Use of cross-linkable polyfluorene in the fabrication of multilayer polyfluorene-based light-emitting diodes with improved efficiency
作者： A. Charas , H. Alves , L. Alcácer , J. Morgado
DOI: 10.1063/1.2360243
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摘要: The authors report the use of a cross-linkable polyfluorene to fabricate multilayer light-emitting diodes (LEDs), thereby avoiding restriction combine polymeric solutions in different solvents. In particular, we find that for LEDs fabricated with hole-injection layer poly(3,4-ethylenedioxythiophene) doped polystyrene sulfonic acid (PEDOT), magnesium cathodes and poly(9,9-dioctylfluorene-alt-benzothiadiazole) (F8BT), as emissive layer, its electroluminescence efficiency increases from 2to5.5cd∕A upon insertion cross-linked between PEDOT F8BT. This increase is attributed an improvement charge carrier balance within F8BT reduction exciton quenching at interface.
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