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Journal of Materials Science
Published in: Journal of Materials Science 12/2017

23-02-2017 | Original Paper

Green synthesis of white-light-emitting ZnSe:Eu2+, Mn2+ quantum dots in an aqueous solution

Authors: Rongfang Wang, Xingming Wei, Ronghuan Qin, Pingfang Tao, Liqin Qin, Haichuang Liang

Published in: Journal of Materials Science | Issue 12/2017

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Abstract

High-quality ZnSe:Eu, Mn quantum dots (QDs) with white light emitting were synthesized via a green preparation method in an aqueous solution using thioglycolic acid as a stabilizing agent. The composition of the QDs could be flexibly controlled by varying the amount of Eu or Mn cation. The effects of reflux time and Eu2+ ion dopant concentration on the luminescence properties were systematically investigated. The obtained QDs were characterized by photoluminescence spectrometry, X-ray powder diffraction, and high-resolution transmission electron microscopy. The proposed method formed cubic ZnSe:Mn2+, Eu2+ QDs with the maximum emission peak at 460 and 580 nm. In the optimal condition, the quantum yields of ZnSe:Mn2+, Eu2+ QDs could reach 27.68%. The CIE color coordinates were (0.328, 0.334), which agreed with those of pure white light (0.33, 0.33). The results verified that the ZnSe:Mn2+, Eu2+ QDs exhibited potential in light-emitting diode applications.
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Metadata
Title
Green synthesis of white-light-emitting ZnSe:Eu2+, Mn2+ quantum dots in an aqueous solution
Authors
Rongfang Wang
Xingming Wei
Ronghuan Qin
Pingfang Tao
Liqin Qin
Haichuang Liang
Publication date
23-02-2017
Publisher
Springer US
Published in
Journal of Materials Science / Issue 12/2017
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-017-0932-x

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