Pressure-triggered intense natural white emission via controllable distortions of antimony chloride dimers

被引：5

作者：

You, Zhaojiang ^{[1
]}

Xu, Bin ^{[2
]}

Meng, Xinmiao ^{[1
]}

Wu, Min ^{[1
]}

Li, Aisen ^{[1
]}

Li, Lei ^{[1
]}

Chen, Jun ^{[3
]}

Li, Qian ^{[1
]}

Wang, Kai ^{[1
]}

机构：

[1] Liaocheng Univ, Sch Phys Sci & Informat Technol, Shandong Key Lab Opt Commun Sci & Technol, Liaocheng 252000, Shandong, Peoples R China

[2] Southern Univ Sci & Technol SUSTech, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China

[3] Taishan Univ, Sch Phys Sci & Elect Engn, Taishan 271021, Shandong, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2024年 / 493卷

基金：

中国国家自然科学基金;

关键词：

Metal -halide perovskite; Octahedral dimer; Self -trapped exciton emission; Diamond anvil cell; LUMINESCENCE; TRANSITION; HALIDES;

D O I：

10.1016/j.cej.2024.151597

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Zero-dimensional (0D) hybrid metal halides (HMHs), featured with unique self-trapped exciton (STE) emissions, are emerging photoluminescence (PL) materials for photoelectronic applications. Compared with metal-halogen monomers, dimeric units in 0D HMHs possess more structural flexibility and less spatial confinement of excitons, creating new opportunities for PL engineering. Herein, high pressure is employed on 0D (C3H12N2)2Sb2Cl10 to controllably distort inter- and intra-octahedral structures within [Sb2Cl10]4- dimers. Intense natural white emission is achieved with dramatically increased photoluminescence quantum yield from less than approximate to 1% to 74.2 %. The high-pressure emission of (C3H12N2)2Sb2Cl10 is proven to originate from the STE recombination from triplet states with varied emission equilibrium, as well as the promoted excitonic trapping with restrained nonradiative recombination. This work offers valuable insights into the structure effects on STE emission and the transition mechanisms of metal-halogen dimers, which are crucial for developing novel metal halides for illumination.

引用

页数：7

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