Photoluminescence Tuning via Cation Substitution in Oxonitridosilicate Phosphors: DFT Calculations, Different Site Occupations, and Luminescence Mechanisms

Guogang Li, Chun Che Lin, Wei-Ting Chen, Maxim S. Molokeev, Victor V. Atuchin, Chang-Yang Chiang, Wuzong Zhou, Chin-Wei Wang, Wen-Hsien Li, Hwo-Shuenn Sheu, Ting-Shan Chan, Chonggeng Ma, Ru-Shi Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

254 Citations (Scopus)

Abstract

Tuning and optimizing luminescent properties of oxonitridosilicates phosphors are important for white light-emitting diode (WLED) applications. To improve the color rendering index, correlated color temperature and thermal stability of layer-structured MSi2O2N2:Eu (M = Sr, Ba) phosphors, cation substitutions have been used to adjust their luminescent properties. However, the underlying mechanisms are still unclear. In this research, a series of (Sr1-x,Ba-x)Si2O2N2:Eu (0

Original languageEnglish
Pages (from-to)2991-3001
Number of pages11
JournalChemistry of Materials
Volume26
Issue number9
DOIs
Publication statusPublished - 13 May 2014

Keywords

  • LIGHT-EMITTING-DIODES
  • HIGH-TEMPERATURE SYNTHESIS
  • LED CONVERSION PHOSPHORS
  • CRYSTAL X-RAY
  • WHITE-LIGHT
  • ORDERED DISTRIBUTION
  • GREEN PHOSPHOR
  • LAYERED OXONITRIDOSILICATE
  • REAL STRUCTURE
  • AB-INITIO

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