TY - JOUR A1 - Schaible, Jonas A1 - Winarto, Hanifah A1 - Škorjanc, Viktor A1 - Yoo, Danbi A1 - Zimmermann, Lea A1 - Jäger, Klaus A1 - Sekulic, Ivan A1 - Schneider, Philipp‐Immanuel A1 - Burger, Sven A1 - Wessels, Andreas A1 - Bläsi, Benedikt A1 - Becker, Christiane T1 - Optimizing Aesthetic Appearance of Perovskite Solar Cells Using Color Filters JF - Solar RRL N2 - The significance of color aesthetics in photovoltaic (PV) modules gains importance, especially in design‐centric applications like building‐integrated PVs. Color filters based on distributed Bragg reflectors, consisting of alternating thin‐film layers of different refractive indices, can modify the appearance of standard silicon modules. This approach is also extended to optimize the color appearance of emerging PV technologies such as perovskite solar cells, which typically exhibit a less appealing gray–brownish appearance. In this contribution, perovskite solar‐cell stacks combined with MorphoColor color filters are presented. Angular‐resolved reflectance simulations based on wave optics and ray tracing with experimental data are validated, and the color appearance from various viewing angles is evaluated. Additionally, the impact of individual layers on color appearance and the maximum achievable short‐circuit current density in the perovskite solar cell is investigated. By applying Bayesian optimization, the color distance is minimized to the targeted appearance. Tailoring the bridging layers between the color filter and the perovskite solar cell is found to strongly influence the color impression due to the coherently combined color filter and perovskite solar cell. The presented color optimization concept allows to customize the aesthetics of emerging PV thin‐film technologies such as perovskite solar cells. Y1 - 2025 U6 - https://doi.org/10.1002/solr.202400627 VL - 9 SP - 2400627 PB - Wiley ER - TY - JOUR A1 - Jäger, Klaus A1 - Tejada, Alvarjo A1 - Berwig, Sebastian A1 - Hammerschmidt, Martin A1 - Tockhorn, Philipp A1 - Albrecht, Steve A1 - Becker, Christiane T1 - Optical Simulations of Nanotextured All-Perovskite Tandem Solar Cells JF - Adv. Theory Simul. Y1 - 2025 U6 - https://doi.org/10.1002/adts.202400724 VL - 8 SP - 2400724 ER - TY - CHAP A1 - Jäger, Klaus A1 - Burger, Sven A1 - Aeberhard, Urs A1 - Llado, Esther Alarcon A1 - Bläsi, Benedikt A1 - Ehrler, Bruno A1 - Favre, Wilfried A1 - Fejfar, Antonín A1 - Gageot, Tristan A1 - Gordon, Ivan A1 - Helmers, Henning A1 - Höhn, Oliver A1 - Isabella, Olindo A1 - Jošt, Marko A1 - Ledinský, Martin A1 - Mandal, Jyotirmoy A1 - Manley, Phillip A1 - Munoz, Delfina A1 - Lizcano, Juan Camilo Ortiz A1 - Paetzold, Ulrich W. A1 - Raman, Aaswath P. A1 - Sai, Hitoshi A1 - Saive, Rebecca A1 - Schmid, Martina A1 - Yablonovitch, Eli A1 - Becker, Christiane T1 - A Roadmap on Optics for Terawatt Scale Photovoltaics T2 - Advanced Photonics Congress 2024 Y1 - 2024 U6 - https://doi.org/10.1364/SELED.2024.STu2G.5 SP - STu2G.5 PB - Optica Publishing Group ER - TY - CHAP A1 - Schaible, Jonas A1 - Winarto, Hanifah A1 - Skorjanc, Victor A1 - Yoo, Danbi A1 - Zimmermann, Lea A1 - Wessels, Andreas A1 - Jäger, Klaus A1 - Sekulic, Ivan A1 - Schneider, Philipp-Immanuel A1 - Bläsi, Benedikt A1 - Burger, Sven A1 - Becker, Christiane T1 - Optimization