Electrochemical adjustment of the work function of a conducting polymer

被引:36
作者
Petr, A [1 ]
Zhang, F [1 ]
Peisert, H [1 ]
Knupfer, M [1 ]
Dunsch, L [1 ]
机构
[1] Leibniz Inst Solid State & Mat Res Dresden, D-0069 Dresden, Germany
关键词
D O I
10.1016/j.cplett.2003.12.065
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 work function of spin cast films of poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS) was adjusted by electrochemical oxidation/reduction. The electrochemical equilibrium potential of these films was compared to the absolute value of the work function measured at dry films in ultra high vacuum by ultraviolet photoemission spectroscopy. A linear relationship between work function and equilibrium potential was found. It is shown that the redox state of the films is not changed by transferring the films into the dry state. The sodium content of the layers is strongly diminished after electrochemical treatment. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:140 / 143
页数:4
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