¹, Nicholas Yoo^{1, 2}, Sarah Collins¹, Theresa Saenz¹, Tadeas Hanus¹, John Goldsmith¹, Anica Neumann¹, Jacob Cordell¹, Michelle Young¹, Shaniah Greene¹, Corinne Packard^{2, 3}, William McMahon¹. ¹National Laboratory of the Rockies, Golden, CO, USA.²Colorado School of Mines, Golden, CO, USA.³University of Southern California, Los Angeles, CA, USA

GRAPHENE/INP SCHOTTKY PHOTOVOLTAICS WITH QUANTUM-DOT INTERMEDIATE-BAND ENHANCEMENT FOR LUNAR AM0 OPERATION UNDER COUPLED TEMPERATURE–FLUENCE STRESS

Argyrios Varonides. University of Scranton, Scranton, PA, USA

Analysis of Next Generation Solar Cells for Space Use

Masafumi Yamaguchi¹, Mitsuru Imaizumi², Yoshio Ohshita¹. ¹Toyota Technological Institute, Nagoya, Japan.²Sanjo University, Sanjo, Japan

Exploring Parameters Affecting the Etch Rate of Sacrificial Layer in Inverted Metamorphic Multijunction Solar Cells

Bernice Mae Yu Jeco-Espaldon, Yusuke Oteki, Yoshitaka Okada. The University of Tokyo, Meguro-ku, Japan

Understanding the thermomechanical properties of polyolefin encapsulants for reliable perovskite solar module packaging

Marco Casareto¹, Nick Bosco², Laura Schelhas², Michael Owen-Bellini², Nicholas Rolston¹. ¹Arizona State University, Tempe, AZ, USA.²National Laboratory of the Rockies, Golden, CO, USA

Controlled crystal reorientationin Cs3Bi2I9 films using solvent and nanoparticle engineering

Ankit Choudhary, Haralabos Efstathiadis. University at Albany, State university of New York, Albany, NY, USA

Band-Offset Maps and Defect Tolerance in Bromide-Rich High-Bandgap Perovskite Solar Cells

Antonio Fronteddu, Federica Cappelluti. Department of Electronics and Telecommunications, Politecnico di Torino, Turin, Italy

How Moisture and Oxygen Influence Antisolvent-Free Perovskite Crystallization Pathways

Maimur Hossain¹, Connor J. Dolan¹, Eric Oberholtz¹, Darya Kamiyama¹, Jack R. Palmer¹, Paulo E. Marchezi¹, Tim Kodalle², Carolin Sutter-Fella ², David P. Fenning¹. ¹University of California San Diego, San Diego, CA, USA.²Lawrence Berkeley National Laboratory, Berkeley, CA, USA

Improved Mechanical Robustness and Durability Enabled by Textured Wafers and Interlayers in Perovskite-Silicon Tandem Solar Cells

Muzhi Li¹, Mathilde Fievez², Zhengshan Yu², Nicholas Rolston¹. ¹Materials Science and Engineering, Fulton Schools of Engineering, Arizona State University, Tempe, AZ, USA.²Beyond Silicon, Tempe, AZ, USA

Optimization of PDINN as a Cathode Interlayer for Organic Solar Cells

Muhammad Salik Qureshi , Amman ChoughleAmmar Nayfeh. Khalifa University, Abu Dhabi, United Arab Emirates

The 4T Factory: Integrating Factory Planning, CoO, and LCOE Dynamics for Perovskite-Silicon Commercialization

Julian Reichle¹Markus Beck¹, Mehul Raval¹, Siddhartha Garud², Wolfgang JooA¹, Rutger Schlatmann², Peter Fath¹. ¹RCT Solutions GmbH, Konstanz, Germany.²Helmholz-Zentrum Berlin, Berlin, Germany

First-Principles Analysis of Iodine Migration and Electronic Degradation in MAPbI

Andre Slonopas¹, Matthew Limpert², Nam Le¹, James Spicer¹. ¹Johns Hopkins University, Baltimore, MD, USA.²2Army Training and Transformation Command, Aberdeen Proving Grounds, MD, USA

Benchmarking Performance of Wafer-Scale Perovskite/Si Tandems: Methods, Challenges, and Recommendations

Tao Song, Jeremy Brewer, John F. Geisz, Idris Davis, Rafell Williams, Nikos Kopidakis. National Laboratory of the Rockies, Golden, CO, USA

The Ideal Quench? Gas-Quenching Timing and Wet Film Evolution in Slot-Die Coated Perovskites

Alexander Tarasov¹, Lennart Reb¹, Nasim Rezaei-Hartmann², Adrian Adrian², Anton Dzong¹, Enno Malguth², Claudine GroA², Madeleine Justianto², Florian Mathies¹, Eva Unger¹Christian Camus². ¹Helmholtz-Centre Berlin for Materials and Energy GmbH, Berlin, Germany.²LayTec AG, Berlin, Germany

Field durability tests of perovskite solar cells loaded with fixed resistors

Takeshi Tayagaki, Sayaka Hirooka, Kohei Yamamoto, Takurou N. Murakami, Masahiro Yoshita. National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan

