Journal article

Chemical vapor deposition growth of phase-selective inorganic lead halide perovskite films for sensitive photodetectors

Weilong Xu, Mengsi Niu, Xiaoyu Yang, Haiyue Chen, Xiaohong Cai, Trevor A Smith, Kenneth P Ghiggino, Xiaotao Hao

CHINESE CHEMICAL LETTERS | ELSEVIER SCIENCE INC | Published : 2021

Abstract

Inorganic lead halide perovskites are attractive optoelectronic materials owing to their relative stability compared to organic cation alternatives. The chemical vapor deposition (CVD) method offers potential for high quality perovskite film growth. The deposition temperature is a critical parameter determining the film quality owing to the melting difference between the precursors. Here, perovskite films were deposited by the CVD method at various temperatures between 500−800 °C. The perovskite phase converts from CsPb2Br5 to CsPbBr3 gradually as the deposition temperature is increased. The grain size of the perovskite films also increases with temperature. The phase transition mechanism wa..

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Grants

Awarded by National Natural Science Foundation of China


Awarded by Natural Science Foundation of Jiangsu Province


Awarded by Natural Science Foundation of Jiangsu Higher Education


Awarded by ARC Centre of Excellence in Exciton Science


Funding Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 61804015, 11574181), Natural Science Foundation of Jiangsu Province (No. BK20180181), the Natural Science Foundation of Jiangsu Higher Education (No. 17KJB140001). We also acknowledge support from the ARC Centre of Excellence in Exciton Science (No. CE170100026).