Transfer-Printed PEDOT:PSS Electrodes Using Mild Acids for High Conductivity and Improved Stability with Application to Flexible Organic Solar Cells

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• 作者：Xi Fan ; Bingang Xu ; Shenghua Liu ; Chaohua Cui ; Jinzhao Wang ; Feng Yan
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：June 8, 2016
• 年：2016
• 卷：8
• 期：22
• 页码：14029-14036
• 全文大小：574K
• 年卷期：0
• ISSN：1944-8252

文摘

Highly conductive, flexible, and transparent electrodes (FTEs) of PEDOT:PSS films on plastic substrates have been achieved using strong acid treatments. However, it is rare to realize a performance attenuation of PEDOT:PSS FTEs on plastic substrates and flexible optoelectronic devices because of strong acid residues in the PEDOT:PSS matrix. Herein, we develop a feasible transfer-printing technique using mild acids. Because of a mild and weak property of these acids and less acid residues in PEDOT:PSS matrix, the transferred PEDOT:PSS FTEs exhibited a significant enhancement in stability, conductivity (3500 S cm^–1), transparency, and mechanical flexibility on plastic substrates. Flexible organic solar cells with the FTEs also showed a remarkable enhancement in power conversion efficiency and stability in the ambient atmosphere. It is expected that the novel transfer-printing technique for making PEDOT:PSS FTEs is also useful in many other types of flexible optoelectronic devices.