Performance enhancement of organic light-emitting diode by heat treatment

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

8 Scopus Citations
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Author(s)

  • F. L. Wong
  • H. Y. Sun
  • S. W. Tong
  • M. Y. Chan
  • S. T. Lee

Detail(s)

Original languageEnglish
Pages (from-to)110-114
Journal / PublicationJournal of Crystal Growth
Volume288
Issue number1
Publication statusPublished - 2 Feb 2006

Conference

TitleInternational Conference on Materials for Advanced Technologies
Period4 - 8 July 2005

Abstract

The effects of post-fabrication heat treatments on the performance and stability of organic light-emitting diodes (OLEDs) were studied in standard NPB/Alq3 devices. Electroluminescence (EL) performance, growth of dark spots, and operation stability of the devices with different heat-treatments were measured and monitored. It was found that optimum thermal treatment can slow down the growth of dark-spot and luminescence degradation in the OLEDs. Substantial increase in operation lifetime was also observed in the heat-treated samples. Heating at 70 °C for 7.5 min increases the half-brightness lifetime from 6400 h (untreated device) to over 15,000 h.

Research Area(s)

  • A1. Treatment, A3. Thermal evaporation, B3. Organic light-emitting diodes

Citation Format(s)

Performance enhancement of organic light-emitting diode by heat treatment. / Wong, F. L.; Sun, H. Y.; Tong, S. W. et al.
In: Journal of Crystal Growth, Vol. 288, No. 1, 02.02.2006, p. 110-114.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review