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Fluorescence‐enhanced Cs 4 PbBr 6 /CsPbBr 3 composites films synthesized by double‐films solid phase reaction method
Author(s) -
Xiong Xuhui,
Liu Hu,
Wang Wei,
Gong Jinhui,
Chen Xiangting,
Zhao Yaxuan,
Tian Tingfang,
Wang Li
Publication year - 2021
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.3981
Subject(s) - photoluminescence , quantum yield , materials science , fluorescence , phase (matter) , yield (engineering) , particle (ecology) , chemical engineering , deposition (geology) , composite material , particle size , chemistry , optoelectronics , organic chemistry , optics , paleontology , physics , oceanography , engineering , sediment , biology , geology
Due to indispensable ligands, polluted organic solution, or complex vapour deposition, stable CsPbBr 3 film is hard to be prepared directly using a simple and environmentally friendly method. To improve the stability of CsPbBr 3 film and its synthesis methods, the double‐films solid phase reaction was developed, and Cs 4 PbBr 6 /CsPbBr 3 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.
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