Effect of post annealing on performance of polymer light-emitting devices

Ming Lung Tu, Yan Kuin Su, Wei Chung Lu, Henglong Yang, Tzung Fang Kuo, Ten Chin Wen

Research output: Contribution to journalArticle

10 Citations (Scopus)


A high luminescence and a high efficiency could be obtained for polymer light emitting diodes (PLEDs) after post annealing at an appropriate temperature. Calcium was used as the cathode material of light emitting diodes based on 2,3-dibutoxy-1,4-poly(phenylene vinylene) (DB-PPV). Ca diffused into polymer and degraded the performance after PLEDs were post annealed at various temperatures except for 120°C. The luminescence of PLEDs reached 5343 cd/m2 after annealing at 120°C. The corresponding efficiency under the condition was 3.04cd/A. Both high luminescence and efficiency were greatly enhanced after PLEDs were annealed at 120°C.

Original languageEnglish
Pages (from-to)7482-7484
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number10
Publication statusPublished - 2005 Oct 11

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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