Journal
CHEMICAL ENGINEERING JOURNAL
Volume 382, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2019.122868
Keywords
Ni-doped; Perovskite; Nanocrystals; Glass; DFT
Categories
Funding
- National Natural Science Foundation of China [51672192, 51872207]
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All-inorganic perovskite nanocrystals (NCs) have become a new generation of low-cost semiconductor luminescent materials for optoelectronic applications due to their excellent optical properties. Prepared perovskite NCs undergo different ion doping and surface modification, which makes the NCs photo-luminescence quantum yield (PLQY) basically uniform. However, stability of perovskite NCs solution in the environment has always been an important factor restricting its practical application. Here, we used melt-quenching method to prepare a series of different Ni2+ doped CsPbBr3 NCs glass. Through experimental characterization and DFT calculation it is found that the entry of Ni2+ into the NCs lattice can eliminate the structural defects of NCs and improve the order of the perovskite lattice. Ni2+ doped perovskite NCs have strong band edge emission and high quantum yield (up to 84.3%).
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