Recent Progress on PEDOT-Based Thermoelectric Materials

Wei, Qingshuo; Mukaida, Masakazu; Kirihara, Kazuhiro; Naitoh, Yasuhisa; Ishida, Takao

doi:10.3390/ma8020732

Cited by 197 publications

(144 citation statements)

References 71 publications

(97 reference statements)

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“…Polymers as thermoelectric materials recently have attracted much attention due to easy fabrication processes and low material cost [21,22], as well as, low thermal conductivity, which is highly desirable for thermoelectric applications. Different types of polymers have been used in thermoelectric devices [23][24][25], such as polyaniline (PANI), poly(p-phenylenevinylene) (PPV), poly(3,4-ethylenedioxythiophene) (PEDOT), tosylate(tos), poly(styrenesulfonate) (PSS), and poly(2,5-dimethoxy phenylenevinylene) (PMeOPV), poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEHPPV) and poly(3-hexylthiophene-2,5-diyl) (P3HT). Figure 2 shows chemical structure of some polymers.…”

Section: Multiple Trapping and Release Theorymentioning

confidence: 99%

Thermoelectric Effect and Application of Organic Semiconductors

Lu¹,

Li²,

Liu³

2016

Thermoelectrics for Power Generation - A Look at Trends in the Technology

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Human development and society progress require solving many pressing issues, including sustainable energy production and environmental conservation. Thermoelectric power generation looks like promising opportunity converting huge heat from the sun and waste heat from industrial sector, housing appliances and infrastructure and automobile and other fuel combustion exhaust directly to electrical energy. Thermoelectric power generation will be of high demand, when technology will be affordable, providing low price, high conversion efficiency, reliability, easy applicability and advanced ecological properties of end products. In this context, organic thermoelectric materials attract great interest caused by non-scarcity of raw materials, non-toxicity, potentially low costs in high-scale production, low thermal conductivity and wide capabilities to control thermoelectric properties. In this chapter, we focus mainly on thermoelectric effect in several organic semiconductors, both crystalline and disordered. We present theory of some transport phenomena determining thermoelectric properties of organic semiconductors, including general expression of thermoelectric effect, percolation theory of Seebeck coefficient, hybrid model of Seebeck coefficient, Monte Carlo simulation and first-principle theory. Finally, a future outlook of this field is briefly discussed.

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Section: Multiple Trapping and Release Theorymentioning

confidence: 99%

Thermoelectric Effect and Application of Organic Semiconductors

Lu¹,

Li²,

Liu³

2016

Thermoelectrics for Power Generation - A Look at Trends in the Technology

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“…[17][18][19] Intensive studies of poly(3,4-ethylenedioxythiophene) (PEDOT) and related conductive polymer materials have resulted in high ZT values, reaching up to 0.42. [17,18,[20][21][22][23][24] Recently, Cho et al demonstrated very good TE properties of organic multilayer systems of graphene, carbon nanotubes and conductive polymers, that exceeds classical inorganic TE materials, and reached power factor of 2710 µW m -1 K -2 . [25,26] At same time low molecular weight compounds such as tetrathiofulvalene (TTF), tetracyanoquinodimethane (TCNQ) (see figure 1) and metal phthalocyanines have encouraging thermoelectric properties.…”

mentioning

confidence: 99%

Thin Film Organic Thermoelectric Generator Based on Tetrathiotetracene

Pudžs

Vembris

Rutkis

et al. 2017

Adv Elect Materials

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Thin films of p-and n-type organic semiconductors for thermo-electrical (TE) applications are produced by doping of tetrathiotetracene (TTT). To obtain p-type material TTT is doped with iodine during vacuum deposition of thin films or by post-deposition doping using controlled exposure to iodine vapors. Thermal co-deposition in vacuum of TTT and TCNQ is used to prepare n-type thin films. The attained thin films are characterized by measurements of Seebeck coefficient and electrical conductivity. Seebeck coefficient and conductivity could be varied by altering the doping level. P-type TTT:iodide thin films with a power factor of 0.52 μWm -1 K -2 , electrical conductivity of 130 S m -1 and Seebeck coefficient of 63 μV K -1 and n-type TCNQ:TTT films with power factor of 0.33 μWm -1 K -2 , electrical conductivity of 57 S m -1 and Seebeck coefficient of -75 μV K -1 are produced. Engineered deposition of both p-and n-type thermoelectric conducting elements on the same substrate is demonstrated. A proof of concept prototype of planar thin film TE generator based on a single p-n couple from the organic materials is built and its power generation characterized.

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“…C In recent years, use of organic semiconductors for heat-to-electricity conversion at relatively low temperatures has attracted considerable attention. [1][2][3][4][5][6] Compared with their inorganic counterparts, organic semiconductors benefit from the possibility of large-area device fabrication, low energy consumption during device fabrication, low capital costs, and design flexibility. To accurately evaluate candidate thermoelectric materials, the so-called Seebeck coefficient (voltage difference divided by a corresponding temperature difference), electrical conductivity, and thermal conductivity are the most important parameters that need to be scrutinized.…”

mentioning

confidence: 99%

Measurement of in-plane thermal conductivity in polymer films

et al. 2016

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Measuring the in-plane thermal conductivity of organic thermoelectric materials is challenging but is critically important. Here, a method to study the in-plane thermal conductivity of free-standing films (via the use of commercial equipment) based on temperature wave analysis is explored in depth. This subject method required a free-standing thin film with a thickness larger than 10 μm and an area larger than 1 cm2, which are not difficult to obtain for most solution-processable organic thermoelectric materials. We evaluated thermal conductivities and anisotropic ratios for various types of samples including insulating polymers, undoped semiconducting polymers, doped conducting polymers, and one-dimensional carbon fiber bulky papers. This approach facilitated a rapid screening of in-plane thermal conductivities for various organic thermoelectric materials.

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Recent Progress on PEDOT-Based Thermoelectric Materials

Cited by 197 publications

References 71 publications

Thermoelectric Effect and Application of Organic Semiconductors

Thermoelectric Effect and Application of Organic Semiconductors

Thin Film Organic Thermoelectric Generator Based on Tetrathiotetracene

Measurement of in-plane thermal conductivity in polymer films

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