Lead-Free Halide Double Perovskite for High-Performance Photodetectors: Progress and Perspective

Xiaoyan Li; Junzhe Shi; Jianjun Chen; Zuojun Tan; Hongwei Lei

doi:10.3390/ma16124490

Lead-Free Halide Double Perovskite for High-Performance Photodetectors: Progress and Perspective

Materials (Basel). 2023 Jun 20;16(12):4490. doi: 10.3390/ma16124490.

Authors

Xiaoyan Li¹, Junzhe Shi¹, Jianjun Chen¹, Zuojun Tan¹, Hongwei Lei¹

Affiliation

¹ College of Engineering, Huazhong Agricultural University, Wuhan 430070, China.

Abstract

Lead halide perovskite has become a promising candidate for high-performance photodetectors (PDs) due to its attractive optical and electrical properties, such as high optical absorption coefficient, high carrier mobility, and long carrier diffusion length. However, the presence of highly toxic lead in these devices has limited their practical applications and even hindered their progress toward commercialization. Therefore, the scientific community has been committed to searching for low-toxic and stable perovskite-type alternative materials. Lead-free double perovskite, which is still in the preliminary stage of exploration, has achieved inspiring results in recent years. In this review, we mainly focus on two types of lead-free double perovskite based on different Pb substitution strategies, including A₂M(I)M(III)X₆ and A₂M(IV)X₆. We review the research progress and prospects of lead-free double perovskite photodetectors in the past three years. More importantly, from the perspective of optimizing the inherent defects in materials and improving device performance, we propose some feasible pathways and make an encouraging perspective for the future development of lead-free double perovskite photodetectors.

Keywords: double perovskite; lead-free; photodetector.

Publication types

Review

Grants and funding

This work was financially supported by the Fundamental Research Funds for the Central Universities (Grant No. 2662023LXPY006), the National Natural Science Foundation of China (Grant No. 11904115), and the Open Foundation of Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology (Grant No. 202103).