New Green Phosphor (Ba1.2Ca0.8-xEux)SiO4 for White-Light-Emitting Diode
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概要
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A novel promising green phosphor, (Ba1.2Ca0.8-xEux)SiO4, has been developed for low- color-temperature solid-state lighting when used in combination with near-ultraviolet light-emitting diodes. It has a unique crystal structure (hexagonal, T phase) with five different cation sites among all possible (Ba,Sr,Ca)2SiO4:Eu2+ compounds. It exhibits a broad absorption band in the near-ultraviolet region of approximately 400 nm and an intense broad green emission. It shows a slightly higher thermal quenching temperature (175 °C) than conventional yellow (Ba,Sr,Ca)2SiO4:Eu2+ phosphors (150 °C).
- 2010-02-25
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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Kim Jongsu
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of 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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Kwangwon Park
Department of Image System Science and Engineering, Pukyong National University, Busan 608-739, Republic of Korea
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Kung Patrick
Department of Electrical and Computer Engineering, University of Alabama, Tuscaloosa, AL 35487-0286, U.S.A.
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Seongsin M.
Department of Electrical and Computer Engineering, University of Alabama, Tuscaloosa, AL 35487-0286, U.S.A.
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