The origin of the high conductivity of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT- PSS) plastic electrodes

被引:830
作者
Crispin, X.
Jakobsson, F. L. E.
Crispin, A.
Grim, P. C. M.
Andersson, P.
Volodin, A.
van Haesendonck, C.
Van der Auweraer, M.
Salaneck, W. R.
Berggren, M.
机构
[1] Linkoping Univ, Dept Sci & Techol, S-60174 Norrkoping, Sweden
[2] Linkoping Univ, Dept Phys & Measurement Technol, S-58183 Linkoping, Sweden
[3] Katholieke Univ Leuven, Div Mol & NanoMat, B-3001 Louvain, Belgium
[4] Katholieke Univ Leuven, Lab Solid State Phys & Magnetism, B-3001 Heverlee, Belgium
关键词
D O I
10.1021/cm061032+
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The development of printed and flexible (opto)electronics requires specific materials for the device's electrodes. Those materials must satisfy a combination of properties. They must be electrically conducting, transparent, printable, and flexible. The conducting polymer poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT-PSS) is known as a promising candidate. Its conductivity can be increased by 3 orders of magnitude by the secondary dopant diethylene glycol (DEG). This "secondary doping" phenomenon is clarified in a combined photoelectron spectroscopy and scanning probe microscopy investigation. PEDOT-PSS appears to form a three-dimensional conducting network explaining the improvement of its electrical property upon addition of DEG. Polymer light emitting diodes are successfully fabricated using the transparent plastic PEDOT-PSS electrodes instead of the traditionally used indium tin oxide.
引用
收藏
页码:4354 / 4360
页数:7
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