초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 09월 10일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제124회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Three-Package White LED Backlighting Applications Using Narrow-Band SrMgAl10O17:Eu,Mn Green Phosphors and Photoluminescence Properties

2019년 8월 28일 16시 17분 34초
INOR.P-112 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 17일 (목요일) 11:00~12:30
Inorganic Chemistry
저자 및
Heejoon Kang, Keyong Nam Lee1, Young rag Do*
Department of Bionano Chemistry, Kookmin University, Korea
1Department of Chemistry, Kookmin University, Korea
BaMgAl10O17 (BAM) phosphors have long been used for plasma display panels (PDPs) due to the good quality of their blue emission. However, due to their use of the harmful vacuum ultraviolet (VUV) wavelength range, they are no longer used. In this study, the cation was changed to the Sr2+ ion using a BAM phosphor and the excitation light was enhanced in addition to the red shift of the excitation spectrum through Eu2+ and Mn2+ co-doped SAM phosphors, allowing the use of a near-blue LED. The PL emission spectrum of the optimized SAM:Eu,Mn phosphor peaks at 518 nm at a full-width-at-half-maximum (FWHM) of 26 nm under LED excitation at 432 nm. Through this result, we fabricated three-package down-converted white-LEDs (DC-WLEDs) with a 432 nm blue LED and K2SiF6:Mn4+ (KSF:Mn) red phosphors. The color gamut area of a color-filtered RGB triangle of DC-WLEDs incorporated with the optimum SAM:Eu,Mn green and KSF:Mn red phosphors is enlarged by 114% relative to that of the NTSC standard system in the CIE 1931 color space. The luminous efficacy of our DC-WLED was measured and found to exceed 90 lm/W at 20 mA.