重组
物理
极化子
解耦(概率)
自发辐射
无辐射复合
化学物理
电子
联轴节(管道)
载流子
凝聚态物理
半导体
半导体材料
光电子学
光学
量子力学
化学
材料科学
工程类
控制工程
基因
冶金
生物化学
激光器
作者
Abhishek Maiti,Amlan J. Pal
标识
DOI:10.1088/1361-6633/ac4be9
摘要
In methylammonium lead iodide (MAPbI3), a slow recombination process of photogenerated carriers has often been considered to be the most intriguing property of the material resulting in high-efficiency perovskite solar cells. In spite of intense research over a decade or so, a complete understanding of carrier recombination dynamics in MAPbI3has remained inconclusive. In this regard, several microscopic processes have been proposed so far in order to explain the slow recombination pathways (both radiative and non-radiative), such as the existence of shallow defects, a weak electron-phonon coupling, presence of ferroelectric domains, screening of band-edge charges through the formation of polarons, occurrence of the Rashba splitting in the band(s), and photon-recycling in the material. Based on the up-to-date findings, we have critically assessed each of these proposals/models to shed light on the origin of a slow recombination process in MAPbI3. In this review, we have presented the interplay between the mechanisms and our views/perspectives in determining the likely processes, which may dictate the recombination dynamics in the material. We have also deliberated on their interdependences in decoupling contributions of different recombination processes.
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