Deep red electrophosphorescent organic light-emitting diodes based on new iridium complexes

  • Gong, Doo-Won (Dept. of Information Display, Hongik University, Center for Organic Materials and Information Devices, Hongik University) ;
  • Kim, Jun-Ho (Center for Organic Materials and Information Devices, Hongik University, Dept. of Electronic Engineering, Hongik University) ;
  • Lee, Kum-Hee (Dept. of Chemistry, Sungkyunkwan University) ;
  • Yoon, Seung-Soo (Dept. of Chemistry, Sungkyunkwan University) ;
  • Kim, Young-Kwan (Dept. of Information Display, Hongik University, Center for Organic Materials and Information Devices, Hongik University)
  • Published : 2006.08.22

Abstract

New iridium complex was synthesized and demonstrated a deep red light emission in organic light-emitting diodes (OLEDs). The maximum luminance of 8320 cd/m2 at 15 V and the luminance efficiency of 2.5 cd/A at 20 mA/cm2 were achieved. The peak wavelength of the electroluminescence was at 626 nm with the CIE coordinates of (0.69, 0.30), and the device also showed a stable color chromaticity with various voltages.

Keywords