Enhanced brightness and efficiency of organic light-emitting diodes with an LiF in the Alq3

Young Min Kim, Joo Won Lee, Jae Hoon Jung, Kyeong Kap Paek, Man Young Sung, Jai Kyeong Kim, Byeong Kwon Ju

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Highly efficient and bright organic light-emitting diodes have been realized by inserting a thin insulating lithium fluoride (LiF) layer in the tris-(8-hydroxyquinoline) aluminum (Alq3) with conventional organic layers. By comparing the performances of newly devised devices as a function of the position of the LiF in the Alq3 layer, the authors propose the optimal position of the LiF in the Alq3 layer. Experimental results show that the efficiency and brightness of the newly devised device with LiF in the Alq3 layer were seven times higher than that without LiF in the Alq3 layer.

Original languageEnglish
Pages (from-to)558-560
Number of pages3
JournalIEEE Electron Device Letters
Volume27
Issue number7
DOIs
Publication statusPublished - 2006 Jul 1

Keywords

  • Carrier injection
  • Lithium fluoride (LiF)
  • Organic light-emitting diodes (OLEDs)
  • Recombination efficiency

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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