Issue 24, 2018

Influence of Eu-substitution on luminescent CH3NH3PbBr3 quantum dots

Abstract

We report a series of Eu-substituted methylammonium lead tribromide quantum dots (MAPb1−xEuxBr3 QDs). The crystallinity of these QDs increases with increasing Eu content, while there is only a small change in the lattice constant, and the morphology of the MAPb1−xEuxBr3 QDs is unaffected by the Eu content. This demonstrates that Eu is a suitable element for substituting Pb while retaining the original crystal structure. We observe blue photoluminescence (PL) consistent with Eu2+, which, at high Eu content (x = 0.3), contributes luminescence intensity equal to the green PL of unsubstituted MAPbBr3 QDs. As Eu is a less toxic substitute for Pb, that also provides blue luminescence, MAPb1−xEuxBr3 QDs may prove to be a valuable optoelectronic material.

Graphical abstract: Influence of Eu-substitution on luminescent CH3NH3PbBr3 quantum dots

Supplementary files

Article information

Article type
Paper
Submitted
27 Feb 2018
Accepted
02 Jun 2018
First published
06 Jun 2018

Nanoscale, 2018,10, 11452-11459

Influence of Eu-substitution on luminescent CH3NH3PbBr3 quantum dots

L. Liu, J. Li and J. A. McLeod, Nanoscale, 2018, 10, 11452 DOI: 10.1039/C8NR01656A

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