Increase in electron scattering length in PEDOT:PSS by a triflic acid post-processing.

IF 1.7 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Monatshefte Fur Chemie Pub Date : 2017-01-01 Epub Date: 2017-03-31 DOI:10.1007/s00706-017-1973-1

Dominik Farka, H Coskun, P Bauer, D Roth, B Bruckner, Petr Klapetek, N Serdar Sariciftci, P Stadler

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引用次数: 6

Abstract

Abstract: A stringent limitation in many optoelectronic devices, such as solar cells and light emitting diodes, is the intrinsic need for a transparent electrode. Uniting relevant aspects, indium tin oxide (ITO) is often the material of choice, however, alternatives are sought and being in particular found in conductive polymers. In this work, we present a novel doping strategy to arrive at highly conducting polymeric material based on poly-3,4-ethylenedioxythiophene (PEDOT). Based on commercial high conductivity PEDOT:PSS (Clevios PH 1000), and a post processing with aqueous triflic acid delivers a material that is both transparent and of low resistivity (5.23 × 10^-4 Ω cm). Furthermore, this material retains its conductive character over a large temperature range, indicating metallic behaviour. This is further supported by positive magnetoconductance effects at low temperatures (1.8-10 K) and extended mean free paths of the conduction electrons are observed-evidencing for a metallic state in this polymer.

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三乙酸后处理后PEDOT:PSS中电子散射长度的增加。

摘要:在许多光电器件中，如太阳能电池和发光二极管，一个严格的限制是对透明电极的内在需求。结合相关方面，氧化铟锡(ITO)通常是选择的材料，然而，寻找替代品，特别是在导电聚合物中发现。在这项工作中，我们提出了一种新的掺杂策略，以获得基于聚3,4-乙烯二氧噻吩(PEDOT)的高导电聚合物材料。基于商业高导电性PEDOT:PSS (Clevios PH 1000)和含水三酸后处理，提供透明和低电阻率(5.23 × 10-4 Ω cm)的材料。此外，这种材料在很大的温度范围内保持其导电特性，表明其金属性能。这进一步得到了低温(1.8-10 K)下的正磁导效应的支持，并且观察到传导电子的平均自由程延长-证明该聚合物中存在金属态。图形化的简介:

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来源期刊

Monatshefte Fur Chemie 化学-化学综合

CiteScore

3.70

自引率

5.60%

发文量

116

审稿时长

3.3 months

期刊介绍： "Monatshefte für Chemie/Chemical Monthly" was originally conceived as an Austrian journal of chemistry. It has evolved into an international journal covering all branches of chemistry. Featuring the most recent advances in research in analytical chemistry, biochemistry, inorganic, medicinal, organic, physical, structural, and theoretical chemistry, Chemical Monthly publishes refereed original papers and a section entitled "Short Communications". Reviews, symposia in print, and issues devoted to special fields will also be considered.