Enhanced Optical Performance of BaMgAl<sub>10</sub>O<sub>17</sub>

Eu<sup>2+</sup> Phosphor by a Novel Method of Carbon Coating

Journal article (2016)

Authors

L.J. Yin University of Electronic Science and Technology of China, ChemE/Product and Process Engineering - AS
Juntao Dong University of Electronic Science and Technology of China
Yinping Wang University of Electronic Science and Technology of China
Bi Zhang University of Science and Technology of China
Zheng Yang Zhou Peking University
Xian Jian University of Electronic Science and Technology of China
Mengqiang Wu University of Electronic Science and Technology of China
Xin Xu University of Science and Technology of China
J.R. van Ommen ChemE/Product and Process Engineering - AS
H.T.J.M. Hintzen RST/Fundamental Aspects of Materials and Energy - AS
Research Group
ChemE/Product and Process Engineering (AS) (TU Delft)
Copyright: © 2016 L.J. Yin, Juntao Dong, Yinping Wang, Bi Zhang, Zheng Yang Zhou, Xian Jian, Mengqiang Wu, Xin Xu, J.R. van Ommen, H.T.J.M. Hintzen
DOI: https://doi.org/10.1021/acs.jpcc.5b10215
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Published Date

06-01-2016

Language

English

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Faculty

Applied Sciences

Department

ChemE/Chemical Engineering

Research Group

ChemE/Product and Process Engineering

Abstract

Many strategies have been adopted to improve thermal degradation of phosphors. Because of the stability and high transmittance of graphene, here we report a novel method of carbon coating on BaMgAl10O17:Eu2+ (BAM) phosphor particles through chemical vapor deposition. The chemical composition, microstructure, and luminescence performance of carbon-coated BAM were characterized carefully. This coating can be controlled within 3-10 atomic layers, depending on the reaction time. Because of the decrease of surface defects and the effective weakening effect of oxidizing Eu2+ to Eu3+ after carbon coating, different layer numbers showed an obvious effect on the optical properties of carbon-coated BAM. Carbon-coated BAM phosphors had higher emission intensity and better oxidation resistance at high temperature than uncoated BAM phosphors. These results indicate that the method of carbon coating on phosphor particles is a promising way to improve the luminescence properties of other phosphors used in lighting and display devices.