| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
37권 2호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Sustainable doping of graphene via intercalation of solvent |
| 초록 |
We devised a method for the stable p-doping of chemical vapor deposition (CVD)-grown graphene, using a common solvent. Immersion of the transferred graphene into chloroform (CHCl3; CF) solvent induced strong and stable p-doping on the graphene, without sacrificing transmittance. After doping with CF, the work function of the graphene increased from 4.61 to 5.18 eV, and the sheet resistance decreased from 630 to 300 Ω/□ . These stable doping properties were caused by the intercalation of CF molecules at the interface between the graphene and the SiO2 substrate. CF clusters were formed beneath the basal plane of the graphene as well as inside the wrinkles. This was verified by microscopic observations, and measurements of the energy associated with the desorption of CF molecules from the graphene using the Arrhenius plot. Theoretical calculations of the intercalated structure supported the experimental observations of CF clusters beneath the graphene. |
| 저자 |
김현호, 양재원, 조새벽, 이성규, 김광수, 조길원
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| 소속 |
포항공과대 |
| 키워드 |
Graphene; chemical vapor deposition; molecular contact doping; solvent
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| E-Mail |
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