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Effect of different annealing temperatures on the performance of CsPbBr3 films and their solar cells

FEI ZHAO1,* , YANNAN ZHANG1, YIXIN GUO2,*

Affiliation

  1. School of Photoelectric Engineering, Changzhou Institute of Technology, Changzhou, Jiangsu, 213032, China
  2. Department of Physics, Shanghai Normal University, Shanghai 200233, China

Abstract

All-inorganic CsPbBr3 perovskite solar cells have attracted widespread attention due to their excellent stability. However, the poor crystal quality and large optical bandgap of CsPbBr3 perovskite films limit the efficiency improvement of solar cells. Here, CsPbBr3 perovskite films and corresponding solar cells are prepared by solution method. The effect of different annealing temperature on the performance of CsPbBr3 perovskite films and corresponding solar cells is studied. The results show that compared with CsPbBr3 solar cells annealed at 200 ℃ and 300 ℃, CsPbBr3 solar cells annealed at 250℃ have higher efficiency (1.74%). The reason behind the efficiency improvement for CsPbBr3 device is that CsPbBr3 films with 250℃ annealing temperatures have better crystallinity and smaller optical band gap (2.344eV)..

Keywords

CsPbBr3 film, Solar cell, Crystallinity, Optical band gap.

Submitted at: Dec. 7, 2024
Accepted at: Oct. 14, 2025

Citation

FEI ZHAO, YANNAN ZHANG, YIXIN GUO, Effect of different annealing temperatures on the performance of CsPbBr3 films and their solar cells, Journal of Optoelectronics and Advanced Materials Vol. 27, Iss. 9-10, pp. 457-462 (2025)