Sigmoidal Dependence of Electrical Conductivity of Thin PEDOT:PSS Films on Concentration of Linear Glycols as a Processing Additive
- Authors
- Jeong, Hyeok Jo; Jang, Hong; Kim, Taemin; Earmme, Taeshik; Kim, Felix Sunjoo
- Issue Date
- Apr-2021
- Publisher
- MDPI
- Keywords
- conducting polymer; PEDOT:PSS; electrical conductivity; processing additive; linear glycol; sigmoidal function
- Citation
- MATERIALS, v.14, no.8
- Journal Title
- MATERIALS
- Volume
- 14
- Number
- 8
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/15556
- DOI
- 10.3390/ma14081975
- ISSN
- 1996-1944
- Abstract
- We investigate the sigmoidal concentration dependence of electrical conductivity of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) processed with linear glycol-based additives such as ethylene glycol (EG), diethylene glycol (DEG), triethylene glycol (TEG), hexaethylene glycol (HEG), and ethylene glycol monomethyl ether (EGME). We observe that a sharp transition of conductivity occurs at the additive concentration of similar to 0.6 wt.%. EG, DEG, and TEG are effective in conductivity enhancement, showing the saturation conductivities of 271.8, 325.4, and 326.2 S/cm, respectively. Optical transmittance and photoelectron spectroscopic features are rather invariant when the glycols are used as an additive. Two different figures of merit, calculated from both sheet resistance and optical transmittance to describe the performance of the transparent electrodes, indicate that both DEG and TEG are two most effective additives among the series in fabrication of transparent electrodes based on PEDOT:PSS films with a thickness of similar to 50-60 nm.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Chemical Engineering Major > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.