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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.1
- 수록면
- 141 - 148 (8page)
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In this study, the eff ect of alkyl chain length in amine-based compounds on the work function of graphene was investigated. The graphene was synthesized by the chemical vapor deposition method. The graphene layers were functionalized byamine-based groups using a simple spin-coating method. The amine-based compounds were composed of phenyl amineand methyl-, ethyl-, propyl-, n / t -butyl-, and octyl-phenyl amine groups. Materials were confi rmed by X-ray photoelectronspectroscopy to show the C and N bonding. The work function of the doped graphene layers decreased because of the eff ectof the doping agents. Among the doped graphene samples, t -butyl-phenyl amine functionalized graphene achieved the lowestwork function of 3.89 eV (compared with 4.43 eV for pristine graphene). Further, the sheet resistance of n-doped grapheneincreased, confi rming the high concentration of n-doping agents on the graphene layers. These results suggest the best alkylchain is the t -butyl group to reduce the work function of graphene, and promise the use of these materials as cathodes foropto-electronic applications.
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