Excellent Brightness with Shortening Lifetime of Textured Zn2SiO4:Mn2+ Phosphor Films on Quartz Glass
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概要
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Green-emissive textured Zn2SiO4:Mn2+ phosphor films were fabricated by the thermal diffusion of ZnO:Mn on quartz glass. The Zn2SiO4:Mn2+ phosphor films became textured along several hexagonal directions and their chemical composition was continuously graded at the interface. The decay time of Mn2+ was as short as 4.4 ms, and the optical transition probability of the films defined as the inverse of decay time showed a strong correlation with film texture degree as a function of annealing temperature. The brightest Zn2SiO4:Mn2+ film showed a photoluminescent brightness as high as 65% compared with a commercial Zn2SiO4:Mn2+ phosphor powder screen and a maximum absolute transparency of 70%. These excellent optical properties are explained by the combination of the unique textured structure and continuous grading of the Zn2SiO4:Mn2+ chemical composition at the interface.
- 2010-04-25
著者
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Patrick Kung
Department of Electrical and Computer Engineering, University of Alabama, Tuscaloosa, AL 35487-0286, U.S.A.
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Jongsu Kim
Department of Image System Science and Engineering, Pukyong National University, Busan 608-739, Korea
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Park Jehong
Department of Image System Science and Engineering, Pukyong National University, Busan 608-739, Korea
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Park Kwangwon
Department of Image System Science and Engineering, Pukyong National University, Busan 608-739, Korea
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Lee Jaebum
Department of Image System Science and Engineering, Pukyong National University, Busan 608-739, Korea
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Seongsin Margaret
Department of Electrical and Computer Engineering, University of Alabama, Tuscaloosa, AL 35487-0286, U.S.A.
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Jehong Park
Department of Image System Science and Engineering, Pukyong National University, Busan 608-739, Korea
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Kwangwon Park
Department of Image System Science and Engineering, Pukyong National University, Busan 608-739, Korea
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Jaebum Lee
Department of Image System Science and Engineering, Pukyong National University, Busan 608-739, Korea
関連論文
- Excellent Brightness with Shortening Lifetime of Textured Zn2SiO4:Mn2+ Phosphor Films on Quartz Glass
- New Green Phosphor (Ba1.2Ca0.8-xEux)SiO4 for White-Light-Emitting Diode