The effect of solvent treatment on the buried PEDOT:PSS layer

被引：32

作者：

Song, Chen ^{[1
]}

Zhong, Zhiming ^{[1
]}

Hu, Zhanhao ^{[1
]}

Luo, Yu ^{[1
]}

Wang, Lei ^{[1
]}

Wang, Jian ^{[1
]}

Cao, Yong ^{[1
]}

机构：

[1] South China Univ Technol, Inst Polymer Optoelect Mat & Devices, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

来源：

ORGANIC ELECTRONICS | 2017年 / 43卷

关键词：

Solvent treatment; PEDOT:PSS; OLED; Polymer solar cells; Morphology; POLYMER SOLAR-CELLS; HIGHLY CONDUCTIVE PEDOTPSS; 25TH ANNIVERSARY ARTICLE; EFFICIENCY ENHANCEMENT; BULK HETEROJUNCTION; DIPPING TREATMENT; HYDROIODIC ACID; FILM; FABRICATION; INTERFACE;

D O I：

10.1016/j.orgel.2016.12.057

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Solvent treatment has been widely used to improve the device performance of both Organic Light Emitting Diodes (OLED5) and Polymer Solar Cells (PSCs). One of the proposed mechanisms is the modification of the buried PEDOT:PSS layer underneath the organic active layer by the permeating solvent. By measuring the lateral electric conductivity of the PEDOT:PSS layer, the 3 orders of magnitude's enhancement on the conductivity after solvent treatment confirms that the solvent permeates through the top organic active layer and modifies the PEDOT:PSS layer. Using a "peel-off" method, the buried PEDOT:PSS layer is fully exposed and studied by UV vis spectra, XPS spectra, and c-AFM images. The data suggest that the permeating solvent dissolves PSS, changes PEDOT:PSS' core-shell structure into a linear/coiled structure, and moves PSS from the bulk to the surface. As a result, PEDOT becomes more continuous in the bulk. The continuous conducting PEDOT-rich domains create percolating pathways for the current which significantly improve electric conductivity. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：9 / 14

页数：6

共 36 条

[1] Highly conductive PEDOT:PSS electrode by simple film treatment with methanol for ITO-free polymer solar cells [J].