Enhanced Optical Performance of BaMgAl10O17:Eu2+ Phosphor by a Novel Method of Carbon Coating | Zendy

Liangjun Yin | Zendy; Juntao Dong | Zendy; Yin-Ping Wang | Zendy; Bi Zhang | Zendy; Zheng-Yang Zhou | Zendy; Xian Jian | Zendy; Mengqiang Wu | Zendy; Xin Xu | Zendy; J. Ruud van Ommen | Zendy; H.T. Hintzen | Zendy

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Enhanced Optical Performance of BaMgAl₁₀O₁₇:Eu²⁺ Phosphor by a Novel Method of Carbon Coating

Author(s) -

Liangjun Yin,

Juntao Dong,

Yin-Ping Wang,

Bi Zhang,

Zheng-Yang Zhou,

Xian Jian,

Mengqiang Wu,

Xin Xu,

J. Ruud van Ommen,

H.T. Hintzen

Publication year - 2016

Publication title -

the journal of physical chemistry c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.401

H-Index - 289

eISSN - 1932-7455

pISSN - 1932-7447

DOI - 10.1021/acs.jpcc.5b10215

Subject(s) - phosphor , materials science , coating , luminescence , carbon fibers , oxidizing agent , chemical vapor deposition , microstructure , graphene , chemical engineering , layer (electronics) , thermal stability , optoelectronics , composite material , nanotechnology , chemistry , organic chemistry , composite number , engineering

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.