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

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Blue, green, and yellow phosphors are obtained in the Sr1−xY0.98+xCe0.02Si4N7−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[BOND]N bonding. Green emission is observed from a cation-segregated nanostructure of SrYSi4N7 and Y2Si4N6C domains in x=0.2–0.6 samples.

Original languageEnglish
Pages (from-to)8102-8106
JournalAngewandte Chemie International Edition
Volume52
Issue number31
DOIs
Publication statusPublished - 29 Jul 2013

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