Morphology and conductivity of PEDOT/PSS films studied by scanning-tunneling microscopy

被引：238

作者：

Timpanaro, S

Kemerink, M

Touwslager, FJ

De Kok, MM

Schrader, S

机构：

[1] Eindhoven Univ Technol, Dept Appl Phys Mol Mat & Nanosyst, NL-5600 MB Eindhoven, Netherlands

[2] LS PKM, Inst Phys, D-14469 Potsdam, Germany

[3] Philips Res Labs, NL-5656 AA Eindhoven, Netherlands

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 394卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2004.07.035

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 influence of sorbitol on the nanometer-scale morphology of poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS) is investigated by scanning-tunneling microscopy. In all investigated films relatively well-conducting PEDOT particles are observed. with typical sizes of 10-50 nm, that are embedded in a less conductive PSS matrix. Addition of sorbitol to the casting solution is found to enhance the clustering of the PEDOT particles into larger domains. The observed morphologies are correlated to the macroscopic conductivity of the films, using an intuitive model. In addition, the morphology in the top layer of the films was found to differ substantially from the bulk morphology. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：339 / 343

页数：5

共 18 条

[1] Structure of thin films of poly(3,4-ethylenedioxythiophene) [J].