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Chemically Tailoring the Dopant Emission in Manganese‐Doped CsPbCl 3 Perovskite Nanocrystals
Author(s) -
Das Adhikari Samrat,
Dutta Sumit K.,
Dutta Anirban,
Guria Amit K.,
Pradhan Narayan
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201703863
Subject(s) - dopant , nanocrystal , doping , reagent , chalcogenide , manganese , perovskite (structure) , materials science , ion , quantum dot , nanotechnology , nanomaterials , inorganic chemistry , chemical engineering , chemistry , optoelectronics , crystallography , organic chemistry , engineering , metallurgy
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 (RNH 3 Cl) as a promoting reagent, precise controlled doping of Mn II in CsPbCl 3 perovskite nanocrystals is reported. Simply, by changing the amount of RNH 3 Cl, the Mn incorporation and subsequent tuning in the excitonic as well as Mn d–d emission intensities are tailored. Investigations suggested that RNH 3 Cl 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.