Effect of RbF post-deposition treatment on open-circuit voltage in wide-gap (Ag,Cu)(In,Ga)Se2 solar cells

Rico Gutzler, Saeed Bayat, Dimitrios Hariskos, Ana Kanevce, Wolfram Hempel, Stefan Paetel, Susanne Siebentritt and Wolfram Witte

EES Sol., 2026
DOI: 10.1039/D5EL00176E

Interface engineering approach of in-air-processed Sb2S3 solar cells enabling 7.5% AM 1.5G device efficiency and an 18% indoor milestone performance

Hadeer Hussien, Malle Krunks, Nicolae Spalatu, Atanas Katerski, Zacharie Jehl Li-Kao, Sergio Giraldo, Daniel Abou-Ras, Arivazhagan Valluvar Oli, Susanne Siebentritt, Jonathan D. Major, Aeshah A. Almushawwah, Thomas P. Shalvey, Raitis Grzibovskis, Aivars Vembris and Ilona Oja Acik

J. Mater. Chem. A, 2025, 13, 37215
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Impact of processing atmosphere on nanoscale properties of highly efficient Cs0.05MA0.05FA0.9PbI3 perovskite solar cells

Muhammad Uzair Farooq, Sevan Gharabeiki, Ding Yong, Joana Ferreira Machado, Jean-Nicolas Audinot, Tom Wirtz, Mohammad Khaja Nazeeruddin, Susanne Sienbentritt and Alex Redinger

Nanoscale, 2025, 17, 8861
DOI: 10.1039/D4NR04205K

Sub-micron Cu(In,Ga)Se2 solar cells with an efficiency of 18.2% enabled by a hole transport layer

Taowen Wang, Longfei Song, Saeed Bayat, Michele Melchiorre, Nathalie Valle, Adrian-Marie Philippe, Emmanuel Defay, Sebastjan Glinsek and Susanne Siebentritt

EES Sol., 2025, 1, 1102
DOI: 10.1039/D5EL00049A

30% efficient triple-cation perovskite solar cells under indoor illumination enabled by rare earth EuCl3 doping

Jie Xu, Sathy Harshavardhan Reddy, Luigi Angelo Castriotta, Suresh Kumar Podapangi, Marco Luce, Antonio Cricenti, Aldo Di Carlo and Thomas M. Brown

Sustainable Energy Fuels, 2023, 7, 3404
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Correlative microscopy and monitoring of segregation processes in optoelectronic semiconductor materials and devices

Daniel Abou-Ras, Ulrike Bloeck, Sebastián Caicedo-Dávila, Alberto Eljarrat, Hannah Funk, Adnan Hammud, Sinju Thomas, Dan R. Wargulski, Thomas Lunkenbein and Christoph T. Koch

Journal of Applied Physics, 2023, 133
DOI: 10.1063/5.0138952

Impact of Minimal Silver Incorporation on Chalcopyrite Absorbers—Origins for Improved Open‐Circuit Voltages in (Ag,Cu)(In,Ga)Se2 Solar Cells

Sateesh Prathapani, Sevan Gharabeiki, Jakob Lauche, René Schwiddessen, Pablo Reyes‐Figueroa, Nikolaus Weinberger, Michele Melchiorre, Rutger Schlatmann, Iver Lauermann and Christian Alexander Kaufmann

Solar RRL, 2025, 9
DOI: 10.1002/solr.202400863

Wide‐Bandgap Cu(In, Ga)S2 Solar Cell: Mitigation of Composition Segregation in High Ga Films for Better Efficiency

Damilola Adeleye, Mohit Sood, Arivazhagan Valluvar Oli, Tobias Törndahl, Adam Hultqvist, Aline Vanderhaegen, Evandro Martin Lanzoni, Yucheng Hu, Gunnar Kusch, Michele Melchiorre, Alex Redinger, Rachel A. Oliver and Susanne Siebentritt

Small, 2025, 21
DOI: 10.1002/smll.202405221

Exploring barium ferrite (BaFe2O4) nanoparticle’s functioning under the influence of manganese (Mn) on structural, magnetic, electric, and optical properties for photovoltaic (PV) applications

Irum Shahid Khan and Iftikhar Hussain Gul

J Sol-Gel Sci Technol, 2025, 116, 1358
DOI: 10.1007/s10971-025-06924-0

Enhancing the efficiency and stability of perovskite solar cells via a polymer heterointerface bridge

