Highly Accelerated Lifetime Testing via Extreme Illumination at Controlled Temperature for Thin Film Solar Cells
| Autor: | Vetter, A., Burlafinger, K., Woiton, M., Brabec, C.J. |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| DOI: | 10.4229/eupvsec20152015-3co.8.1 |
| Popis: | 31st European Photovoltaic Solar Energy Conference and Exhibition; 1080-1082 All available solar cells suffer from degradation during their use outdoors. Several accelerated lifetime tests have been established in order to investigate degradation and to optimize solar cells regarding lifetime. Most tests focus on degradation due to the environment, e. g. ingress of water or oxygen. Such degradation mechanisms may be reduced by an improved encapsulation of the cells and / or an optimized cell architecture. With improving encapsulation and cell architecture, lifetime of the solar cells will become more and more restricted by degradation due to illumination by the sun. Lifetime tests under one sun are available to test photo-stability but require very long lasting experiments. We have designed and built an innovative setup, which allows for testing the photo-stability of solar cells at several hundreds of suns at controlled temperature. Illumination is realized by a high power Xenon short arc lamp (close to sun spectrum) and temperature control of the solar cells by an innovative cooling system. We have verified the testing method with P3HT:PCBM solar cells. Degradation due to photon flux and temperature may be decoupled. It needs to be pointed out that the presented method is not restricted to a certain solar cell type. |
| Databáze: | OpenAIRE |
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