| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
37권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Highly Stable Doping State in Graphene via Combination with Poly(3,4-ethlyenedioxythiophene):poly(styrenesulfonate) as a Doping Agent |
| 초록 |
We report a high performance graphene electrode via chemical doping with a conducting polymer, poly(3,4-ethlyenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as a dopant and protection layer. Multi-layered graphene (GR) was synthesized on Ni-coated Si/SiO2 substrate by chemical vapor deposition (CVD). By casting a PEDOT:PSS layer on the GR, the sheet resistance (Rs) was reduced from ~ 350 to ~ 150 Ω/□ without significant change in optical transmittance. More significantly, PEDOT:PSS-doped GR shows the enhanced stability in air – no change in Rs during 1300 hrs – compared to those of GR doped with HNO3 or AuCl3. Raman spectra of the PEDOT:PSS-doped GR indicate that GR is doped with sulfuric acid of PEDO:PSS and the doping state is stable due to strong electrostatic force between positively charged carbon in GR and sulfonate anion in PSS. |
| 저자 |
이종훈, 이병훈, 김나라, 김용재, 강영호, 이광희
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| 소속 |
광주과학기술원 |
| 키워드 |
Graphene; transparent electrode; doping; conducting polymer
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| E-Mail |
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