典型文献
Optical characteristics of self-trapped excitons in 2D(iso-BA)2PbI4 perovskite crystals
文献摘要：
Organic-inorganic halide metal perovskites are an exciting class of two-dimensional(2D)materials that have sparked renewed interest for next-generation optoelectronics.In particular,the self-trapped excitons(STEs)in 2D perovskite with excellent optical properties suggest great potential in display and narrowband detection.A prerequisite of understanding STEs'properties is correct identification of the underlying interaction that leads to STEs.Here,the optical properties of STEs in(iso-BA)2PbI4 are characterized through laser spectroscopy at various temperatures and excitation intensities.It is found that STEs are related to the octahedral distortion caused by strong electron-phonon interaction.Trapping and detrapping between STEs and free excitons(FEs)are clearly observed.With the increase in temperature,STEs and FEs will gain enough energy and migrate to each other.Moreover,by characterizing the thickness-dependent and two-photon excitation emission,it is confirmed that STEs exist inside the material because of their weak absorption.Our findings are of great sig-nificance for not only the fundamental understanding of STEs,but also the design and optimization of 2D-perovskite-based electronic and optoelectronic devices.
文献关键词：
中图分类号：
作者姓名：
HAOLIN LI;XUANYU ZHANG;HAIZHEN WANG;JIAHAO YU;KEXUE LI;ZHIPENG WEI;DEHUI LI;RUI CHEN
作者机构：
State Key Laboratory of High Power Semiconductor Laser,School of Science,Changchun University of Science and Technology,Changchun 130022,China;Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen 518055,China;School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China
文献出处：
引用格式：
[1]HAOLIN LI;XUANYU ZHANG;HAIZHEN WANG;JIAHAO YU;KEXUE LI;ZHIPENG WEI;DEHUI LI;RUI CHEN-.Optical characteristics of self-trapped excitons in 2D(iso-BA)2PbI4 perovskite crystals)[J].光子学研究（英文）,2022(02):594-600
A类：
STEs
B类：
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AB值：
0.584395
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