期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 6, 期 33, 页码 8990-8998出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8tc03139h
关键词
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资金
- National Natural Science Foundation of China [51572065, 51702306]
- Zhejiang Provincial Natural Science Foundation of China [LR15E020001, LY18E020006]
- 151 Talent's Projects in the Second Level of Zhejiang Province
All inorganic CsPbX3 (X = Cl, Br, I) perovskite quantum dots have attracted extreme attention due to their excellent optical performance. Unfortunately, heavy usage of the toxic Pb element is still a serious problem that needs to be solved. In the present work, Mn-doped CsPbCl3 nanocrystals are successfully prepared via a facile solvothermal reaction for the first time. A high Cs-to-Pb feeding ratio is necessary to achieve pure cubic perovskite phase and the incorporation of Mn dopants into the CsPbCl3 host is highly related to the Mn-to-Pb feeding ratio. Importantly, it is demonstrated that Mn-doped CsPbCl3 NCs synthesized by the solvothermal method have better stability than those prepared by traditional hot injection. To finely adjust the bandgap of CsPbCl3 NCs, Cl-to-Br anion exchange is used to fabricate Mn-doped CsPb(Cl/Br)(3) NCs with tunable multi-color luminescence. Finally, the as-prepared Mn-doped CsPb(Cl/Br)(3) products are demonstrated to be applicable as color converters for constructing white light-emitting diodes and optical thermometric medium for accurate temperature sensing.
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