High-conductivity poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) film for use in ITO-free polymer solar cells
High-conductivity poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) film for use in ITO-free polymer solar cells
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DOI：
10.1039/b813079e
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发表时间：
2008-01-01
影响因子：
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通讯作者：
Chen, Yi-Chun
中科院分区：
文献类型：
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作者：
Hsiao, Yu-Sheng;Whang, Wha-Tzong;Chen, Yi-Chun
在这项研究中，我们设计了一种简单的方法来提高导电性的聚（3，4-乙撑二氧噻吩）-聚（苯乙烯磺酸盐）（PEDOT：PSS）薄膜通过旋涂各种表面改性化合物，然后将这种技术应用于制备ITO的聚合物太阳能电池（PSC）。PEDOT：PSS膜的电导率可以仅通过将含有一个或多个极性基团的化合物（例如乙醇、甲氧基乙醇、1，2-二甲氧基乙烷和乙二醇）旋涂到膜上而增加超过两个数量级。在本文中，我们讨论了发生的现象，通过导电性，形貌，和化学性质的改性PEDOT-PSS膜确定使用拉曼光谱，四点探针，扫描电子显微镜（SEM），原子力显微镜（AFM），透射电子显微镜（TEM），和X射线光电子能谱（XPS）。直接溶剂改性的PEDOT：PSS薄膜的示意性三维形态模型被假定为ITO自由器件。这些材料的所需导电性增强使它们成为用作无ITO PSC中的阳极材料的有吸引力的候选物。
In this study, we devised a simple method to enhance the conductivity of poly(3,4-ethylenedioxythiophene)-poly(styrene-sulfonate) (PEDOT:PSS) films through spin-coating with various surface-modified compounds, and then applied this technique to the preparation of ITO-free polymer solar cells (PSCs). The electrical conductivity of PEDOT: PSS films can be increased by more than two order of magnitudes merely by spin-coating a compound containing one or more polar groups - such as ethanol, methoxyethanol, 1,2-dimethoxyethane, and ethylene glycol - onto the films. In this paper, we discuss the phenomena occurring through conductivities, morphologies, and chemical properties of the modified PEDOT-PSS films as determined using Raman spectroscopy, a four-point probe, scanning electron microscopy (SEM), atomic force microscopy (AFM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The schematic 3D morphological model of directly solvent-modified PEDOT: PSS films is presumed for ITO-free devices. The desirable conductivity enhancements of these materials make them attractive candidates for use as anode materials in ITO-free PSCs.