Structural and Thermoelectric Properties of Optically Transparent Thin Films Based on Single-Walled Carbon Nanotubes

Тамбасов, И. А.; Voronin, A. I.; Evsevskaya, N. P.; Волочаев, М. Н.; Fadeev, Yu. V.; Крылов, А. С.; Aleksandrovskii, A. S.; Lukyanenko, A. V.; Abelyan, S. R.; Tambasova, Ekaterina V.

doi:10.1134/s1063783418120296

Cited by 10 publications

(2 citation statements)

References 15 publications

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“…Taking into account that the conductivity of semiconductor nanotubes is smaller, if we extrapolate these combinations to MWCNTs, the probability of having semiconductor nanotubes increases and, therefore, the conductivity decreases [32][33][34]. The Seebeck coefficient reached a value of 55 µV K −1 in agreement with previous work [35]. The assembly of the PEDOT and CNTs layers was performed according to the procedure shown in Figure 1b, using MWCNT, DWCNT, and SWCNT with the different EDOT:FeTos molar ratios and different numbers of bilayers (10-60 bilayers).…”

Section: Resultssupporting

confidence: 90%

Poly(3,4-Ethylenedioxythiophene) Nanoparticles as Building Blocks for Hybrid Thermoelectric Flexible Films

Serrano-Claumarchirant

Culebras

Cantarero

et al. 2019

Coatings

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Hybrid thermoelectric flexible films based on poly(3,4-ethylenedioxythiophene) (PEDOT) nanoparticles and carbon nanotubes were prepared by using layer-by-layer (LbL) assembly. The employed PEDOT nanoparticles were synthesized by oxidative miniemulsion polymerization by using iron(III) p-toluenesulfonate hexahydrate (FeTos) as an oxidant and poly(diallyldimethylammonium chloride) (PDADMAC) as stabilizer. Sodium deoxycholate (DOC) was used as a stabilizer to prepare the aqueous dispersions of the carbon nanotubes. Hybrid thermoelectric films were finally prepared with different monomer/oxidant molar ratios and different types of carbon nanotubes, aiming to maximize the power factor (PF). The use of single-wall (SWCNT), double-wall (DWCNT), and multiwall (MWCNT) carbon nanotubes was compared. The Seebeck coefficient was measured by applying a temperature difference between the ends of the film and the electrical conductivity was measured by the Van der Pauw method. The best hybrid film in this study exhibited a PF of 72 µW m −1 K −2 . These films are prepared from aqueous dispersions with relatively low-cost materials and, due to lightweight and flexible properties, they are potentially good candidates to recover waste heat in wearable electronic applications.Coatings 2020, 10, 22 2 of 12 polymer nanocomposites and hybrids can be a real alternative to typical inorganic semiconductors based, for instance, on Bi 2 Te 3 [3][4][5]. Conducting polymers based on poly(3, 4-ethylenedioxythiophene) (PEDOT) have shown efficient values of ZT in the range from 0.1 to 0.4 [1,6,7]. On the other hand, carbon nanotubes (CNTs) have been shown to be good nanofillers to develop high efficient thermoelectric nanocomposites, reaching very high values of power factor (PF), defined as PF = S 2 σ [8-10]. It is known that the electrical properties of conducting polymers depend significantly on the arrangement of the polymer chains [11][12][13]. Since CNTs are rolled graphene sheets, π-π interactions can occur between the graphene ring of the carbon nanotube and the aromatic ring or double bonds of the conducting polymer, which can act as a template for an optimal ordering and, thus, produce a synergistic effect on thermoelectric properties [14]. In addition, the combination of conducting polymer and inorganic semiconductor-based on Te and Bi 2 Te 3 has demonstrated an enormous potential in terms of thermoelectric efficiency, being in some of the cases even higher than for the starting materials [15,16].Multilayered materials based on conducting polymers and carbon nanostructures (CNTs and graphene) stand out over the rest because their thermoelectric efficiency can be higher than bulk Bi 2 Te 3 . For example, very high power factors have been obtained for multilayered thin films prepared using layer-by-layer (LbL) assembly and based on polyaniline (PANI), double-walled carbon nanotubes (DWCNT) and graphene (1750 µW m −1 K −2 ), or PANI, DWCNT, poly(3,4-ethylenedioxythiophene)/poly(styrene sulfonate) (PEDOT:PSS), and graphene (2710 µW m −1 K...

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Section: Resultssupporting

confidence: 90%

Poly(3,4-Ethylenedioxythiophene) Nanoparticles as Building Blocks for Hybrid Thermoelectric Flexible Films

Serrano-Claumarchirant

Culebras

Cantarero

et al. 2019

Coatings

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“…Разработанная установка состоит из термостата, прецизионного источника тока Keithley 2400, специально разработанного держателя для образца (задает градиентный нагрев образца), 2-х термопар K-типа, а также 24-битного аналогово-цифрового преобразователя LTR114 на базе крейта LTR-EU-2 фирмы " Л Кард" (Россия). Подробное описание установки и методики проведения термоэлектрических измерений можно найти в работе [28]. На рис.…”

Section: методика получения и исследования пленокunclassified

Структурные, оптические и термоэлектрические свойства тонких ZnO:Al пленок, полученных атомно-слоевым осаждением

Тамбасов¹,

Волочаев²,

Voronin³

et al. 2019

Физика Твердого Тела

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Thin films of aluminum doped zinc oxide were grown using atomic layer deposition at a temperature of 200 ° C. Using X-ray diffraction, it was found that thin ZnO: Al films have peaks from the (100), (002), (110) and (201) planes of the hexagonal ZnO phase. The (101) and (102) planes were also detected using electron diffraction. Thin ZnO: Al films grow smooth with a root-mean-square roughness of Rq of 0.33 nm and characteristic nanocrystallite sizes of ~ 70 and ~ 15 nm without additional phases associated with aluminum or aluminum oxides. The transmission at a wavelength of 550 nm, taking into account the substrate, was ~ 96%. The refractive indices and absorption coefficients of thin ZnO: Al films in the wavelength range of 250–900 nm were found. The maximum values for the refractive and absorption coefficients were 2.09 at a wavelength of 335 nm and 0.39 at a wavelength of 295 nm, respectively. The optical band gap was 3.56 eV. The resistivity, the Seebeck coefficient and the power factor of thin ZnO: Al films were ~ 1.02 · 10-3 Ohm · cm, ~ - 60 μV / K and 340 μW · m-1 · K-2 at room temperature, respectively. The maximum power factor reached 620 μW · m-1 · K-2 at a temperature of 200 ° C.

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High performance THz metasurface sensor based on modified-SWCNTs film for femtomolar protein detection

Zhang,

Wang,

Luo

et al. 2024

Carbon

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Structural and Thermoelectric Properties of Optically Transparent Thin Films Based on Single-Walled Carbon Nanotubes

Cited by 10 publications

References 15 publications

Poly(3,4-Ethylenedioxythiophene) Nanoparticles as Building Blocks for Hybrid Thermoelectric Flexible Films

Poly(3,4-Ethylenedioxythiophene) Nanoparticles as Building Blocks for Hybrid Thermoelectric Flexible Films

Структурные, оптические и термоэлектрические свойства тонких ZnO:Al пленок, полученных атомно-слоевым осаждением

High performance THz metasurface sensor based on modified-SWCNTs film for femtomolar protein detection

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