High efficiency red electrophosphorescent polymer light-emitting diode
| Autor: | Tzung-Fang Guo, Ten-Chin Wen, Sung-Nien Hsieh, Chien-Hong Cheng, Chin-Yu Chang |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
chemistry.chemical_classification
Fabrication Materials science Dopant business.industry Analytical chemistry General Physics and Astronomy chemistry.chemical_element Trapping Polymer Electroluminescence chemistry Optoelectronics Charge carrier Iridium Physical and Theoretical Chemistry Phosphorescence business |
| Zdroj: | Chemical Physics Letters. 418:50-53 |
| ISSN: | 0009-2614 |
| DOI: | 10.1016/j.cplett.2005.10.002 |
| Popis: | This work reports on the fabrication of an efficient polymer light-emitting device by applying iridium (Ir) complex, dibenzo[ f , h ]-quinoxaline iridium (acetylacetonate) [Ir(DBQ) 2 (acac)], as the phosphorescent dopant, poly(9-vinylcarbazole) as the matrix layer, and 2-(4-biphenylyl)-5-(4- tert -butyl-phenyl)-(1,3,4-oxadiazole) as the electron transport material. The trapping of charge carriers at the Ir(DBQ) 2 (acac) dopant sites dominates the electroluminescence (EL) of the devices. The device emits red electrophosphorescence centered at 610 nm, exclusively from the Ir dopant and an EL efficiency of 8.5 cd/A (1287 cd/m 2 ) biased at 14.5 mA/cm 2 . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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