Thermal annealing of a polymer light-emitting diode (PLED) is shown to result in a remarkable improvement in the long-term stability of the device. The annealing for such a PLED has to be layer-specific in that the annealing should be carried out for the layer with the lowest glass transition temperature to harvest the benefits of annealing. Annealing of this key layer, which is usually the emitting layer, can enhance the thermal stability of the device. The best half-life is obtained at an annealing temperature above the of emitting polymer. It is shown that the annealing of the emitting polymer layer results in a more than an order of magnitude increase in the half-life, in spite of a decrease in the efficiency of the device as the annealing temperature increases.
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16 June 2003
Research Article|
June 16 2003
Effect of thermal annealing on the lifetime of polymer light-emitting diodes Available to Purchase
Jinook Kim;
Jinook Kim
Research and Development Center, LG.Philips LCD, Anyang-shi, Gyonggi-Do, 431-080, Korea
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Jaeyoon Lee;
Jaeyoon Lee
Research and Development Center, LG.Philips LCD, Anyang-shi, Gyonggi-Do, 431-080, Korea
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C. W. Han;
C. W. Han
Research and Development Center, LG.Philips LCD, Anyang-shi, Gyonggi-Do, 431-080, Korea
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N. Y. Lee;
N. Y. Lee
Research and Development Center, LG.Philips LCD, Anyang-shi, Gyonggi-Do, 431-080, Korea
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In-Jae Chung
In-Jae Chung
Research and Development Center, LG.Philips LCD, Anyang-shi, Gyonggi-Do, 431-080, Korea
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Jinook Kim
Research and Development Center, LG.Philips LCD, Anyang-shi, Gyonggi-Do, 431-080, Korea
Jaeyoon Lee
Research and Development Center, LG.Philips LCD, Anyang-shi, Gyonggi-Do, 431-080, Korea
C. W. Han
Research and Development Center, LG.Philips LCD, Anyang-shi, Gyonggi-Do, 431-080, Korea
N. Y. Lee
Research and Development Center, LG.Philips LCD, Anyang-shi, Gyonggi-Do, 431-080, Korea
In-Jae Chung
Research and Development Center, LG.Philips LCD, Anyang-shi, Gyonggi-Do, 431-080, Korea
Appl. Phys. Lett. 82, 4238–4240 (2003)
Article history
Received:
February 21 2003
Accepted:
April 24 2003
Citation
Jinook Kim, Jaeyoon Lee, C. W. Han, N. Y. Lee, In-Jae Chung; Effect of thermal annealing on the lifetime of polymer light-emitting diodes. Appl. Phys. Lett. 16 June 2003; 82 (24): 4238–4240. https://doi.org/10.1063/1.1582359
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