卤化物
钙钛矿(结构)
材料科学
兴奋剂
发光二极管
光电效应
光电子学
离子
纳米技术
无机化学
化学
结晶学
有机化学
作者
Liukang Bian,Fengren Cao,Liang Li
出处
期刊:Small
[Wiley]
日期:2023-05-05
卷期号:19 (36)
被引量:7
标识
DOI:10.1002/smll.202302700
摘要
Owing to their excellent properties, lead halide perovskites have attracted extensive attention in the photoelectric field. Presently, the certified power conversion efficiency of perovskite solar cells has reached 25.7%, the specific detectivity of perovskite photodetectors has exceeded 1014 Jones, and the external quantum efficiency of perovskite-based light-emitting diode has exceeded 26%. However, their practical applications are limited by the inherent instability induced by the perovskite structure due to moisture, heat, and light. Therefore, one of the widely used strategies to address the issue is to replace partial ions of the perovskites with ions of smaller radii to shorten the bond length between halides and metal cations, improving the bond energy and enhancing the perovskite stability. Particularly, the B-site cation in the perovskite structure can affect the size of eight cubic octahedrons and their gap. However, the X-site can only affect four such voids. This review comprehensively summarizes the recent progress in B-site ion-doping strategies for lead halide perovskites and provides some perspectives for further performance improvements.
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