Xiaodan Tang, Chenglin Yang, Yafeng Xu, Jianxing Xia, Bo Li, Miao Li, Yuanyuan Zhou, Lulu Jiang, Hairui Liu, Kunhui Ma, Qiao Yu, Bitao Dong, Yuhang Liu, Omar F. Mohammed and Xiaopeng Zheng

Nat. Photon., 2025, 19, 701
DOI: 10.1038/s41566-025-01676-3

Light‐Soaking Effects in High‐Efficiency Cu(In,Ga)Se2 and (Ag,Cu)(In,Ga)Se2 Solar Cells

Klara Kiselman, Jan Keller, Patrick Pearson, Kostiantyn Sopiha, Erik Wallin and Marika Edoff

Progress in Photovoltaics, 2025, 33, 735
DOI: 10.1002/pip.3912

Reduction of Nonradiative Recombination in Sb2Se3 Thin Films by Heat Treatment Under Sulfur Atmosphere

Arnas Naujokaitis, Martynas Talaikis, Vidas Pakstas, Gerarda Jocytė, Tien Le, Susanne Siebentritt, Nathalie Valle and Rokas Kondrotas

Solar RRL, 2026, 10
DOI: 10.1002/solr.202500848

Comprehensive model for evaluating voltage losses and performance improvements in thin-film photovoltaic devices

Marco Nardone, Sakshi Gupta, Eva Mulloy, Steve Johnston, Eric Colegrove, Joel N. Duenow, Brian Good, Craig L. Perkins, Darius Kuciauskas and Matthew O. Reese

Phys. Rev. Applied, 2025, 23
DOI: 10.1103/PhysRevApplied.23.034019

Chalcopyrite solar cells —state-of-the-art and options for improvement

S. Siebentritt and T. P. Weiss

Sci. China Phys. Mech. Astron., 2023, 66
DOI: 10.1007/s11433-022-2001-4

Microscopic origins of radiative performance losses in thin-film solar cells at the example of (Ag,Cu)(In,Ga)Se2 devices

Daniel Abou-Ras

Journal of Vacuum Science & Technology A, 2024, 42
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Temperature-dependent photoluminescence of the synthesized Sb2S3 particles: From nanoparticles to crystalline samples

Nikola Ilić, Dmitry A. Zatsepin, Dmitry Yu Biryukov, Anatoly F. Zatsepin and Ivana Validžić

Optical Materials, 2025, 162, 116803
DOI: 10.1016/j.optmat.2025.116803

CuIn (Se,Te)2 Absorbers With Bandgaps <1 eV for Bottom Cells in Tandem Applications

Thomas Paul Weiss, Mohit Sood, Aline Vanderhaegen and Susanne Siebentritt

Progress in Photovoltaics, 2025, 33, 253
DOI: 10.1002/pip.3851

Sodium Induced Beneficial Effects in Wide Bandgap Cu(In,Ga)S2 Solar Cell With 15.7% Efficiency

Arivazhagan Valluvar Oli, Kulwinder Kaur, Michele Melchiorre, Aubin Jean‐Claude Mireille Prot, Sevan Gharabeiki, Yucheng Hu, Gunnar Kusch, Adam Hultqvist, Tobias Törndahl, Wolfram Hempel, Wolfram Witte, Rachel A. Oliver and Susanne Siebentritt

Progress in Photovoltaics, 2026, 34, 439
DOI: 10.1002/pip.70033

Shifting the Paradigm: A Functional Hole‐Selective Transport Layer for Chalcopyrite Solar Cells

Taowen Wang, Longfei Song, Sevan Gharabeiki, Mohit Sood, Aubin JC.M. Prot, Ricardo G. Poeira, Michele Melchiorre, Nathalie Valle, Adrian‐Marie Philippe, Sebastjan Glinsek, Emmanuel Defay, Phillip J. Dale and Susanne Siebentritt

Solar RRL, 2024, 8
DOI: 10.1002/solr.202400212

High-concentration silver alloying and steep back-contact gallium grading enabling copper indium gallium selenide solar cell with 23.6% efficiency

Jan Keller, Klara Kiselman, Olivier Donzel-Gargand, Natalia M. Martin, Melike Babucci, Olle Lundberg, Erik Wallin, Lars Stolt and Marika Edoff

