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White polymer light-emitting devices from ternary-polymer blend with concentration gradient
Cited 39 time in
Web of Science
Cited 40 time in Scopus
- Authors
- Issue Date
- 2005-02
- Publisher
- Elsevier BV
- Citation
- Chemical Physics Letters, Vol.403 No.4-6, pp.293-297
- Abstract
- We have fabricated a white polymer light-emitting-diode bilayer structure that contains a ternary polymer blend. The first layer of poly(9-vinylcarbazole) acts as an energy donor and electron blocker, and the second layer comprising an immiscible polymer blend of two light-emitting polymers, poly(9,9'-dihexylfluorene-2,7-divinylene-m-phenylenevinylene-stat-p-phenylenevinylene) and poly(2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylenevinylene), emits light. The emissive white color of the device was observed to be practically independent of the driving voltage (near CIE coordinate; 0.33, 0.33). In addition, it shows greatly enhanced luminous efficiency compared to a ternary blended white light-emitting-diode. (C) 2005 Elsevier B.V. All rights reserved.
- ISSN
- 0009-2614
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