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Updated: Mar 6, 2026
Flash Infrared Annealing for Perovskite Solar Cell Processing
Published on: February 3, 2021
Modulated CH3NH3PbI3-xBrx film for efficient perovskite solar cells exceeding 18
Yongguang Tu1, Jihuai Wu1, Zhang Lan1
1Engineering Research Center of Environment-Friendly Functional Materials for Ministry of Education, Institute of Materials Physical Chemistry, College of Material Science and Engineering, Huaqiao University, Xiamen 361021, China.
Abstract:
The organic-inorganic lead halide perovskite layer is a crucial factor for the high performance perovskite solar cell (PSC). We introduce CH3NH3Br in the precursor solution to prepare CH3NH3PbI3-xBrx hybrid perovskite, and an uniform perovskite layer with improved crystallinity and apparent grain contour is obtained, resulting in the significant improvement of photovoltaic performance of PSCs. The effects of CH3NH3Br on the perovskite morphology, crystallinity, absorption property, charge carrier dynamics and device characteristics are discussed, and the improvement of open circuit voltage of the device depended on Br doping is confirmed. Based on above, the device based on CH3NH3PbI2.86Br0.14 exhibits a champion power conversion efficiency (PCE) of 18.02%. This study represents an efficient method for high-performance perovskite solar cell by modulating CH3NH3PbI3-xBrx film.
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