Proceedings of nanoGe September Meeting 2017 (NFM17)
Publication date: 20th June 2016
Organic-inorganic perovskites have emerged as one of the most promising light absorber materials for solar cells, which have exhibited an astonishing progress since 2009 with efficiencies currently exceeding 20%. Owing to its ease of solution processability, low temperature and excellent optoelectronic properties, organic-inorganic perovskite solar cells have drawn sufficiently interest in developing alternative technologies to conventional silicon solar cells. However, the degradation issues of perovskite solar cells, such as low tolerance to moisture, to UV light and thermal stability, limiting the further advancements and commercialization of these devices. In this work, we study the thermal degradation under 1 sun illumination of CH3NH3PbI3 deposited by different sequential methods, using thermographic analysis. By evaluating the thermography images and photovoltaic performance of perovskite solar cells at different time periods during light conditions, it is possible the identification of local defects that are hot spots for degrading the perovskite layer, and reducing the optoelectronic properties.
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