Nanosegregation and neighbor-cation control of photoluminescence in carbidonitridosilicate phosphors

Wan Yu Huang, Fumitaka Yoshimura, Kyota Ueda, Yasuo Shimomura, Hwo Shuenn Sheu, Ting Shan Chan, Heather F. Greer, Wuzong Zhou, Shu Fen Hu, Ru Shi Liu*, J. Paul Attfield

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)


Blue, green, and yellow phosphors are obtained in the Sr 1-xY0.98+xCe0.02Si4N 7-xCx system (x=0→1). Decreases in thermal quenching barrier height with x result from a dominant neighboring-cation effect, through which the replacement of Sr2+ by Y3+ reduces the covalency of Ce-N bonding. Green emission is observed from a cation-segregated nanostructure of SrYSi4N7 and Y2Si 4N6C domains in x=0.2-0.6 samples.

Original languageEnglish
Pages (from-to)8102-8106
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number31
Publication statusPublished - 2013 Jul 29


  • carbidonitridosilicate
  • phosphors
  • photoluminescence
  • thermal quenching

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)


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