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Blue-emitting and self-assembled thinner perovskite CsPbBr3 nanoplates: Synthesis and formation mechanism

Abstract

Low dimensional semiconductor nanomaterials have a great promise for a variety of applications due to their size-dependent and excellent optoelectronic properties. In this work, we developed a strategy to synthesize uniform and very thin CsPbBr3 perovskite nanoplates (NPls) by introducing additional metal bromides. The CsPbBr3 NPls, self-assembled to a face-to-face stacked state, had a thickness of 4.4 nm (equal to only 2 monolayers, 2 MLs) and showed a maximum emission at 437 nm and a narrow FWHM of 14 nm. The formation mechanism of the CsPbBr3 NPls by adding FeBr3 was ascribed to the constrained growth of CsPbBr3 nanocubes when the surface of Cs+ ions was substituted by the protonated oleylammonium from the byproduct OLA-HBr.

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Supplementary files

Article information


Submitted
27 Dec 2019
Accepted
25 Mar 2020
First published
25 Mar 2020

Nanoscale, 2020, Accepted Manuscript
Article type
Paper

Blue-emitting and self-assembled thinner perovskite CsPbBr3 nanoplates: Synthesis and formation mechanism

X. Xiao, Y. Li and R. Xie, Nanoscale, 2020, Accepted Manuscript , DOI: 10.1039/C9NR10885H

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