期刊
DALTON TRANSACTIONS
卷 47, 期 29, 页码 9845-9849出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8dt01720d
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资金
- Zhejiang Provincial Natural Science Foundation of China [LR15E020001]
- National Natural Science Foundation of China [51572065]
- 151 Talent's Projects in the Second Level of Zhejiang Province
The preparation of CsPbX3 nanoplatelets and the investigation of their optical properties have been rarely reported. Herein, the successful development of all-inorganic CsPbX3 (X = Cl, Br, or I) perovskite quantum dots has been achieved and their unique optical and electrical properties are discussed. A pre-dissolution assisted solvothermal reaction was developed to synthesize ultrathin (similar to 3 nm) CsPbBr3 nanoplatelets with strong exciton absorption, with a 0.41 eV blue-shifted emission relative to that of CsPbBr3 nanocrystals and a high quantum yield of 28%. Anion exchange allowed the variation of the halogen content of the nanoplatelets and allowed them to retain their shape and size and achieve multi-color emission.
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