Effect of Post Annealing on Performance of Polymer Light-Emitting Devices

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概要

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• 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 3.04 cd/A. Both high luminescence and efficiency were greatly enhanced after PLEDs were annealed at 120°C.

• 2005-10-15

著者

• TU Ming-Lung

  Institute of Microelectronics & Department of Electrical Engineering, National Cheng Kung University

• Su Yan-kuin

  Institute Of Electro-optical Science And Engineering Advance Optoelectronics Technology Center Natio

• Wen Ten-chin

  Department Of Chemical Engineering National Cheng Kung University

• Lu Wei-Chung

  Institute of Electro-Optical Science and Engineering, National Cheng Kung University, Tainan 70101, Taiwan, R.O.C.

• Lu Wei-Chung

  Institute of Electro-Optical Science and Engineering, National Cheng Kung University, Tainan, 70101, Taiwan, R.O.C.

• Yang Henglong

  Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei, 106, Taiwan, R.O.C.

• Kuo Tzung-Fang

  Institute of Electro-Optical Science and Engineering, National Cheng Kung University, Tainan, 70101, Taiwan, R.O.C.

• Wen Ten-Chin

  Department of Chemical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan, R.O.C.

• Tu Ming-Lung

  Institute of Microelectronics and Department of Electrical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan, R.O.C.

• Su Yan-Kuin

  Institute of Microelectronics and Department of Electrical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan, R.O.C.

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