Synthesis and characterization of an electro-deposited polyaniline-bismuth telluride nanocomposite — A novel thermoelectric material

Chatterjee, Krishanu; Suresh, A.; Ganguly, Saibal; Kargupta, Kajari; Banerjee, Dipali

doi:10.1016/j.matchar.2009.09.012

Cited by 44 publications

(25 citation statements)

References 19 publications

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“…), using high‐TE‐performance inorganic semiconductors, metal coordination polymers, polymer blends, etc. Recently, the conducting polymer, highly doped polyaniline (PANI), has been thoroughly studied as a promising organic TE material Te, SWNT/Te, CNT/Ag, and chalcogenides, for example, PbTe, silver telluride (Ag 2 Te), zinc selenide (ZnSe), Bi 2 Te 3, bismuth antimony telluride (Bi 0.5 Sb 1.5 Te 3 ), cadmium sulfide (CdS), etc.…”

Section: Introductionmentioning

confidence: 99%

Composite of polyaniline‐bismuth selenide with enhanced thermoelectric performance

Mitra

Kulsi

Kargupta

et al. 2018

J of Applied Polymer Sci

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Conducting polymer‐chalcogenide composites have recently been used as propitious contenders for light‐weight, cost‐saving, and nonhazardous thermoelectric (TE) applications. In this work, polyaniline‐bismuth selenide (PANI‐Bi2Se3) nanoplate composites are fabricated via combining in situ oxidative polymerization and solvothermal method. X‐ray diffraction spectra illustrate a uniform growth of PANI matrix over Bi2Se3 nanoplates (BS NPs), directing toward a more ordered composite structure during polymerization. There is a reduction in average crystalline‐size, estimated from Williamson–Hall plot for the composite. Transmission electron microscopic and field emission microscopic images unveil the formation of two‐dimensional (2D) layered‐like structure of the composite. Fourier transform infrared spectra shows the interactions between the BS NPs along with the polymer chains by forming a 2D layered‐like composite structure. The enhanced transport properties can be elucidated on the basis of 2D variable‐range hopping model. The augmentation of power factor (S2σ) of the composite is nearly 30 times with an insignificant change in thermal conductivity (κ) as compared to PANI. This improves the high temperature TE performance (ZT = S2σT/κ~0.18) of the composite with 30 wt % BS NPs (ZTPANI~0.009). © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46887.

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Section: Introductionmentioning

confidence: 99%

Composite of polyaniline‐bismuth selenide with enhanced thermoelectric performance

Mitra

Kulsi

Kargupta

et al. 2018

J of Applied Polymer Sci

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“…F. S. Bahabri [13] studied the reflection and transmission spectra of poly crystalline Bi 2 Te 3 thin films and computed the indirect band gap from the Tauc plot. Krishanu Chatterjee et al [14] studied the absorbance spectra using FTIR for polycrystalline Bi 2 Te 3 films.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the optical properties of PLD-grown Bi<inf>2</inf>Te<inf>3</inf> and Sb<inf>2</inf>Te<inf>3</inf>

Shaik

Motaleb

2013

IEEE International Conference on Electro-Information Technology , EIT 2013

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The optical properties of Bismuth Telluride (Bi 2 Te 3 ) and Antimony Telluride (Sb 2 Te 3 ) thin films grown using pulsed laser deposition (PLD) were investigated. In one set of samples, the two materials were grown, on n-Si substrates, with growth temperatures ranging from 25 to 450 °C. In the second set, the films were deposited on microscopic glass slides at 150 °C. The optical properties were studied using Ultra Violet-Visible (UV-Vis) and Fourier Transform Infrared (FTIR) spectroscopy techniques. Absorbance spectra were obtained using UV-Vis spectroscopy, while transmittance spectra were obtained using FTIR spectroscopy. From the FTIR spectra and employing the Tauc plots, the optical band gaps for both materials were obtained. The values of the optical band gaps for Bi 2 Te 3 are between 0.22-0.26 eV and for Sb 2 Te 3 are between 0.19-0.28 eV.

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“…The small amount of PTh in the Bi 2 Te 3 matrix increases its absolute Seebeck coefficient. The largest absolute value of the Seebeck coefficient, S, was 156 lV/K, occurring for the sample with 5% PTh at 423 K, which is more than 10% higher than that of pure Bi 2 Te 3 prepared under the same conditions and much higher than the values of 10 lV/K to 30 lV/K reported for a PANI/Bi 2 Te 3 composite by Chatterjee et al 17 However, the absolute Seebeck coefficient of the PTh/Bi 2 Te 3 composite decreases with further increases of the PTh content.…”

Section: Thermoelectric Propertiesmentioning

confidence: 55%

Synthesis and Characterization of Polythiophene/Bi2Te3 Nanocomposite Thermoelectric Material

Wang

et al. 2011

Journal of Elec Materi

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To achieve low thermal conductivity, polythiophene (PTh)/bismuth telluride (Bi 2 Te 3 ) nanocomposite has been prepared by spark plasma sintering using a mixture of nanosized Bi 2 Te 3 and PTh powders. Bi 2 Te 3 powder with sphericalshaped particles of 30 nm diameter and PTh nanosheet powder were first prepared by hydrothermal synthesis and chemical oxidation, respectively. X-ray diffraction analysis and scanning electron microscopy observations revealed that the hybrid composite consists of PTh nanosheets and spherical Bi 2 Te 3 . The organic PTh acts as an adhesive in the composite. Transport measurements showed that the PTh in the Bi 2 Te 3 matrix can reduce its thermal conductivity significantly, but also dramatically reduces its electrical conductivity. As a result, the figure of merit of the composite is lower than that of pure Bi 2 Te 3 prepared under the same conditions. The maximum value of ZT for the sample with 5% PTh (by weight) was 0.18 at 473 K, which is rather high compared with other polymer/inorganic thermoelectric material composites.

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Synthesis and characterization of an electro-deposited polyaniline-bismuth telluride nanocomposite — A novel thermoelectric material

Cited by 44 publications

References 19 publications

Composite of polyaniline‐bismuth selenide with enhanced thermoelectric performance

Composite of polyaniline‐bismuth selenide with enhanced thermoelectric performance

Investigation of the optical properties of PLD-grown Bi<inf>2</inf>Te<inf>3</inf> and Sb<inf>2</inf>Te<inf>3</inf>

Synthesis and Characterization of Polythiophene/Bi2Te3 Nanocomposite Thermoelectric Material

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