Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP20)
Publication date: 14th October 2019
Recently, there have been many efforts to develop the inorganic perovskite solar cells such as CsPbBr3 based perovskite solar cells due to instability of organic-inorganic hybrid perovskite solar cells. Especially, the CsPbBr3 is a promising candidate for the inorganic perovskite because of its high stability and high transmittance. However, its fabrication process is mostly multi step process, which is complicated and laborious.
In this work, CsPbBr3 perovskite solar cells were made by one step process. We measured UV visible absorbance and steady state photoluminescence measurements to investigate optical properties of CsPbBr3 perovskites. The CsPbBr3 perovskite films showed bandgaps about 2.36eV. By introducing optimized annealing temperature of one step processed CsPbBr3 perovskite films, and we achieved a power conversion efficiency of 1.91%. Afterward. This simplified CsPbBr3 fabrication process will contribute to reduce fabrication cost, and could promote the development of high stability and high transmittance perovskite solar cells.
This work was partly supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) (20193091010160, Development of 3D eyed transparent inorganic photovoltaic module) and supported by National Research Foundation of Korea (NRF) grants funded by the Korean government (MSIT) (NRF- 2018R1C1B6008028, 2019K2A9A2A08000132).
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