期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 30, 页码 8746-8750出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201703863
关键词
CsPbCl3; d-d emissions; doped perovskites; Mn:CsPbCl3; platelets
资金
- DST of India [SJF/CSA-01/2010-11, SR/NM/NS-1383/2014]
- CSIR, India
Doping in perovskite nanocrystals adopts different mechanistic approach in comparison to widely established doping in chalcogenide quantum dots. The fast formation of perovskites makes the dopant insertions more competitive and challenging. Introducing alkylamine hydrochloride (RNH3Cl) as a promoting reagent, precise controlled doping of Mn-II in CsPbCl3 perovskite nanocrystals is reported. Simply, by changing the amount of RNH3Cl, the Mn incorporation and subsequent tuning in the excitonic as well as Mn d-d emission intensities are tailored. Investigations suggested that RNH3Cl acted as the chlorinating source, controlled the size, and also helps in increasing the number of particles. This provided more opportunity for Mn ions to take part in reaction and occupied the appropriate lattice positions. Carrying out several reactions with varying reaction parameters, the doping conditions are optimized and the role of the promoting reagent for both doped and undoped systems are compared.
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