Electroluminescent properties of color/luminance tunable organic light emitting diodes and their lifetime enhancement with encapsulation
| Autor: | Jen-Lien Lin, Chen-Ming Chen, Mark O. Liu, Tsung-Eong Hsieh, Ming-Hua Chung, Fuh-Shyang Juang, Huai-En Hsieh, Yu-Sheng Tsai, Bohr-Ran Huang |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
chemistry.chemical_classification
Materials science business.industry Mechanical Engineering Lithium fluoride Semiconductor device Polymer Electroluminescence Condensed Matter Physics Luminance law.invention chemistry.chemical_compound chemistry Mechanics of Materials law OLED Optoelectronics General Materials Science business Luminescence Light-emitting diode |
| Zdroj: | Materials Science and Engineering: B. 153:100-105 |
| ISSN: | 0921-5107 |
| DOI: | 10.1016/j.mseb.2008.10.028 |
| Popis: | In this work, color/luminance tunable organic light emitting diodes (OLEDs) (ITO glass/naphthyl phenyl benzidine (NPB; 80 nm)/4,4′-bis(diphenylvinylenyl)-biphenyl (ADS082BE; 35 nm)/1,3-bis[2-(2,2′-bipyridine-6-yl)-1,3,4-oxadiazo-5-yl]benzene (Bpy-OXD; 20 nm)/tris-[8-hydroxy-quinoline]aluminum (Alq 3 ; 50 nm)/lithium fluoride (LiF; 3 nm)/aluminum (Al, 80 nm)) with low turn-on voltage (3 V) and high luminance (4850 cd/m 2 at 9 V) have been successfully manufactured. The experimental results reveal that their electroluminescent properties (e.g. hue, luminescent intensity, etc.) can be modulated by the manipulation for the layer thickness of NPB/ADS082BE/Bpy-OXD and the applied voltages. In addition, we have also demonstrated lab-made UV-curable silicone-acrylate encapsulating resin exhibits excellent gas barrier capability so that the half-lifetimes of OLEDs reach 98 h whereas those without encapsulation are only 9 h. |
| Databáze: | OpenAIRE |
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