Investigation of the Thermoelectric Power Factor of KOH-Treated PEDOT:PSS Dispersions for Printing Applications

Stepien, Lukas; Roch, Aljoscha; Schlaier, Sarah; Dani, Ines; Kiriy, Anton; Simon, F.; Lukowicz, M. von; Leyens, Christoph

doi:10.1515/energyo.0023.00050

Cited by 4 publications

(7 citation statements)

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“…As reported in literature, 13,36,37 these post treatments can facilitate the charge transport across the PEDOT chains. Their effects on the Seebeck coefficient and the conductivity of 33,38 The protonic acid doping lowers the Seebeck coefficient. Because the base treatment eliminates the protonic acid doping of PEDOT:PSS, it saliently increases the Seebeck coefficient of PEDOT:PSS.…”

Section: Methodsmentioning

confidence: 99%

Higher PEDOT Molecular Weight Giving Rise to Higher Thermoelectric Property of PEDOT:PSS: A Comparative Study of Clevios P and Clevios PH1000

Fan

Yao

et al. 2017

ACS Appl. Mater. Interfaces

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Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is a promising candidate as the next-generation thermoelectric (TE) material. Its TE properties are strongly dependent on its chemical and electronic structures. In this paper, we investigated the effect of PEDOT molecular weight on the TE properties of PEDOT:PSS films by a comparative study on two commercial grades of PEDOT:PSS, Clevios P, and Clevios PH1000. Dynamic light scattering (DLS) and Raman spectra imply that the PEDOT of Clevios PH1000 possesses longer conjugated chains than that of Clevios P. The TE properties of both the Clevios P and Clevios PH1000 films can be significantly enhanced through various post treatments, including solvent treatment, germinal diol treatment, organic solution treatment, and acid treatment. After these treatments, the treated Clevios PH1000 films constantly show both superior Seebeck coefficients and electrical conductivities over the treated Clevios P films. It is attributed to the higher molecular weight of PEDOT for the former than the latter. For the treated Clevios PH1000, longer PEDOT chains result in large PEDOT domains, facilitating the charge conduction a semimetallic behavior. Tuning the oxidation level of PEDOT:PSS is a facile way to enhance their TE property. A base treatment with sodium hydroxide was subsequently performed on both the treated Clevios P and Clevios PH1000 films. The power factors of both grades of PEDOT:PSS films were remarkably increased by a factor of 1.2-3.6. Still, both the conductivity and the Seebeck coefficient of a based-treated Clevios PH1000 film are superior over those of a control Clevios P film. The highest power factor the former is 334 μW/(m K) for the former while only 11.4 μW/(m K) for the latter. They are different by a factor of about 30 times.

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Section: Methodsmentioning

confidence: 99%

Higher PEDOT Molecular Weight Giving Rise to Higher Thermoelectric Property of PEDOT:PSS: A Comparative Study of Clevios P and Clevios PH1000

Fan

Yao

et al. 2017

ACS Appl. Mater. Interfaces

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“…The absorption in the visible and NIR range is related to the majority charge carriers in the PEDOT:PSS such as positively charged polarons and bipolarons. 23 The pristine PEDOT:PSS shows a strong absorption band within 1300−2000 nm, which can be attributed to the bipolarons; the absorption band within 700−1300 nm and 400−700 nm can be attributed to the polaron and the neutral polymer chain. 23 It is observed that bipolaron absorption reduced, whereas polaron and neutral polymer chain absorption increased with increasing EG contents.…”

Section: Resultsmentioning

confidence: 99%

“…23 The pristine PEDOT:PSS shows a strong absorption band within 1300−2000 nm, which can be attributed to the bipolarons; the absorption band within 700−1300 nm and 400−700 nm can be attributed to the polaron and the neutral polymer chain. 23 It is observed that bipolaron absorption reduced, whereas polaron and neutral polymer chain absorption increased with increasing EG contents. This phenomenon suggests that EG treatment can preferentially alter the PEDOT:PSS state from bipolarons to polarons and up to neutral chains.…”

