期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 51, 页码 18670-18675出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201911419
关键词
light-emitting diodes; manganese; metal halides; photoluminescence; 0D materials
资金
- National Natural Science Foundation of China [51722202, 51972118]
- Fundamental Research Funds for the Central Universities [D2190980]
- Guangdong Provincial Science AMP
- Technology Project [2018A050506004]
- European Research Council (ERC) under the European Union [819740]
- European Research Council (ERC) [819740] Funding Source: European Research Council (ERC)
Very little is known about the realm of solid-state metal halide compounds comprising two or more halometalate anions. Such compounds would be of great interest if their optical and electronic properties could be rationally designed. Herein, we report a new example of metal halide cluster-assembled compound (C9NH20)(9)[Pb3Br11](MnBr4)(2), featuring distinctly different anionic polyhedra, namely, a rare lead halide cluster [Pb3Br11](5-) and [MnBr4](2-). In accordance with its multinary zero-dimensional (0D) structure, this compound is found to contain two distinct emission centers, 565 nm and 528 nm, resulting from the formation of self-trapped excitons and T-4(1)-(6)A(1) transition of Mn2+ ions, respectively. Based on the high durability of (C9NH20)(9)[Pb3Br11](MnBr4)(2) upon light and heat, as well as high photoluminescence quantum yield (PLQY) of 49.8 % under 450 nm blue light excitation, white light-emitting diodes (WLEDs) are fabricated, showcasing its potential in backlight application.
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