钙钛矿(结构)
载流子
材料科学
光电效应
兴奋剂
化学物理
声子
放松(心理学)
光电子学
Crystal(编程语言)
超快激光光谱学
光谱学
凝聚态物理
化学
结晶学
心理学
社会心理学
物理
量子力学
计算机科学
程序设计语言
作者
Luchao Du,Xiaoping Shi,Menghan Duan,Ying Shi
出处
期刊:Materials
[MDPI AG]
日期:2022-10-08
卷期号:15 (19): 6984-6984
被引量:1
摘要
All-inorganic perovskite materials (CsPbX3) have attracted increasing attention due to their excellent photoelectric properties and stable physical and chemical properties. The dynamics of charge carriers affect the photoelectric conversion efficiencies of perovskite materials. Regulating carrier dynamics by changing pressure is interesting with respect to revealing the key microphysical processes involved. Here, ultrafast spectroscopy combined with high-pressure diamond anvil cell technology was used to study the generation and transfer of photoinduced carriers of a Mn-doped inorganic perovskite CsPbBr3 material under pressure. Three components were obtained and assigned to thermal carrier relaxation, optical phonon–acoustic phonon scattering and Auger recombination. The time constants of the three components changed under the applied pressures. Our experimental results show that pressure can affect the crystal structure of Mn-doped CsPbBr3 to regulate carrier dynamics. The use of metal doping not only reduces the content of toxic substances but also improves the photoelectric properties of perovskite materials. We hope that our study can provide dynamic experimental support for the exploration of new photoelectric materials.
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