Doped State and Solubility Changes in PEDOT:PSS Thin Films by High-Energy Gamma-Ray Irradiation
- Authors
- Jang, Hong; Park, Juhyun; Kim, Felix Sunjoo
- Issue Date
- May-2019
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- conducting polymer; doping; gamma-ray irradiation; PEDOT:PSS; radiation effect
- Citation
- PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, v.216, no.9
- Journal Title
- PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
- Volume
- 216
- Number
- 9
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/36926
- DOI
- 10.1002/pssa.201800980
- ISSN
- 1862-6300
1862-6319
- Abstract
- Poly(3,4-ethylenedioxythiophene):poly(styrenesulphonate) (PEDOT:PSS) thin films with various electrical-conductivity ranges are irradiated with gamma rays over a wide range of doses (1-50kGy). Spectroscopic analyses reveal that the high-energy irradiation results in changes in the doped state and chemical structure of the thin polymer films. Through the absorption measurement of the doped PEDOT:PSS films, the authors find that the films are relatively insensitive to irradiation and that the neutral state peaks in the de-doped PEDOT decrease relative to the doped state as the gamma-ray dose increases. The gamma-ray irradiation up to 50kGy results in a decrease in electrical conductivity in the already doped polymer films whereas it induces re-doping and electrical-conductivity enhancement in the chemically de-doped ones. The high-dose irradiation also induces chemical cross-linking, resulting in thin films that are robust against solvent dipping.
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Collections - College of Engineering > School of Chemical Engineering and Material Science > 1. Journal Articles
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