Presentation Details
| Assessing Radiation Hardness of Perovskite Solar Cells via In-Situ Measurements Mohin Sharma1, Mritunjaya Parashar1, Darshpreet Kaur Saini1, Haoran Chen3, Megh N.Khanal2, Todd A.Byers1, Charles Bowen1, Vincent R.Whiteside2, Brandon K.Durant2, Ian R.Sellers2, Zhaoning Song3, Bibhudutta Rout1. 1Department of Physics, Ion Beam Laboratory, University of North Texas, Denton, TX, USA.2Dept.of Electrical Engineering, 230 Davis Hall, University at Buffalo, Buffalo, NY, USA.3Department of Physics and Astronomy, Wright Center for Photovoltaics Innovation and Commercializatio, Toledo, OH, USA |
Abstract
Hybrid metal halide perovskite solar cells are promising candidates for next-generation space photovoltaics due to their high efficiency, lightweight architecture, and reported tolerance to energetic particle irradiation. However, evaluating their true radiation hardness remains challenging. Conventional ex-situ testing can conflate permanent defect formation with concurrent recovery mechanisms such as self-healing, thermal annealing, and light-induced ion redistribution. As a result, post-irradiation measurements alone may underestimate the instantaneous damage that occurs during exposure. In this study, we demonstrate an in-situ methodology for directly quantify radiation-induced degradation in perovskite solar cells under proton irradiation by monitoring the device’s real-time response during beam exposure. Continuous current–voltage tracking enables separation of prompt displacement damage effects from transient reversible processes operating on comparable timescales. The results reveal competing interplay of degradation and recovery signatures that depend strongly on factors such as proton energy, fluence rate, and operating environment, including vacuum, illumination, and thermal load. By capturing the instantaneous functional evolution of devices during irradiation, this operando approach provides a more precise framework for assessing intrinsic radiation resilience and establishing meaningful qualification metrics for perovskite photovoltaics under coupled space-relevant stress conditions
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No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.
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