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High-performance polymer light emitting diodes with interface-engineered graphene anodes

Cited 20 time in Web of Science Cited 24 time in Scopus
Authors
Ha, Jaeheung; Park, Subeom; Kim, Donghyun; Ryu, Jaechul; Lee, Changhee; Hong, Byung Hee; Hong, Yongtaek
Issue Date
2013-09
Publisher
Elsevier B.V.
Citation
Organic Electronics: physics, materials, applications, Vol.14 No.9, pp.2324-2330
Keywords
Polymer light emitting diodes (PLEDs)GrapheneTransfer length method (TLM)Work functionChemical vapor deposition (CVD)
Abstract
Recently, graphene-based organic light emitting diodes (OLEDs) were successfully demonstrated using graphene as anodes. However, the graphene electrodes have not been utilized for polymer light emitting diodes (PLEDs) yet, although the simpler device structure and the solution-based fabrication process of PLEDs are expected to be more advantageous in terms of time and cost. Here we demonstrate high-performance polymer light emitting diodes (PLEDs) with simple two-layer structures using interface-engineered single-layer graphene films as anodes. The single-layer graphene synthesized by chemical vapor deposition methods was transferred onto a glass substrate utilizing an elastic stamp, and its work function was engineered by varying the duration and the power of ultraviolet ozone (UVO) treatment. Thus, we were able to optimize the contact between silver electrodes and the graphene anodes, leading to the considerable enhancement of light-emitting performance. (C) 2013 Elsevier B.V. All rights reserved.
ISSN
1566-1199
Language
English
URI
https://hdl.handle.net/10371/90961
DOI
https://doi.org/10.1016/j.orgel.2013.05.033
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College of Natural Sciences (자연과학대학)Dept. of Chemistry (화학부)Journal Papers (저널논문_화학부)
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