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  • 02월 19일 23시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제119회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Fabrication of Low-temperature-sintered Phosphor-in-Glass to realize the white-LED package

등록일
2017년 2월 16일 14시 45분 15초
접수번호
4418
발표코드
MAT.P-481 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 21일 (금요일) 13:00~14:30
발표형식
포스터
발표분야
재료화학
저자 및
공동저자
윤희창, 도영락1,*
국민대학교 화학과, Korea
1국민대학교 생명나노화학과, Korea
We dispersed YAG:Ce3+ phosphor with Sn-P-F based glass frit as light emitting diode (LED) inorganic encapsulant. We can obtain the phosphor in glass (PiG) based down-converted white LED (DC-WLED) with 210 ~ 250 ℃ low sintering temperature which can decrease the thermal defect of commercial phosphor. We realized these fabricated yellow emissive PiGs to package the cup-type white LEDs. These PiGs are expected to prevent the Sn-P-F based glass encapsulant from turning yellowing, causing the decrease of luminous efficacy (LE). The white LED realized the luminous efficacy of 110 lm/W (EQE = 0.303), respectively, at ~ 4500 K. Furthermore, it shows high temperature resistance in comparison of commercial silicone resin in temperature dependence test. The photoluminescence properties of phosphor were measured using Xe lamp and a spectrophotometer. The images of PiG based WLED were obtained by scanning electron microscopy (SEM). The PiG based WLED were measured using electroluminescence (EL) in an integrated sphere with applied current of 50 mA to 700 mA.

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