Acido-basic control of the thermoelectric properties of poly(3,4-ethylenedioxythiophene)tosylate (PEDOT-Tos) thin films

被引：143

作者：

Khan, Zia Ullah ^{[1
]}

Bubnova, Olga ^{[1
,2
]}

Jafari, Mohammad Javad ^{[3
]}

Brooke, Robert ^{[1
,4
]}

Liu, Xianjie ^{[3
]}

Gabrielsson, Roger ^{[1
]}

Ederth, Thomas ^{[3
]}

Evans, Drew R. ^{[4
]}

Andreasen, Jens W. ^{[5
]}

Fahlman, Mats ^{[3
]}

Crispin, Xavier ^{[1
]}

机构：

[1] Linkoping Univ, Dept Sci & Technol, S-60174 Norrkoping, Sweden

[2] Univ Cambridge, Cavendish Lab, Optoelect Grp, Cambridge CB3 0HE, England

[3] Linkoping Univ, Dept Phys Chem & Biol, S-58183 Linkoping, Sweden

[4] Univ S Australia, Mawson Inst, Mawson Lakes 5095, Australia

[5] Tech Univ Denmark, Dept Energy Convers & Storage, DK-4000 Roskilde, Denmark

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2015年 / 3卷 / 40期

基金：

欧洲研究理事会;

关键词：

CONDUCTING POLYMER POLY(3,4-ETHYLENEDIOXYTHIOPHENE); ENHANCEMENT; POLYANILINE; SULFONATE); TRANSPORT; STABILITY;

D O I：

10.1039/c5tc01952d

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

PEDOT-Tos is one of the conducting polymers that displays the most promising thermoelectric properties. Until now, it has been utterly difficult to control all the synthesis parameters and the morphology governing the thermoelectric properties. To improve our understanding of this material, we study the variation in the thermoelectric properties by a simple acido-basic treatment. The emphasis of this study is to elucidate the chemical changes induced by acid (HCl) or base (NaOH) treatment in PEDOT-Tos thin films using various spectroscopic and structural techniques. We could identify changes in the nanoscale morphology due to anion exchange between tosylate and Cl- or OH-. But, we identified that changing the pH leads to a tuning of the oxidation level of the polymer, which can explain the changes in thermoelectric properties. Hence, a simple acid-base treatment allows finding the optimum for the power factor in PEDOT-Tos thin films.

引用

页码：10616 / 10623

页数：8

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