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Characteristics of organic electroluminescent devices using polypyrrole conducting layer and undoped conjugated polymer layer
- Issue Date
- 1-Mar-2000
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- electroluminescence; ITO roughness; polypyrrole; PECCP; Alq(3)
- Citation
- THIN SOLID FILMS, v.363, no.1-2, pp.259 - 262
- Journal Title
- THIN SOLID FILMS
- Volume
- 363
- Number
- 1-2
- Start Page
- 259
- End Page
- 262
- ISSN
- 0040-6090
- Abstract
- We observed EL properties based on poly(3,6-N-2-ethylhexyl carbazolyl cyanoterephthalidene) (PECCP) and PECCP/Alq(3) emitting material devices with doped PPy conducting layer (>5 S/cm) on top of rough ITO (surface resistance: less than 7 Omega/square). The ITO/PECCP/Alq(3)/Al device shows relatively high luminance efficiency, (0.17 1m/W), because of the PECCP layer. The PPy conducting layer is working on improving I-V characteristics of PECCP/Alq3 small molecule EML and PECCP EML system on ITO which has a rough surface of more than 1000 Angstrom peak to peak level. In the PECCP EML device, when PPy is layered on top of ITO, the turn-on voltage is lowered from 15 to 9 V. (C) 2000 Elsevier Science S.A. All rights reserved.
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Related Researcher
- Kim, Tae Wan
- Engineering (Applied Science)