strategies for colorful thin film solar cells T2 - Proc. SPIE Y1 - 2025 U6 - https://doi.org/10.1117/12.3041408 VL - PC13361 SP - PC133610E ER - TY - JOUR A1 - Jäger, Klaus A1 - Aeberhard, Urs A1 - Alarcon Llado, Esther A1 - Bläsi, Benedikt A1 - Burger, Sven A1 - Ehrler, Bruno A1 - Favre, Wilfried A1 - Fejfar, Antonín A1 - Gageot, Tristan A1 - Gordon, Ivan A1 - Helmers, Henning A1 - Höhn, Oliver A1 - Isabella, Olindo A1 - Jošt, Marko A1 - Ledinský, Martin A1 - Mandal, Jyotirmoy A1 - Manley, Phillip A1 - Muñoz, Delfina A1 - Omair, Zunaid A1 - Ortiz Lizcano, Juan Camilo A1 - Paetzold, Ulrich W. A1 - Raman, Aaswath P. A1 - Sai, Hitoshi A1 - Saive, Rebecca A1 - Schmid, Martina A1 - Yablonovitch, Eli A1 - Becker, Christiane T1 - Optics for terawatt-scale photovoltaics: review and perspectives JF - Adv. Opt. Photonics N2 - Photovoltaics, a mature technology, is set to play a vital role in achieving a carbon-free energy system. This article examines the pivotal role of optics in advancing photovoltaics. We identify key scientific research areas where the optics community can make significant contributions. We are guided by the central question: How can optics facilitate the large-scale deployment of photovoltaics necessary for decarbonizing our societies? Y1 - 2025 U6 - https://doi.org/10.1364/AOP.530556 SN - 1943-8206 VL - 17 IS - 1 SP - 185 EP - 294 PB - Optica Publishing Group ER - TY - CHAP A1 - Jäger, Klaus A1 - Mandal, Jyotirmoy A1 - Rand, Barry P. A1 - Meggers, Forrest A1 - Becker, Christiane T1 - Thermal Management of Solar Modules with Infrared-Antireflective Coatings T2 - Advanced Photonics Congress Y1 - 2025 U6 - https://doi.org/10.1364/SOLITH.2025.SM4E.2 VL - SOLITH SP - SM4E.2 ER - TY - JOUR A1 - Tillmann, Peter A1 - Bläsi, Benedikt A1 - Burger, Sven A1 - Hammerschmidt, Martin A1 - Höhn, Oliver A1 - Becker, Christiane A1 - Jäger, Klaus T1 - Optimizing metal grating back reflectors for III-V-on-silicon multijunction solar cells JF - Opt. Express Y1 - 2021 U6 - https://doi.org/10.1364/OE.426761 VL - 29 SP - 22517 ER - TY - GEN A1 - Jäger, Klaus A1 - Sutter, Johannes A1 - Schneider, Philipp-Immanuel A1 - Hammerschmidt, Martin A1 - Becker, Christiane T1 - Optical simulations of nanotextured perovskite/silicon tandem solar cell T2 - HZB Data Service Y1 - 2021 U6 - https://doi.org/10.5442/ND000005 ER - TY - CHAP A1 - Tillmann, Peter A1 - Jäger, Klaus A1 - Katz, Eugene A1 - Becker, Christiane T1 - Relaxed current-matching constraints by bifacial operation and luminescent coupling in perovskite/silicon tandem solar cells T2 - 2021 IEEE 48th Photovoltaic Specialists Conference (PVSC) Y1 - 2021 U6 - https://doi.org/10.1109/PVSC43889.2021.9518891 SP - 1086 ER - TY - CHAP A1 - Tockhorn, Philipp A1 - Sutter, Johannes A1 - Cruz, Alexandros A1 - Wagner, Philipp A1 - Jäger, Klaus A1 - Yoo, Danbi A1 - Lang, Felix A1 - Grischek, Max A1 - Li, Bor A1 - Al-Ashouri, Amran A1 - Köhnen, Eike A1 - Stolterfoht, Martin A1 - Neher, Dieter A1 - Schlatmann, Rutger A1 - Rech, Bernd A1 - Stannowski, Bernd A1 - Albrecht, Steve A1 - Becker, Christiane T1 - Nanooptically Enhanced Perovskite/Silicon Tandem Solar Cells with 29.80% Power Conversion Efficiency T2 - OSA Adv. Photonics Y1 - 2022 U6 - https://doi.org/10.1364/NOMA.2022.JTu4H.2 SP - JTu4H.2 ER -