Fluorescence-enhanced Cs 4 PbBr 6 /CsPbBr 3 composites films synthesized by double-films solid phase reaction method

Fluorescence-enhanced Cs 4 PbBr 6 /CsPbBr 3 composites films synthesized by double-films solid phase reaction method

Due to indispensable ligands, polluted organic solution, or complex vapour deposition, stable CsPbBr film is hard to be prepared directly using a simple and environmentally friendly method. To improve the stability of CsPbBr film and its synthesis methods, the double-films solid phase reaction was d...

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Bibliographic Details
Published in:Luminescence (Chichester, England) Vol. 36; no. 3; pp. 631 - 641
Main Authors: Xiong, Xuhui, Liu, Hu, Wang, Wei, Gong, Jinhui, Chen, Xiangting, Zhao, Yaxuan, Tian, Tingfang, Wang, Li
Format: Journal Article
Language:English
Published: England 01-05-2021
Subjects:
Cs4PbBr6/CsPbBr3
fluorescence enhancement
self-transformation
perovskite stability
solid phase reaction
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Summary:Due to indispensable ligands, polluted organic solution, or complex vapour deposition, stable CsPbBr film is hard to be prepared directly using a simple and environmentally friendly method. To improve the stability of CsPbBr film and its synthesis methods, the double-films solid phase reaction was developed, and Cs PbBr /CsPbBr composites were designed. Although the synthesized particle had a size of 2-5 μm, much larger than that of quantum dots, in ambient conditions the composites films still showed good photoluminescence properties, with the highest photoluminescence quantum yield of 80%. It had good stability against air, temperature and humidity, and even had interesting fluorescence-enhanced phenomenon after about 4 days.
ISSN:1522-7235
1522-7243
DOI:10.1002/bio.3981