Efficient flexible polymer light emitting diodes with conducting polymer anodes.

Autor: Huang, J., Wang, X., deMello, A. J., deMello, J. C., Bradley, D. D. C.
Zdroj: Journal of Materials Chemistry; Aug2007, Vol. 17 Issue 33, p3551-3554, 4p
Abstrakt: We report polymer light emitting diodes fabricated on flexible poly(ethyleneterephthalate) substrates coated with a layer of poly(3,4-ethylene-dioxythiophene) : poly(styrenesulfonate) that was lithographically patterned to define the anode structure. A blend of poly(9,9-dioctylfluorene-co-benzothiadiazole) and poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine) was then spin-coated on top as the emissive layer and the device was completed by vacuum deposition of a LiF/Al bilayer cathode. The resulting yellow light emitting diodes had typical peak power and current efficiencies of 13.7 lm W−1 and 8.8 cd A−1 respectively, which compare well with values for similar devices fabricated on ITO-coated rigid glass substrates. A maximum luminance in excess of 7300 cd m−2 was achieved. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index