Section: Resultsmentioning

confidence: 99%

Improving the Working Efficiency of a Triboelectric Nanogenerator by the Semimetallic PEDOT:PSS Hole Transport Layer and Its Application in Self-Powered Active Acetylene Gas Sensing

Uddin

Yaqoob

Chung

2016

ACS Appl. Mater. Interfaces

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Herein we report an enhanced triboelectric nanogenerator (TENG) based on the contact-separation mode between a patterned film of polydimethylsiloxane (PDMS) with a semimetallic elastomer of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and a nylon fiber film. The addition of ethylene glycol to the PEDOT:PSS film improves the functionality of the TENG significantly, yielding promising applicability in both indoor and outdoor (i.e., under sunlight) environments, with the maximum instantaneous power of 0.09 mW (indoors) and 0.2 mW (outdoors) for the load resistance of 3.8 MΩ. The device can also generate 11.2 V and 0.08 μA cm in response to the forearm movement of a human. Additionally, by replacing the bare nylon fiber in the TENG design with a Ag@ZnO/nylon fiber film, a self-powered active sensor (triboelectric nanogenerator-based sensor; TENS) has been realized to detect acetylene (CH) gas. The TENS exhibits excellent sensitivity of 70.9% (indoors) and 89% (outdoors) to CH gas of 1000 ppm concentration. The proposed approach for harvesting energy and sensing can be advantageous in practical applications and may stimulate new research that will enhance nanogenerators as well as wearable, self-powered active sensors.

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“…Doping and dedoping are the opposite phenomena and govern various electronic properties such as density and mobility of the carriers and oxidation level. As a result, electrical conductivity and the Seebeck coefficient are largely influenced [65][66][67]. There are various dopants explored by various researchers for obtaining satisfactory results such as dimethyl sulfoxide (DMSO), tetra hydro furan (THF), potassium hydroxide (KOH), etc.…”

Section: Doping and De-dopingmentioning

confidence: 99%

A review on the development of conjugated polymer-based textile thermoelectric generator

Jangra¹,

Maity²,

Vishnoi³

2021

Journal of Industrial Textiles

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Thermoelectric (TE) materials based on conjugated/conductive polymers can directly convert heat into electricity, and thus found promising applications in energy scavenging and cooling technologies. The performance of these thermoelectric materials is governed by different parameters like the nature of the material, thermal stability, electrical conductivity, Seebeck coefficient, and thermal conductivity. Although the traditional inorganic semiconductor materials such as PbTe (Lead Telluride), Bi2Te3 (Bismuth Telluride), SiGe (Silicon-Germanium), SnSe (Tin Selenide), and Skutterudite (CoAs2) are giving high performance, they have some inherent limitations, such as poor processability, toxicity, rare availability, and high cost of manufacturing. Whereas, organic conjugated polymers such as polyacetylene (PA), polyaniline (PANi), Poly(3-hexylthiophene) (P3HT), polypyrrole (PPy), poly 3,4-ethylenedioxythiophene (PEDOT), etc. have low cost of synthesis, light in weight, low toxicity and better processibility. Organic textile thermoelectric generators (T-TEG) can be prepared by in-situ polymerization of the conjugated polymers onto textile substrates. This article reviews the preparation, design and performance of these T-TEGs. Various approaches and scopes of improvement of efficiency of the thermoelectric effect of the T-TEGs are discussed. Various potential applications of the T-TEG in different fields are also described.

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Investigation of the Thermoelectric Power Factor of KOH-Treated PEDOT:PSS Dispersions for Printing Applications

Cited by 4 publications

References 0 publications

Higher PEDOT Molecular Weight Giving Rise to Higher Thermoelectric Property of PEDOT:PSS: A Comparative Study of Clevios P and Clevios PH1000

Higher PEDOT Molecular Weight Giving Rise to Higher Thermoelectric Property of PEDOT:PSS: A Comparative Study of Clevios P and Clevios PH1000

Improving the Working Efficiency of a Triboelectric Nanogenerator by the Semimetallic PEDOT:PSS Hole Transport Layer and Its Application in Self-Powered Active Acetylene Gas Sensing

A review on the development of conjugated polymer-based textile thermoelectric generator

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