| 학회 |
한국고분자학회 |
| 학술대회 |
2011년 가을 (10/06 ~ 10/07, 김대중 컨벤션센터) |
| 권호 |
36권 2호 |
| 발표분야 |
고분자 구조 및 분석－Scattering & Spectroscopy |
| 제목 |
The Role of Solvent Additives on Conductivity Enhancement of Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) Films |
| 초록 |
We report the role of solvent additives (dimethylsulfoxide; DMSO) on conductivity enhancement of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films by employing optical reflectance and X-ray diffraction (XRD) measurements. Despite huge increase in conductivities from 1.5 to 700 S/cm by adding DMSO, the plasma frequency for both films of aqueous solutions with and without DMSO is almost identical, indicating the same charge carrier concentration of both PEDOT:PSS films. On the other hand, the increased mean free path implies that DMSO induces the reduction of disorder in the PEDOT:PSS film. In addition, the XRD diffractograms indicate that the addition of DMSO leads to more planar structure of PEDOT:PSS backbone, shortening the phase-to-phase stacking distance at the [010] direction. As a result, this morphological change in the PEDOT:PSS film with DMSO causes phase transition from the insulating regime to the metallic regime. |
| 저자 |
김나라, 이병훈, 김희주, 김근진, 김정환, 이종진, 이광희
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| 소속 |
광주과학기술원 |
| 키워드 |
PEDOT; conductivity; additive
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| E-Mail |
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