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  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synthesis and luminescence properties of (Ba1-xSrx)2SiO4-3y/2Ny:Eu2+,M3+ green phosphor for white light emitting diode

등록일
2012년 2월 16일 17시 07분 36초
접수번호
1259
발표코드
PHYS.P-485 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 25일 (수요일) 18:00~21:00
발표형식
포스터
발표분야
물리화학
저자 및
공동저자
강봉호, 강준길
충남대학교 화학과, Korea
In the present study, we therefore focused on the preparation and the luminescence properties of Eu2+-doped M2SiO2N4/3 (M = Ba and Sr) green phosphors, aiming at generating the pure green emission for use in WLEDs. The crystal structures and the luminescence properties of M2SiO2N4/3-type phosphors have not been reported up to now. In this study, we prepared Eu2+-doped Ba2SiO2N4/3 phosphor and examined the substitution effect of Ba2+ by other alkali earth ions on the luminescence properties. We found that only Sr2+ enhanced the luminescence intensity markedly. We prepared (Ba1-xSrx)2SiO4-3y/2Ny:Eu2+ in the whole range (x = 0 to 1.0) and investigated the substitution effects on the crystal structure and the luminescence properties of Ba2SiO4-3y/2Ny:Eu2+. Furthermore, we optimized the green phosphor by co-doping with three valent metal ions and varying the concentration of Eu2+. Additionally, we fabricated the phosphor-converted (pc) LEDs by casting the optimized phosphor on a blue InGaN LED chip and investigated the luminescence properties of the fabricated pc-LEDs.

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