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1993
Conference Paper
Titel
Performance of thin film solar cells under realistic reporting conditions including degradation effects
Abstract
Test cells made of two thin film materials are investigated under realistic reporting conditions: a- Si-H and CuInSe2. Basically a-Si-H cells exhibit strong spectral effects and small temperature effects when operated outdoors. In contrast CuInSe2 devices have a strongly temperature dependent performance and a negligible spectral effect. Therefore the sitespecific performance of these two different thin film cells is vastly different. For the degradation modelling of a-Si:H cells, a model proposed in (1) is investigated. By comparison with several other degradation experiments, a certain generalisation of the model is possible. When this model is applied to realistic reporting conditions an equilibrium state between degradation and arinealing processes defines an end-of-life state. A Site-dependent degradation study reveals that the annual average temperature of the location fundamentally influences the overall reduction in the solar cell performance. A method for simultaneous simulati on of RRC effects and degradation is developed.