Work-Function Engineering of Graphene Electrodes by Self-Assembled Monolayers for High-Performance Organic Field-Effect Transistors
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- Title
- Work-Function Engineering of Graphene Electrodes by Self-Assembled Monolayers for High-Performance Organic Field-Effect Transistors
- Authors
- Park, J; Lee, WH; Huh, S; Sim, SH; Kim, SB; CHO, KIL WON; Hong, BH; Kim, KS
- Date Issued
- 2011-04-21
- Publisher
- AMER CHEMICAL SOC
- Abstract
- We have devised a method to optimize the performance of organic field-effect transistors (OFETs) by controlling the work functions of graphene electrodes by functionalizing the surface of SiO(2) substrates with self-assembled monolayers (SAMs). The electron-donating NH(2)-terminated SAMs induce strong n-doping in graphene, whereas the CH(3)-terminated SAMs neutralize the p-doping induced by SiO(2) substrates, resulting in considerable changes in the work functions of graphene electrodes. This approach was successfully utilized to optimize electrical properties of graphene field-effect transistors and organic electronic devices using graphene electrodes. Considering the patternability and robustness of SAMs, this method would find numerous applications in graphene-based organic electronics and optoelectronic devices such as organic light-emitting diodes and organic photovoltaic devices.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/17444
- DOI
- 10.1021/JZ200265W
- ISSN
- 1948-7185
- Article Type
- Article
- Citation
- JOURNAL OF PHYSICAL CHEMISTRY LETTERS, vol. 2, no. 8, page. 841 - 845, 2011-04-21
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