The optimization of thermoelectric properties in a PEDOT:PSS thin film through post-treatment

SiYao, Liu; Deng, Hua; Zhao, Yun; Ren, Shijie; Fu, Qiang

doi:10.1039/c4ra09147g

Cited by 91 publications

(82 citation statements)

References 43 publications

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“…Aer the subsequent treatment with hydrazine, the s decreased from 2139 S cm À1 to 514 S cm À1 , while the S increased from 16.2 to 42.7 mV K À1 as the concentration of hydrazine increased from 0 to 2 wt%. This results in a best PF value of 93.5 mW K À2 m À1 , which is comparable to the PFs of some of PEDOT:PSS TE materials reported in the literature (Table S1 †) 24,29,[32][33][34][35][36] when the lm is treated with 0.15 wt% concentration of hydrazine.…”

Section: Resultssupporting

confidence: 82%

Modulation of the doping level of PEDOT:PSS film by treatment with hydrazine to improve the Seebeck coefficient

et al. 2020

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Section: Resultssupporting

confidence: 82%

Modulation of the doping level of PEDOT:PSS film by treatment with hydrazine to improve the Seebeck coefficient

et al. 2020

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“…All these recent significant breakthroughs in the TE performances of PEDOT came from the optimization method by controlling the oxidation level, which suggested that this technique was effective and promising. On the other hand, in a newly-published literature, Liu et al [29] systematically investigated the effect of co-solvents consisting of DMSO and EG on the TE performances of PEDOT:PSS films. In fact, as previously reported, [29][30][31][32][33] co-solvents system has been confirmed to exhibit synergistic effect on physical properties of materials such as solubility, adsorption, micellar, liquefaction and electrical conductivity etc.…”

Section: Introductionmentioning

confidence: 98%

Optimizing the thermoelectric properties of PEDOT:PSS films by combining organic co-solvents with inorganic base

Zhu

Liu

Jiang

et al. 2015

J Mater Sci: Mater Electron

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A simple optimizing approach that effectively improves the thermoelectric performance of poly (3,4-ethylenedioxylthiophene):poly(styrenesulfonate) (PED-OT:PSS) films is presented in this paper. The optimizing process is performed by over-dropping a mixture of DMSO/NaOH ethanol solution onto the PEDOT:PSS films, achieving the facile combination of co-solvents effect and dedoping effect. Largely varied electrical conductivity from 837.2 to 0.04 S cm -1 and the Seebeck coefficient from 12.6 to 54.8 lV K -1 are observed by changing the ratios between DMSO and NaOH ethanol solution. Due to the precise control of the dedoping level of PEDOT chains, an optimized power factor of 33.04 lW m -1 K -2 is obtained at the ratio of 10:12 in volume, which is four orders of magnitude higher than that of the pristine film and more than twice the value of DMSO-treated one, simultaneously with the corresponding electrical conductivity and Seebeck coefficient being 598.2 S cm -1 and 23.5 lV K -1 , respectively. Based on the measured thermal conductivity of 0.173 W m -1 K -1 , the maximum ZT value is calculated to be 0.057 at room temperature.

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“…Mixed solutions have been shown to exhibit several unique advantages, because of the formation of hydrogen bonds, variation of the binding energy, and the regulation of dielectric constant. Furthermore, mixed solutions can display a synergetic influence on the performance of materials . Thus, the introduction of mixed solvents during post‐treatment is a promising and useful approach.…”

Section: Introductionmentioning

confidence: 99%

Effects of additives and post‐treatment on the thermoelectric performance of vapor‐phase polymerized PEDOT films

Jia

Jiang

et al. 2017

J Polym Sci B Polym Phys

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Vapor‐phase polymerization (VPP) is an important method for the fabrication of high‐quality conducting polymers, especially poly(3,4‐ethylenedioxythiophene) (PEDOT). In this work, the effects of additives and post‐treatment solvents on the thermoelectric (TE) performance of VPP‐PEDOT films were systematically investigated. The use of 1‐butyl‐3‐menthylinidazolium tetrafluoroborate ([BMIm][BF4], an ionic liquid) was shown to significantly enhance the electrical conductivity of VPP‐PEDOT films compared with other additives. The VPP‐PEDOT film post‐treated with mixed ethylene glycol (EG)/[BMIm][BF4] solvent displayed the high power factor of 45.3 μW m−1 K−2 which is 122% higher than that prepared without any additive or post‐treatment solvent, along with enhanced electrical conductivity and Seebeck coefficient. This work highlighted the superior effect of the [BMIm][BF4] additive and the EG/[BMIm][BF4] solvent post‐treatment on the TE performance of the VPP‐PEDOT film. These results should help with developing the VPP method to fabricate high‐performance PEDOT films. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2017, 55, 1738–1744

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The optimization of thermoelectric properties in a PEDOT:PSS thin film through post-treatment

Abstract: Our study shows that by combination of co-solvent and temperature of solvent post treatment method, the highest power factor of 37.05 μW mK−2 is obtained for PEDOT:PSS post-treated with DMSO at 120 °C.

Cited by 91 publications

References 43 publications

Modulation of the doping level of PEDOT:PSS film by treatment with hydrazine to improve the Seebeck coefficient

Modulation of the doping level of PEDOT:PSS film by treatment with hydrazine to improve the Seebeck coefficient

Optimizing the thermoelectric properties of PEDOT:PSS films by combining organic co-solvents with inorganic base

Effects of additives and post‐treatment on the thermoelectric performance of vapor‐phase polymerized PEDOT films

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