한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
권호 표지

Efficient orange-red OLED using a new DCM derivative as a doping molecule

  • Hwang, Do-Hoon (Dept. of Applied Chemistry, Kumoh National Institute of Technology) ;
  • Lee, Jong-Don (Dept. of Applied Chemistry, Kumoh National Institute of Technology) ;
  • Lee, Moon-Jae (Department of Physics, Inha University) ;
  • Lee, Chang-Hee (School of Electrical Engineering and Computer Science, Seoul National University)
  • Published : 2004.08.23
Download PDF
⟨ Previous Next ⟩

Abstract

A new DCM derivative containing the phenoxazine moiety (DCPXZ) has been synthesized for use as a red fluorescent dye molecule in organic light-emitting diodes (OLEDs). The photoluminescence and electroluminescence properties of DCPXZ were examined. The maximum photoluminescence of DCPXZ in chloroform solution ($10^{-5}$ mol) was observed at 616 nm. EL devices were fabricated with the structure ITO/PEDOT-PSS/Cu-PC(15nm)/${\alpha}$-NPD(45nm)/$Alq_3$:DCPXZ(30nm)/$Alq_3$(30nm)/LiF(0.5nm)/Al. The maximum EL emission for the 2.0% DCPXZ-doped device was at 608 nm with CIE coordinates (0.57, 0.42). The EL device exhibited a maximum brightness of 15,000 cd/$m^2$ at 19.4 V and a power efficiency of 1.04 lm/W at a luminance of 100 cd/$m^2$.

Keywords