Autor: |
H.Y. Sun, F.L. Wong, Michael C. Y. Chan, Chun-Sing Lee, Shi Wun Tong, Shuit-Tong Lee |
Rok vydání: |
2006 |
Předmět: |
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Zdroj: |
Journal of Crystal Growth. 288:110-114 |
ISSN: |
0022-0248 |
Popis: |
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. |
Databáze: |
OpenAIRE |
Externí odkaz: |
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