南方科技大学知识苑(SUSTech KC): Pressure-Induced Free Exciton Emission in a Quasi-Zero-Dimensional Hybrid Lead Halide

题名	Pressure-Induced Free Exciton Emission in a Quasi-Zero-Dimensional Hybrid Lead Halide
作者	Han, Jiang1 ; Li, Yawen1 ; Shen, Pengfei 2; Li, Qian 3; Liu, Yulian1 ; Wei, Yi1 ; Zhang, Peijie1 ; Quan, Zewei1
通讯作者	Quan, Zewei
发表日期	2023-11-01
DOI	10.1002/anie.202316348
发表期刊	ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 影响因子和分区
ISSN	1433-7851
EISSN	1521-3773
卷号	63 期号:1
摘要	["Structural dimensionality and electronic dimensionality play a crucial role in determining the type of excitonic emission in hybrid metal halides (HMHs). It is important but challenging to achieve free exciton (FE) emission in zero-dimensional (0D) HMHs based on the control over the electronic dimensionality. In this work, a quasi-0D HMH (C7H15N2Br)2PbBr4 with localized electronic dimensionality is prepared as a prototype model. With increasing pressure onto (C7H15N2Br)2PbBr4, the broad and weak self-trapped exciton (STE) emission at ambient conditions is considerably enhanced before 3.6 GPa, which originates from more distorted [PbBr4]2- seesaw units upon compression. Notably, a narrow FE emission in (C7H15N2Br)2PbBr4 appears at 3.6 GPa, and then this FE emission is gradually strengthened up to 8.4 GPa. High pressure structural characterizations reveal that anisotropic contraction of (C7H15N2Br)2PbBr4 results in a noticeable reduction in the distance between adjacent [PbBr4]2- seesaw units, as well as an obvious enhancement of crystal stiffness. Consequently, the electronic connectivity in (C7H15N2Br)2PbBr4 is sufficiently promoted above 3.6 GPa, which is also supported with theoretical calculations. The elevation of electronic connectivity and enhanced stiffness together lead to pressure-induced FE emission and subsequent emission enhancement in quasi-0D (C7H15N2Br)2PbBr4.","The electronic connectivity of quasi-zero-dimensional hybrid metal halide (C7H15N2Br)2PbBr4 is significantly elevated upon compression, leading to the generation and intensity enhancement of free exciton emission.+image"]
关键词	Electronic Dimensionality Free Exciton Emission Hybrid Metal Halide Photophysics Quasi-Zero-Dimensional Materials
相关链接	[来源记录]
收录类别	SCI ; EI
语种	英语
重要成果	NI论文
学校署名	第一 ; 通讯
资助项目	National Natural Science Foundation of China[52072166] ; National Natural Science Foundation of China (NSFC)[2021ZDZX2049] ; Guangdong Education Department["RCJC202106091044441068","KCXFZ20211020174805008"]
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:001110149000001
出版者	WILEY-V C H VERLAG GMBH
ESI学科分类	CHEMISTRY
Scopus记录号	2-s2.0-85177883735
来源库	Web of Science
引用统计	被引频次[WOS]：6
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/628998
专题	理学院_化学系
作者单位	1.Southern Univ Sci & Technol SUSTech, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China 2.Shenzhen Technol Univ, Coll Engn Phys, Shenzhen 518118, Guangdong, Peoples R China 3.Liaocheng Univ, Sch Phys Sci & Informat Technol, Shandong Key Lab Opt Commun Sci & Technol, Liaocheng 252059, Shandong, Peoples R China
第一作者单位	化学系
通讯作者单位	化学系
第一作者的第一单位	化学系
推荐引用方式 GB/T 7714	Han, Jiang,Li, Yawen,Shen, Pengfei,et al. Pressure-Induced Free Exciton Emission in a Quasi-Zero-Dimensional Hybrid Lead Halide[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2023,63(1).
APA	Han, Jiang.,Li, Yawen.,Shen, Pengfei.,Li, Qian.,Liu, Yulian.,...&Quan, Zewei.(2023).Pressure-Induced Free Exciton Emission in a Quasi-Zero-Dimensional Hybrid Lead Halide.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,63(1).
MLA	Han, Jiang,et al."Pressure-Induced Free Exciton Emission in a Quasi-Zero-Dimensional Hybrid Lead Halide".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 63.1(2023).