Improving Optoelectrical Properties of PEDOT: PSS by Organic Additive and Acid Treatment
Shui-Yang Lien,
Po-Chen Lin,
Wen-Ray Chen,
Chuan-Hsi Liu,
Po-Wen Sze,
Na-Fu Wang,
Chien-Jung Huang
Affiliations
Shui-Yang Lien
School of Opto-Electronic and Communication Engineering, Xiamen University of Technology, Xiamen 361024, China
Po-Chen Lin
Department of Applied Physics, National University of Kaohsiung, Kaohsiung University Rd., Kaohsiung 81148, Taiwan
Wen-Ray Chen
Department of Electronic Engineering, National Formosa University, Wenhua Rd., Yunlin 632301, Taiwan
Chuan-Hsi Liu
Department of Mechatronic Engineering, National Taiwan Normal University, Heping East Rd., Taipei 10610, Taiwan
Po-Wen Sze
Department of Electrical Engineering, Kao Yuan University, Zhongshan Rd., Kaohsiung 82151, Taiwan
Na-Fu Wang
Center for Environmental Toxin and Emerging-Contaminant Research, Super Micro Mass Research & Technology Center, Department of Electronic Engineering, Cheng Shiu University, Chengcing Rd., Kaohsiung 82146, Taiwan
Chien-Jung Huang
Department of Applied Physics, National University of Kaohsiung, Kaohsiung University Rd., Kaohsiung 81148, Taiwan
This article demonstrates the change of structural and optical properties of poly (3,4-ethylene dioxythiophene): polystyrene sulfonate (PEDOT: PSS) by organic additive and acid treatment. The addition of sorbitol and maltitol can disperse the micelles of PEDOT: PSS. The mechanism of the bond-breaking reaction was investigated and a model for the bond-breaking reaction is also proposed. Furthermore, multiple formic acid treatments were found to reduce the PSS content of PEDOT: PSS, resulting in an enhancement in conductivity (4.2 × 104 S/m).
