Electric field-induced quenching of photoluminescence in a blend of electron and hole transporting polyfluorene
| Autor: | Donal D. C. Bradley, Yanbing Hou, M. Koeberg |
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| Rok vydání: | 2003 |
| Předmět: |
Materials science
Photoluminescence Mechanical Engineering Exciton Metals and Alloys Electron Condensed Matter Physics Photochemistry Electronic Optical and Magnetic Materials Polyfluorene chemistry.chemical_compound chemistry Mechanics of Materials Excited state Electric field Materials Chemistry Polymer blend Thin film |
| Zdroj: | Synthetic Metals. 139:859-862 |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/s0379-6779(03)00269-8 |
| Popis: | Photoluminescence (PL) from thin films of a blend of poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT) and poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)-diphenylamine) (TFB) was studied under the influence of an applied electric field. The results show that electric field-induced quenching of photoluminescence (EFIQP) in the blend films is enhanced significantly compared to films of F8BT and TFB on their own. The enhancement of photoluminescence quenching is attributed to a facilitation of exciton dissociation due to the favourable interchain separation of electrons and holes between the two components of the blend. The PL EFIQP happens in both TFB and F8BT excited states. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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