Phosphorescence White Organic Light-Emitting Diodes with Single Emitting Layer Based on Isoquinolinefluorene-Carbazole Containing Host Academic Article uri icon

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abstract

  • We have demonstrated a stable phosphorescent white organic light-emitting diodes (WOLEDs) using an orange emitter, Bis(5-benzoyl-2-(4-fluorophenyl)pyridinato-C,N) iridium(III)acetylacetonate [(Bz4Fppy)2Ir(III)acac] doped into a newly synthesized blue host material, 2-(carbazol-9-yl)-7-(isoquinolin-1-yl)-9,9-diethylfluorene (CzFliq). When 1 wt.% (Bz4Fppy)2Ir(III)acac was doped into emitting layer, it was realized an improved EL performance and a pure white color in the OLED. The optimum WOLED showed maximum values as a luminous efficiency of 10.14 cd/A, a power efficiency of 10.24 Im/W, a peak external quantum efficiency 4.07%, and Commission Internationale de L'Eclairage coordinates of (0.34, 0.39) at 8 V.

authors

  • Koo, Ja Ryong
  • Lee, Seok Jae
  • Hyung, Gun Woo
  • Kim, Bo Young
  • Shin, Hyun Su
  • Lee, Kum Hee
  • Yoon, Seung Soo
  • Kim, Woo Young
  • Kim, Young Kwan

publication date

  • March 1, 2013