Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 11, Issue 10, Pages 10059-10067Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b19002
Keywords
perovskite; CsPbBr3; optical materials; luminescence; LED
Funding
- National Key Research and Development Program of China [2018YFB0406704]
- National Natural Science Foundation of China [51572065]
- Zhejiang Provincial Natural Science Foundation of China [LR15E020001]
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Currently, metal halide perovskite nanocrystals have been extensively explored due to their unique optoelectronic properties and wide application prospects. In the present work, a facile grinding method is developed to prepare whole-family APbX(3) (A = MA, FA, and Cs; X = Cl, Br, and I) perovskite nanocrystals. This strategy alleviates the harsh synthesis conditions of precursor dissolution, atmosphere protection, and high temperature. Impressively, the as-prepared perovskite nanocrystals are evidenced to have halogen-rich surfaces and yield visible full-spectral emissions with maximal photoluminescence quantum yield up to 92% and excellent stability. Additionally, the grinding method can be extended to synthesize widely concerned Mn2+-doped CsPbCl3 nanocrystals with dual-modal emissions of both excitons and dopants. As a proof-of-concept experiment, the present perovskite nanocrystals are demonstrated to be applicable as blue/green/red color converters in UV-excitable white-light-emitting diodes.
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