Enhancing thermal stability and photoluminescence of red-emitting Sr2Si5N8∶Eu phosphors via boron doping

Hailong Yuan ¹Zhifeng Huang ²Jianwen Zhang ¹Ziqian Yin ¹Xiangyu Lu ¹Fei Chen ¹Qiang Shen¹

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作者信息

1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China
2. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China;Department of Materials Science and Engineering,Monash University,Melbourne,VIC 3800,Australia
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Abstract

Surface passivation is a common method to improve the resistance of thermal degradation of nitride phosphors.However,such a surface passivation generally needs extra processes and decreases the photo-luminescence property of the phosphors.In this work,both the thermal stability and photoluminescence property of a red phosphor Sr2Si5N8∶Eu are improved through the addition of BN.The influence of B on the crystal structure and the valence state of active ions was analyzed by experimental characterization.First-principles calculations were applied to analyze the formation energy of N vacancies,which influ-ence the resistance of thermal degradation.Finally,combining with experimental characterization and calculations,the enhancing mechanism of thermal stability and photoluminescence by B was studied.

Key words

Nitride phosphors/Thermal degradation/Red-emitting/First-principles calculations/Photoluminescence

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基金项目

National Natural Science Foundation of China(51872217)

National Natural Science Foundation of China(51472188)

National Natural Science Foundation of China(51521001)

Natural Research Funds of Hubei Province(2016CFB583)

Fundamental Research Funds for the Central Universities in China()

"111"Project(B13035)

出版年

2021

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量34

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