PL and EL properties of oligo(p-phenylene vinylene) (OPPV) derivatives and their applications in organic light-emitting diodes (OLED)
| Autor: | Laurence Vignau, A. Chaieb, Guillaume Wantz, Christine Dagron-Lartigau, Ross Brown, N. Huby, Jeanne François |
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| Rok vydání: | 2008 |
| Předmět: |
Photoluminescence
Materials science Organic Chemistry Poly(p-phenylene vinylene) 02 engineering and technology Electroluminescence 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Inorganic Chemistry chemistry.chemical_compound chemistry Phenylene Nitro Alkoxy group OLED Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology Spectroscopy Tetrahydrofuran |
| Zdroj: | Optical Materials. 31:68-74 |
| ISSN: | 0925-3467 |
| Popis: | This paper reports the photoluminescence properties and the performance enhancement of organic light-emitting diodes (OLEDs) of a series of well-defined p-conjugated rigid rod oligomers analogous to poly(p-phenylenevinylene) (PPV). They are based on benzene-1,4- bis(phenylene vinylene) (OPPV) with electron-withdrawing (nitro) or electron-donating (methyl and dimethylamino) substituents in para-position of the terminal rings of the molecule. Substitution with methoxy and a long alkoxy group (hexadecyloxy) in 2,5-positions is also examined. Photoluminescence spectra obtained from films are discussed and compared to those previously reported in tetrahydrofuran solutions. OPPV oligomers were then used as emissive material in OLEDs and the I-V-L characteristics of the devices are presented. The results show that donating groups placed on the OPPV backbone increases the performances of the devices. |
| Databáze: | OpenAIRE |
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