Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV24)
Publication date: 6th February 2024
The commercialization of perovskite solar cells has been restricted so far mainly due to their short life time. In general, the degradation of the devices is accelerated at high operating temperatures [1]. The current work studies the performance and the stability of those cells via Peltier cooling. The experimental setup includes a fluorine-doped tin oxide (FTO) / compact TiO2 / mesoporous TiO2 / (FA/MA/Cs)PbI3-xBrx / Spiro-MeOTAD / Ag solar cell with an initial power conversion efficiency of ca. 20% as well as a Peltier module beneath, which is connected to an external power supply in order to provide accurate temperature control on the photovoltaic device. The temperature on the surface of the solar cell is monitored via a thermal camera and spans from ca. 0 oC (maximum cooling) to ca. 60 oC (no cooling) under 1 sun illumination. The J-V measurements are performed in situ and indicate that the power conversion efficiency is marginally affected over the range 0 - 50 oC, but largely and irreversibly effected at temperatures over 50 oC. The degradation of the layers in the perovskite solar cells at high temperatures is also monitored via Raman and UV-Vis spectroscopies. The study concludes that the intermittent Peltier cooling may prove to be a useful method to increase the overall lifetime of the perovskite solar cell.
The research project was supported by the Hellenic Foundation for Research and Innovation (H.F.R.I.) under the “2nd Call for H.F.R.I. Research Projects to support Post-Doctoral Researchers” (Project Number: 450).
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