A1 Refereed original research article in a scientific journal
Photochromic Control in Hybrid Perovskite Photovoltaics
Authors: Luo, Weifan; Castán, José María Andrés; Mirani, Diego; Riquelme, Antonio J.; Sachan, Amit Kumar; Kurman, Olzhas; Kim, Sunju; Faini, Fabiola; Zimmermann, Paul; Hinderhofer, Alexander; Patel, Yash; Frei, Aaron T.; Moser, Jacques-E.; Ramirez, Daniel; Schreiber, Frank; Maldivi, Pascale; Seo, Ji-Youn; Tress, Wolfgang; Grancini, Giulia; Demadrille, Renaud; Milić, Jovana V.
Publisher: WILEY-V C H VERLAG GMBH
Publishing place: WEINHEIM
Publication year: 2025
Journal: Advanced Materials
Journal name in source: ADVANCED MATERIALS
Journal acronym: ADV MATER
Article number: 2420143
Number of pages: 9
ISSN: 0935-9648
eISSN: 1521-4095
DOI: https://doi.org/10.1002/adma.202420143
Web address : https://doi.org/10.1002/adma.202420143
The application of perovskite photovoltaics is hampered by issues related to the operational stability upon exposure to external stimuli, such as voltage bias and light. The dynamic control of the properties of perovskite materials in response to light could ensure the durability of perovskite solar cells, which is especially critical at the interface with charge-extraction layers. We have applied a functionalized photochromic material based on spiro-indoline naphthoxazine at the interface with hole-transport layers in the corresponding perovskite solar cells with the aim of stabilizing them in response to voltage bias and light. We demonstrate photoinduced transformation by a combination of techniques, including transient absorption spectroscopy and Kelvin probe force microscopy. As a result, the application of the photochromic derivative offers improvements in photovoltaic performance and operational stability, highlighting the potential of dynamic photochromic strategies in perovskite photovoltaics.
Funding information in the publication:
Weifan Luo and Jovana V. Milic acknowledge funding from the Swiss National Science Foundation project no. 193174, and the fellowship from the Swiss Leading House for the Latin American Region for support. They also appreciate the generous support of Prof. Ullrich Steiner and Dr. Efrain Ochoa-Martinez (Adolphe Merkle Institute, University of Fribourg) throughout the project. Jovana V. Milic, Renaud Demadrille, José MaríaAndrés Castán, and Antonio J. Riquelme, Diego Mirani and Pascale Maldivi, Amit Kumar Sachan, and Tress Wolfgang acknowledge the European Research Council (ERC) for funding. We acknowledge the ESRF project no. 98610 and 93090 for the provision of synchrotron facilities and we would like to thank Dimitry Chernyshov and Vadim Dyadkin for assistancein using beamline BM01 and Lena Merten for measuring the GIWAXS. Alexander Hinderhofer thanks the BMBF for funding project ErUM-prono. 05K19VTA. This work was funded under the European Union’s Horizon 2020 research and innovation programme (grant agreement number 832606; project PISCO; 851676, project OptEIon).
