High efficiency pure white organic light-emitting diodes using a diphenylaminofluorene-based blue fluorescent material

  • Kyoung Soo Yook
  • , Soon Ok Jeon
  • , Jun Yeob Lee
  • , Kum Hee Lee
  • , Young Soo Kwon
  • , Seung Soo Yoon
  • , Ji Hwan Yoon

Research output: Contribution to journalArticlepeer-review

Abstract

High efficiency pure white organic light-emitting diodes (WOLEDs) were developed using a highly efficient diphenylaminofluorene-based deep blue fluorescent material (DAF). A high quantum efficiency of 7.1% with color coordinates of (0.15, 0.18) were obtained from the DAF-doped blue device, which was then combined with phosphorescent red/green devices. A mixed interlayer was used to control the color coordinates and charge balance in the emitting layer of the WOLEDs. The pure white hybrid WOLEDs showed a high quantum efficiency of 12.3%.

Original languageEnglish
Pages (from-to)1378-1381
Number of pages4
JournalOrganic Electronics
Volume10
Issue number7
DOIs
StatePublished - Nov 2009
Externally publishedYes

Keywords

  • Fluorescent blue material
  • High quantum efficiency
  • Hybrid white organic light-emitting diodes

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