luminescent Characteristics of $Ca_{1-x}$Sr$_{x}$S:CuCl Thin-film Electroluminescent(TFEL) Device

Ca$_{1-x}$Sr$_{x}$S:CuCl 박막 전계발광소자의 발광 특성

  • 이순석 (충북대학교 컴퓨터정보통신연구소) ;
  • 김미혜 (충북대학교 컴퓨터정보통신연구소)
  • Published : 2002.09.01

Abstract

The $Ca_{1-x}$Sr$_{x}$S:CuCl TFEL devices were fabricated by electron-beam deposition system and luminescent characteristics of the TFEL devices were studied. The SrS and CaS powders were mixed to form $Ca_{1-x}$Sr$_{x}$S host materials and 0.2 at% of CuCl was added as the activator. The luminance(lao) and peak emission wavelength of CaS:CuCl TFEL devices were 9.5 cd/m$^2$ and 492 nm, respectively. The luminance(L$_{30}$) and peak emission wavelength of SrS:CuCl TFEL devices were 633 cd/m$^2$ and 500 nm, respectively. It seems that the addition of CaS into the SrS host material generates blue shift of the EL emission characteristics but reduces the luminance and the luminous efficiency of the $Ca_{1-x}$Sr$_{x}$S:CuCl TFEL devices drastically.

Keywords

전계발광;형광체 모체;발광중심체;평판디스플레이