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White Electroluminescent Devices Using Polymer Blends

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Authors
Hwang, Do-Hoon; Lee, Ji-Hoon; Lee, Jeong-Ik; Lee, Changhee; Kim, Yong-Bae
Issue Date
2003
Publisher
Taylor & Francis
Citation
Mol. Cryst. Liq. Cryst., 405, 127
Keywords
electroluminescencepolymers blendswhite light-emitting
Abstract
White light-emitting devices were fabricated using the blends of blue, green, red emissive polymers of poly[9,9-(2'-ethylhexyl)fluorene] (PEHF), poly(9,9-dioctylfluorene-2,7-vinylene) (POFV), poly(2-(3',7'-dimethyloctyloxy)-5-methoxy-1,4-phenylene-1-cyanovinylene) (CN-PPV) and poly(2-(2'-ethylhexyloxy)-5-methoxy-1,4-phenylenevinylene) (MEH-PPV). Inefficient energy transfers between the blue polymer and the green or the red polymer, which was observed in PL spectra of the blend films, provides a good advantage to get a white light emission due to better blend ratio controllability. The EL devices were fabricated with ITO/PEDOT/blend/Ca/Al configuration and good white light-emission was obtained for a certain blend ratio. The light-emission was observable from 4 V and the maximum brightness of 400 cd/m2was obtained with the device.
ISSN
1542-1406 (Print)
1563-5287 (Online)
Language
English
URI
http://hdl.handle.net/10371/13732
DOI
https://doi.org/10.1080/15421400390263956
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Journal Papers (저널논문_전기·정보공학부)
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