Temperature dependent electrical properties in ITO/TPD/Alq3/Al organic light-emitting diodes

Sang Keol Kim, Dong Hoe Chung, Ho Sik Lee, Hyun Nam Cho, Jong Wook Park, Jin Woong Hong, Tae Wan Kim

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)

Abstract

Temperature dependence of current-voltage-luminance characteristics in organic light-emitting diodes are studied in a device structure of ITO/TPD/Alq3Al to understand an electrical conduction mechanism. The current-voltage-luminance characteristics are measured in the temperature range of 8K-300K, and analyzed them using a hopping model with exponential trap distribution and Fowler-Nordheim tunneling. At low temperatures below 150K, the Fowler-Nordheim tunneling conduction mechanism is dominant And we have obtained a zero field barrier height to be about 0.6-0.8eV.

Original languageEnglish
Pages (from-to)1041-1042
Number of pages2
JournalSynthetic Metals
Volume137
Issue number1-3
DOIs
Publication statusPublished - 4 Apr 2003
EventICSM 2002 - Shanghai, China
Duration: 29 Jun 20025 Jul 2002

Keywords

  • Conduction mechanism
  • Fowler-Nordheim tunneling
  • Hopping model
  • Organic light-emitting diodes

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