Structure Influence of Amine-Containing Additives on the Solution State and Out-of-Plane Conductivity of PEDOT:PSS for Efficient Organic Solar Cells
Wenwen Jing
School of Chemical Engineering and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065 P. R. China
Search for more papers by this authorXiaopeng Xu
School of Chemical Engineering and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065 P. R. China
Search for more papers by this authorCorresponding Author
Liyang Yu
School of Chemical Engineering and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065 P. R. China
E-mail: [email protected]; [email protected]
Search for more papers by this authorCorresponding Author
Qiang Peng
School of Chemical Engineering and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065 P. R. China
E-mail: [email protected]; [email protected]
Search for more papers by this authorWenwen Jing
School of Chemical Engineering and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065 P. R. China
Search for more papers by this authorXiaopeng Xu
School of Chemical Engineering and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065 P. R. China
Search for more papers by this authorCorresponding Author
Liyang Yu
School of Chemical Engineering and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065 P. R. China
E-mail: [email protected]; [email protected]
Search for more papers by this authorCorresponding Author
Qiang Peng
School of Chemical Engineering and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065 P. R. China
E-mail: [email protected]; [email protected]
Search for more papers by this authorAbstract
Additives are extensively explored for improving PEDOT:PSS performances mainly through the removal of excess PSS and as a secondary dopant. In this work, amine-containing additives are introduced to PEDOT:PSS solutions as processing additives where the interactions to the PSS are anticipated through electrostatic interactions. Such interactions affected solution property where the increased viscosity is found to significantly increase the out-of-plane conductivity of the PEDOT:PSS thin films. Organic solar cells adopting these additive-assisted processed PEDOT:PSS layers as hole transporting layers (HTL) showed the improved device performances that resulted from the reduced series resistance provided by the PEDOT:PSS HTL. A top power conversion efficiency of 18.28% is achieved with para-phenylenediamine (PPD) additive in the PEDOT:PSS HTL, which is 3.5% higher compared to devices with neat PEDOT:PSS thin film as the HTL.
Conflict of Interest
The authors declare no conflict of interest.
Open Research
Data Availability Statement
Research data are not shared.
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