Pressure-induced emission in 0D metal halide(EATMP)SbBr5 by regulating exciton-phonon coupling

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外文摘要：Zero-dimensional(0D)hybrid metal halides are considered as promising light-emitting materials due to their unique broadband emission from self-trapped excitons(STEs).Despite substantial progress in the development of these materials,the photoluminescence quantum yields(PLQY)of hybrid Sb-Br analogs have not fully realized the ca-pabilities of these materials,necessitating a better fundamental understanding of the structure-property relation-ship.Here,we have achieved a pressure-induced emission in 0D(EATMP)SbBr5(EATMP=(2-aminoethyl)trimethylphosphanium)and the underlying mechanisms are investigated using in situ experimental characterization and first-principles calculations.The pressure-induced reduction in the overlap between the STE states and ground states(GSs)results in the suppression of phonon-assisted non-radiative decay.The photoluminescence(PL)evo-lution is systematically demonstrated to be controlled by the pressure-regulated exciton-phonon coupling,which can be quantified using Huang-Rhys factorS.Through detailed studies of the S-PLQY relation in a series of 0D hybrid antimony halides,we establish a quantitative structure-property relationship that regulating S value toward 21 leads to the optimized emission.This work not only sheds light on pressure-induced emission in 0D hybrid metal halides but also provides valuable insights into the design principles for enhancing the PLQY in this class of materials.

外文关键词：

0D hybrid metal halidesPressure-induced emissionStructure-property relationshipHuang-Rhys factorExciton-phonon coupling

作者：

Jiayuan Liang、Xin Mi、Songhao Guo、Hui Luo、Kejun Bu、Tonghuan Fu、Menglin Duan、Yang Wang、Qingyang Hu、Rengen Xiong、Peng Qin、Fuqiang Huang、Xujie Lü

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作者单位：

Center for High Pressure Science and Technology Advanced Research(HPSTAR),Shanghai,201203,China

State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai,200050,China

Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China

Center of Micro-Nano System,School of Information Science and Technology,Fudan University,Shanghai,200433,China

Ordered Matter Science Research Center,Nanchang University,Nanchang,330031,China

State Key Lab of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,Dongchuan Road 800,Shanghai,200240,China

Shanghai Key Laboratory of Material Frontiers Research in Extreme Environments(MFree),Shanghai Advanced Research in Physical Sciences(SHARPS),Pudong,Shanghai,201203,China

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基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaShanghai Science and Technology CommitteeShanghai Key Laboratory of Novel Extreme Condition MaterialsScience Foundation of the Chinese Academy of Sciences

项目编号：

2227500417N1051-02135187231522JC141030022dz2260800

出版年：

2024

DOI：

10.1016/j.cjsc.2024.100333

结构化学

中国化学会中国科学院福建物质结构研究所

结构化学

影响因子：0.44

ISSN：0254-5861

年,卷(期)：2024.43(7)