Superior thermally-stable narrow-band green emitter from Mn2+-doped zero thermal expansion (ZTE) material

Wei Wang, Hang Yang, Meiqian Fu, Xinyang Zhang, Mengyu Guan, Yi Wei, Chun Che Lin, Guogang Li

研究成果: 雜誌貢獻文章同行評審

1 引文 斯高帕斯(Scopus)

摘要

Thermal quenching is still a pivotal challenge for phosphor materials in white light emitting diodes lighting applications. Herein, we propose an effective strategy to design a near zero-thermal-quenching green emission in zero-thermal-expanding Zn4B6O13 host based on unique 3D isotropic cage structure. The integrated emission intensity of Zn4B6O13:Mn2+ could maintain 103% of initial intensity at 150 °C and 98% at 250 °C under blue light excitation. During the low-frequency vibrations, the unchanged bonds and angles induce the zero thermal expansion, and the unaffected lattice and coordination environment contribute the nearly unchanged emission intensity during the heating process. In addition, an efficient self-reduction of activators in the studied system is ascribed to vacancy and interstitial oxygen defects act as donors to provide electrons. This work initiates a novel strategy to construct thermally-stable and self-reductive phosphors for multiple optical applications.

原文英語
文章編號128979
期刊Chemical Engineering Journal
415
DOIs
出版狀態已發佈 - 七月 1 2021
對外發佈

ASJC Scopus subject areas

  • 化學 (全部)
  • 環境化學
  • 化學工程 (全部)
  • 工業與製造工程

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