Nat Energy, 2024, 9, 467
DOI: 10.1038/s41560-024-01472-3

Organic Passivation of Deep Defects in Cu(In,Ga)Se 2 Film for Geometry-Simplified Compound Solar Cells

Jingwei Chen, Xuan Chang, Jianxin Guo, Qing Gao, Xuning Zhang, Chenxu Liu, Xueliang Yang, Xin Zhou, Bingbing Chen, Feng Li, Jianming Wang, Xiaobing Yan, Dengyuan Song, Han Li, Benjamin S. Flavel, Shufang Wang and Jianhui Chen

Research, 2023, 6
DOI: 10.34133/research.0084

Impact of base layer thickness on the performance of single-junction GaAs solar cells: A photoluminescence and photoreflectance study

Behnam Zeinalvand Farzin, Geun Hyeong Kim, S. Bahareh Seyedein Ardebili, Tae In Kang, Gyoung Du Park, Jong Su Kim and Sang Jun Lee

Journal of Luminescence, 2025, 286, 121336
DOI: 10.1016/j.jlumin.2025.121336

Composition variations in Cu(In,Ga)(S,Se)2 solar cells: Not a gradient, but an interlaced network of two phases

Aubin JC. M. Prot, Michele Melchiorre, Felix Dingwell, Anastasia Zelenina, Hossam Elanzeery, Alberto Lomuscio, Thomas Dalibor, Maxim Guc, Robert Fonoll-Rubio, Victor Izquierdo-Roca, Gunnar Kusch, Rachel A. Oliver and Susanne Siebentritt

APL Materials, 2023, 11
DOI: 10.1063/5.0165546

Improved Sequentially Processed Cu(In,Ga)(S,Se)2 by Ag Alloying

Aubin Jean‐Claude Mireille Prot, Michele Melchiorre, Tilly Schaaf, Ricardo Gonçalinho Poeira, Hossam Elanzeery, Alberto Lomuscio, Souhaib Oueslati, Anastasia Zelenina, Thomas Dalibor, Gunnar Kusch, Yucheng Hu, Rachel Angharad Oliver and Susanne Siebentritt

Solar RRL, 2024, 8
DOI: 10.1002/solr.202400208

Silver‐Alloyed Wide‐Bandgap (Ag,Cu)(In,Ga)S2 Thin‐Film Solar Cells With 15.5% Efficiency

Yucheng Hu, Ece Washbrook, Arivazhagan Valluvar Oli, Andrea Griesi, Yurii P. Ivanov, Mariam Pelling, Simon M. Fairclough, Kulwinder Kaur, Michele Melchiorre, Adam Hultqvist, Tobias Törndahl, Wolfram Hempel, Wolfram Witte, Giorgio Divitini, Susanne Siebentritt, Rachel A. Oliver and Gunnar Kusch

Progress in Photovoltaics, 2026
DOI: 10.1002/pip.70097

Composition dependence of electronic defects in CuGaS2

Damilola Adeleye, Mohit Sood, Michele Melchiorre, Alice Debot and Susanne Siebentritt

Progress in Photovoltaics, 2024, 32, 528
DOI: 10.1002/pip.3778

Grain boundaries are not the source of Urbach tails in Cu(In,Ga)Se2 absorbers

Sevan Gharabeiki, Muhammad Uzair Farooq, Taowen Wang, Mohit Sood, Michele Melchiorre, Christian A Kaufmann, Alex Redinger and Susanne Siebentritt

J. Phys. Energy, 2024, 6, 035008
DOI: 10.1088/2515-7655/ad6104

Effect of a Band-Gap Gradient on the Radiative Losses in the Open-Circuit Voltage of Solar Cells

Sevan Gharabeiki, Francesco Lodola, Tilly Schaaf, Taowen Wang, Michele Melchiorre, Nathalie Valle, Jérémy Niclout, Manha Ali, Yucheng Hu, Gunnar Kusch, Rachel A. Oliver and Susanne Siebentritt

PRX Energy, 2025, 4
DOI: 10.1103/r25l-ftmp

On the role of sodium and copper off‐stoichiometry in Cu (In,Ga)S2 for photovoltaic applications: Insights from the investigation of more than 500 samples

Léo Choubrac, Eugene Bertin, Fabien Pineau, Ludovic Arzel, Thomas Lepetit, Lionel Assmann, Thamer Aloui, Sylvie Harel and Nicolas Barreau

Progress in Photovoltaics, 2023, 31, 971
DOI: 10.1002/pip.3701