Toward Accurate Energy Yield Predictions for Perovskite-Based Tandem Photovoltaics

Emily L Warren, Rajiv Daxini, Robert Witteck, William E. McMahon, Axel F. Palmstrom, Kai Zhu, Laura T. Schelhas, Joseph J. Berry. National Laboratory of the Rockies, Golden, CO, USA

An Abrasion-Resistant Anti-soiling and Anti-reflective Coating for Solar Cover Glass

Madupa Abeywardena^{1, 2}, Carmen Wang^{1, 2}, QianFeng Xu³Alan Lyons^{1, 2, 3}. ¹City University of New York Graduate Center, New York, NY, USA.²College of Staten Island, CUNY, Staten Island, NY, USA.³ARL Designs LLC, Summit, NJ, USA

Is IEC-61853 testing useful for predicting the energy yield of tandem solar cells?

Rajiv Daxini, William E McMahon, Robert Witteck, Emily Warren. National Laboratory of the Rockies, Golden, CO, USA

Shingled Module Integration of Monolithic TwoTerminal III-V//Si Tandem Solar Cells Exceeding 30 % Module Efficiency

Jonas D. De Rose, Leonhard BApck, Tadeo Schweigstill, Jan Benick, Ralph MA¼ller, Malte Klitzke, David Lackner, Torsten RApA, Gerald Siefer, Holger Neuhaus, Florian Clement, Oliver HAphnFrank Dimroth. Fraunhofer ISE, Freiburg, Germany

Matrix-based Formulism for Fast and Flexible PV System Simulations

Christiana Honsberg¹, Stuart Bowden², Justin Faris¹, Michael Goryll¹, Stephen Goodnick¹. ¹Arizona State University, Tempe, AZ, USA.²Solestial Solar, Tempe, AZ, USA

Comparative Evaluation of Monofacial and Bifacial Half-cut Crystalline Silicon based PV Systems under Partial Shading

Khadijah khan¹, Hayder Ali²Hassan A Khan¹. ¹Dept. Of Electrical Engineering, LUMS, Lahore, Pakistan.²King Fahd University of Petroleum and Minerals (KFUPM, Dhahran, Saudi Arabia

Performance Evaluation of a 236 kWp Bifacial Rooftop PV System

Muhammad Khizer, Khadijah KhanHassan A Khan. Dept. Of Electrical Engineering, LUMS, Lahore, Pakistan

Design, Implementation, and Outdoor Performance of a GaN-Based Boost MPPT Converter Interfaced with a Bifacial PV Module

Alex Musetti¹Michel Piliougine², Payam Rajabi Kalvani³, Salvatore Antonino Lombardo², Luca Selmi³, Pierpaolo Palestri³, Giovanna Sozzi¹, Alessandro Soldati¹. ¹UniversitAn di Parma, Dip. di Ingegneria e Architettura, Parma, Italy.²Consiglio Nazionale delle Ricerche, Istituto per la Microelettronica e Microsistemi, Catania, Italy.³UniversitAn degli Studi di Modena e Reggio Emilia, Dip. di Ingegneria Enzo Ferrari, Modena, Italy

Insights into the material properties of EPE encapsulants for PV application

Nikolina Pervan^{1, 2}, Gabriele C. Eder³, Yuliya Voronko³, Gernot Oreski^{1, 2}. ¹Polymer Competence Center Leoben GmbH, Leoben, Austria.²Chair of Materials Science and Testing of Polymers, MontanuniversitAct Leoben, Leoben, Austria.³A, Vienna, Austria

Modeling Differences Between Fixed-Tilt Grount-Mounted and Project Nexus Solar Canal Designs

Jeremiah Reagan, Olaniyan Rocker, Brandi McKuin. UC Merced, Merced, CA, USA

Tracker anomaly detection in PV fleet data via interpretable machine learning

Corentin Servouze¹, Bennet Meyers², Matthew Muller². ¹Stanford University, Stanford, CA, USA.²NREL, Golden, CA, USA

Overcoming Photovoltaic Systems Performance Through Non-Concentrating Two-Axis Tracking

Sneha Shanmuganathan¹, Bhavya Sree Boya Nayakula¹, Justin ¹, Stuart Bowden ¹, Christiana Honsberg ¹. ¹Arizona State University, Tempe, AZ, USA.²Arizona State University, Tempe, AZ, USA.³Arizona State University, Tempe, AZ, USA.⁴Arizona State University, Tempe, AZ, USA.⁵Arizona State University, Tempe, AZ, USA

Approaches to Optimizing Photovoltaic Energy Harvesting in Various Environments

Min Ju Yun¹, Yeon Hyang Sim¹, Luthfan Fauzan^{1, 2}, Hyekyoung Choi¹, Dong Yoon Lee¹, Seung I. Cha^{1, 2}. ¹Korea Electrotechnology Research Institute, Changwon, South Korea.²University of Science and Technology, Changwon, South Korea