Nanosegregation and Neighbor-Cation Control of Photoluminescence in Carbidonitridosilicate Phosphors

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N bonding. Green emission...

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Published inAngewandte Chemie International Edition Vol. 52; no. 31; pp. 8102 - 8106
Main Authors Huang, Wan-Yu, Yoshimura, Fumitaka, Ueda, Kyota, Shimomura, Yasuo, Sheu, Hwo-Shuenn, Chan, Ting-Shan, Greer, Heather F., Zhou, Wuzong, Hu, Shu-Fen, Liu, Ru-Shi, Attfield, J. Paul
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 29.07.2013
WILEY‐VCH Verlag
Wiley Subscription Services, Inc
EditionInternational ed. in English
Subjects
Bonding
carbidonitridosilicate
Cations
Covalence
Emission
Nanostructure
Phosphors
Photoluminescence
Quenching
thermal quenching
thermal quenching
photoluminescence
phosphors
carbidonitridosilicate
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Summary: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N bonding. Green emission is observed from a cation‐segregated nanostructure of SrYSi4N7 and Y2Si4N6C domains in x=0.2–0.6 samples.
Bibliography:ArticleID:ANIE201302494
Leverhulme Trust
National Science Council of the Republic of China, Taiwan - No. NSC 101-2113M-002-014-MY3; No. NSC 101-2923M-007-003
istex:A40000BCB64586C28A8871E067A3559BC5266FD7
EPSRC
ark:/67375/WNG-2MCPK08S-2
This work was supported by EPSRC, the Leverhulme Trust, and the Royal Society U.K., and the National Science Council of the Republic of China, Taiwan (Contract Nos. NSC 101-2113M-002-014-MY3 and NSC 101-2923M-007-003) and the Mitsubishi Chemical Group, Science and Technology Research Center, Inc. We are grateful to Chia-Han Chen for assistance in fitting data and preparing figures, and Tsung-Han Lin for providing an ultrafast personal computer in this work.
Royal Society U.K.
This work was supported by EPSRC, the Leverhulme Trust, and the Royal Society U.K., and the National Science Council of the Republic of China, Taiwan (Contract Nos. NSC 101‐2113M‐002‐014‐MY3 and NSC 101‐2923M‐007‐003) and the Mitsubishi Chemical Group, Science and Technology Research Center, Inc. We are grateful to Chia‐Han Chen for assistance in fitting data and preparing figures, and Tsung‐Han Lin for providing an ultrafast personal computer in this work.
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201302494