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Poly(3,4-ethylenedioxythiophene) Derived from Poly(ionic liquid) for the Use as Hole-Injecting Material in Organic Light-Emitting Diodes

Authors
Kim, TaeYoungSuh, MinwonKwon, Soon JaeLee, Tae HeeKim, Jong EunLee, You JongKim, Joo HyungHong, MunPyoSuh, Kwang S.
Issue Date
1-9월-2009
Publisher
WILEY-V C H VERLAG GMBH
Keywords
hole-injection layer; long-term stability; organic light emitting diodes; PEDOT; poly(ionic liquid)
Citation
MACROMOLECULAR RAPID COMMUNICATIONS, v.30, no.17, pp.1477 - 1482
Indexed
SCIE
SCOPUS
Journal Title
MACROMOLECULAR RAPID COMMUNICATIONS
Volume
30
Number
17
Start Page
1477
End Page
1482
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/119332
DOI
10.1002/marc.200900234
ISSN
1022-1336
Abstract
We report that poly(3,4-ethylenedioxythiophene) derived from poly(ionic liquid) (PEDOT:PIL) constitutes a unique polymeric hole-injecting material capable of improving device lifetime in organic light-emitting diodes (OLEDs). Imidazolium-based poly(ionic liquid)s were engineered to impart non-acidic and non-aqueous properties to PEDOT without compromising any other properties of PEDOT. A fluorescent OLED was fabricated using PEDOT:PIL as a hole-injection layer and subjected to a performance evaluation test. In comparison with a control device using a conventional PEDOT-based material, the device with PEDOT:PIL was found to achieve a significant improvement in terms of device lifetime. This improvement was attributed to a lower indium content in the PEDOT:PIL layer, which can be also interpreted as the effective protection characteristics of PEDOT:PIL for indium extraction from the electrodes.
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Graduate School > Department of Applied Physics > 1. Journal Articles
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