INORGANIC CsPbBr₃ PEROVSKITE TYPE SOLAR CELL

Hybrid organic-inorganic metal halide perovskites have drew much attention over the past 5 years due to their amazing optoelectronic properties and promising application in energy field. However, compared to hybrid organic−inorganic perovskites, the all-inorganic metal halide perovskites are less studied in the field of solar cells. The inorganic CsPbBr₃ perovskite was implemented in solar cell and working as good as its organic counterparts especially in generation of phtovoltage. Here, we have fabricated inorganic CsPbBr₃ perovskite type solar cell by sequential deposition method. different structure and interface enginnering were applied to study the recombination process and photovoltage behavior by Voc vs. log light intensity and Voc decay method. We discussed the recombination pathway from TiO₂ and CsPbBr₃ perovskite interface and the long carrier life time due to slow recombination in mesoporous structured device. However, planar structured device showing shorter carrier life time or fast recombination of carriers which may happens in perovskite.