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Efficient multilayer white polymer light-emitting diodes with aluminum cathodes.
- Source :
-
Applied Physics Letters . 5/14/2007, Vol. 90 Issue 20, p203513. 3p. 1 Black and White Photograph, 1 Diagram, 2 Graphs. - Publication Year :
- 2007
-
Abstract
- Efficient multilayer white polymer light-emitting diodes (WPLEDs) with aluminum cathodes are fabricated. The multilayer structure is composed of a water soluble hole-injection layer, a toluene-soluble emissive layer, and an alcohol-soluble emissive layer. The polarity difference of the solvents used for spin coating these polymers allows for realization of the multilayer polymer structure. The recombination zone confined at the interface of the two emissive polymers avoids exciton quenching by electrodes, and white emission is realized by harvesting photons emitted from the two emissive polymers. A maximum luminous efficiency of 16.9 cd/A and a power efficiency of 11.1 lm/W are achieved for this WPLED. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 90
- Issue :
- 20
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 25210023
- Full Text :
- https://doi.org/10.1063/1.2741125