White polymer light-emitting devices from ternary-polymer blend with concentration gradient
SCIE
SCOPUS
- Title
- White polymer light-emitting devices from ternary-polymer blend with concentration gradient
- Authors
- Park, JH; Lee, TW; Kim, YC; Park, OO; Kim, JK
- Date Issued
- 2005-02-25
- Publisher
- ELSEVIER SCIENCE BV
- 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.
- Keywords
- ELECTROLUMINESCENT DEVICES; ENERGY-TRANSFER; PHOSPHORESCENT; EMISSION; DIODES; ELECTROPHOSPHORESCENCE; IRIDIUM; LAYER
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/28873
- DOI
- 10.1016/J.CPLETT.200
- ISSN
- 0009-2614
- Article Type
- Article
- Citation
- CHEMICAL PHYSICS LETTERS, vol. 403, no. 4-6, page. 293 - 297, 2005-02-25
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