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

Jiayuan Liang ¹Xin Mi ²Songhao Guo ³Hui Luo ¹Kejun Bu ¹Tonghuan Fu ¹Menglin Duan ²Yang Wang ⁴Qingyang Hu ¹Rengen Xiong ⁵Peng Qin ²Fuqiang Huang ⁶Xujie Lü⁷

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作者信息

1. Center for High Pressure Science and Technology Advanced Research(HPSTAR),Shanghai,201203,China
2. 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
3. Center for High Pressure Science and Technology Advanced Research(HPSTAR),Shanghai,201203,China;Center of Micro-Nano System,School of Information Science and Technology,Fudan University,Shanghai,200433,China
4. State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai,200050,China
5. Ordered Matter Science Research Center,Nanchang University,Nanchang,330031,China
6. State Key Lab of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,Dongchuan Road 800,Shanghai,200240,China
7. Center for High Pressure Science and Technology Advanced Research(HPSTAR),Shanghai,201203,China;Shanghai Key Laboratory of Material Frontiers Research in Extreme Environments(MFree),Shanghai Advanced Research in Physical Sciences(SHARPS),Pudong,Shanghai,201203,China
折叠

Abstract

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.

Key words

0D hybrid metal halides/Pressure-induced emission/Structure-property relationship/Huang-Rhys factor/Exciton-phonon coupling

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基金项目

National Natural Science Foundation of China(22275004)

National Natural Science Foundation of China(17N1051-0213)

National Natural Science Foundation of China(51872315)

Shanghai Science and Technology Committee(22JC1410300)

Shanghai Key Laboratory of Novel Extreme Condition Materials(22dz2260800)

Science Foundation of the Chinese Academy of Sciences()

出版年

2024

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

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