White organic light-emitting diodes based on a combined electromer and monomer emission in doubly-doped polymers

Ling Chuan Meng, Zhi Dong Lou*, Sheng Yi Yang, Yan Bing Hou, Feng Teng, Xiao Jun Liu, Yun Bai Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

We report on white organic light-emitting diodes (WOLEDs) based on polyvinylcarbazole (PVK) doped with 1,1-bis((di-4-tolylamino)phenyl)cyclohexane (TAPC) and perylene, and investigate the luminescence mechanism of the devices. The chromaticity of light emission can be tuned by adjusting the concentration of the dopants. White light with the Commission Internationale de L'Eclairage (CIE) coordinates of (0.33, 0.34) is achieved by mixing the yellow electromer emission of TAPC and the blue monomer emission of perylene from the device ITO/PVK: TAPC: perylene (100:9:1 in wt.) (100 nm)/tris-(8-hydroxyquinoline aluminum (Alq 3) (10 nm)/Al. The device exhibits a maximal luminance of 3727 cd/m 2 and a current efficiency of 2 cd/A.

Original languageEnglish
Article number088504
JournalChinese Physics B
Volume21
Issue number8
DOIs
Publication statusPublished - Aug 2012

Keywords

  • Commission Internationale de LEclairage (CIE)
  • electromer emission
  • monomer emission
  • white organic light-emitting diodes

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