Electric contacts on conductive polymers: sodium on poly(3-hexylthiophene-2,5-diyl)

被引：23

作者：

Mikalo, RP ^{[1
]}

Schmeisser, D ^{[1
]}

机构：

[1] Brandenburg Tech Univ Cottbus, Dept Appl Phys Sensors, D-03046 Cottbus, Germany

来源：

SYNTHETIC METALS | 2002年 / 127卷 / 1-3期

关键词：

poly(3-hexylthiophene-2,5-diyl); interface; photoelectron spectroscopy; band bending; n-doping;

D O I：

10.1016/S0379-6779(01)00633-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Sodium as a model contact with low work function on regioregular poly(3-hexylthiophene-2,5-diyl) (P3HT) films was investigated. The interface was studied by X-ray and ultraviolet photoelectron spectroscopy in the range of 0.13 up to 1.8 metal atoms per hexylthiophene unit. In the range of 0.13-0.26 sodium atoms per hexylthiophene ring we find a change in the surface potentials which is interpreted as a discharge of positive surface charges. Sodium exposures above 0.5 sodium atoms per hexylthiophene unit exhibit a reduction of the thiophene sulfur due to the formation of sodium sulfide and breaking of the thiophene ring. (C) 2002 Elsevier Science B.V. All fights reserved.

引用

页码：273 / 277

页数：5

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