High thermoelectric performance of p-type Bi0.5Sb1.5Te3 films on flexible substrate

Parashchuk, Taras; Kostyuk, O. B.; Nykyruy, Lyubomyr; Dashevsky, Z.

doi:10.1016/j.matchemphys.2020.123427

Cited by 37 publications

(37 citation statements)

References 29 publications

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“…The scheme as well as the operating principle of a typical flash evaporation apparatus can be found in the previous study. [ 41 ] Such a method provides an excellent agreement with the chemical composition of films. For film fabrication, a mica substrate was used.…”

Section: Methodsmentioning

confidence: 99%

Influence of Deformation on Pb_1−xIn_xTe_1−yI_y and Pb_1−x−ySn_xIn_yTe Films

Parashchuk

Chernyak

Немов

et al. 2020

Physica Status Solidi (b)

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Herein, the original technique for transport measurements at one‐axis deformation is applied for the characterization of In‐doped n‐type Pb1−xSnxTe thin films on a mica substrate. The main advantage of the developed setup is the possibility of obtaining a significantly higher pressure compared with bulk samples. A systematic study of the transport properties as a function of pressure for In‐doped PbTe and PbSnTe films is conducted. A huge deformation of up to ≈6% without sample destruction is obtained within one‐axis deformation and an applied pressure of up to ≈30 kbar for Pb1−xInxTe1−yIy and Pb1−x−ySnxInyTe thin films. This allowed us to determine the position of the In resonance level in the band spectrum of the PbSnTe compound as a function of the pressure. The In impurity level is moving up with the application of pressure. Such a conclusion is confirmed by the Hall effect and electrical conductivity measurements for Pb1−xSnxTe films doped with In and can be explained by the fact that In impurity wave functions are strongly localized and interact weakly with Bloch states of PbSnTe and with each other.

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Section: Methodsmentioning

confidence: 99%

Influence of Deformation on Pb_1−xIn_xTe_1−yI_y and Pb_1−x−ySn_xIn_yTe Films

Parashchuk

Chernyak

Немов

et al. 2020

Physica Status Solidi (b)

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“…The p-Bi0.5Sb1.5Te3 and n-PbTe:In (I) films were deposited by flash evaporation technology [24]. A set up for obtaining films by flash evaporation method is shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…However, the high value of the figure of merit Z for Bi2Te3-based films like for bulk crystals (Z ~ 3 × 10 -3 K -1 ) [20][21][22] had been not achievable for a long time. Recently, the high value of Z ≈ 3 × 10 -3 K -1 at T = 300 K for p-type Bi0.5Sb1.5Te3 films was obtained by Professor Z. Dashevsky with co-authors in 2020 [24].…”

Section: Introductionmentioning

confidence: 98%

Development of Thermal Detector Based on Flexible Film Thermoelectric Module

Kostyuk

Dzundza

Yavorsky

et al. 2021

Phys. Chem. Solid St.

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Thermal detectors find a significant niche in the market of modern sensors. Bi2T3 and PbTe semiconductors are effective thermoelectrics and excellent candidates for different applications. In the present work, a technology for fabrication of p-Bi0.5Sb1.5Te3 and n-PbTe films with the high thermoelectric efficiency on thin flexible polyimide substrate has been developed. The preparation of films was performed by flash evaporation method. The high sensitivity of the devices is due to the high Seebeck coefficient of 200 mV/K and reduction of thermal conductivity of thin thermoelectric film from the bulk value. The devices operate in the Johnson-Nyquist noise limit of the thermocouple. The performance enables fast and sensitive detection of low levels of thermal power and infrared radiation at room temperature.

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“…After that the nanopowder was compacted in a protective atmosphere at room temperature into tablets into a 20-mm diameter and 5-mm thickness under pressure of 1 GPa. Then, these tablets were densified by Spark Plasma Sintering (SPS) method, which was first developed by Prof. Z. Dashevsky for Bi2Te3 and PbTe thermoelectrics [19][20][21]. The schematic view of SPS technique set is presented in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…However such structures with dimensions in order some m can not be used for fabrication of the thermolectric devices in different real applications. Therefore researchers have turned their attention to the creation of bulk and film nanostructured thermoelectrics [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Development of Spark Plasma Syntering (SPS) technology for preparation of nanocrystalline p-type thermoelctrics based on (BiSb)2Te3

Kostyuk

Dzundza

Maksymuk³

et al. 2020

Phys. Chem. Solid St.

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Bismuth antimony telluride is the most commonly used commercial thermoelectric material for power generation and refrigeration over the temperature range of 200–400 K. Improving the performance of these materials is a complected balance of optimizing thermoelectric properties. Decreasing the grain size of Bi0.5Sb1.5Te3 significantly reduces the thermal conductivity due to the scattering phonons on the grain boundaries. In this work, it is shown the advances of spark plasma sintering (SPS) for the preparation of nanocrystalline p-type thermoelectrics based on Bi0.5Sb1.5Te3 at different temperatures (240, 350, 400oC). The complex study of structural and thermoelectric properties of Bi0.5Sb1.5Te3 were presented. The high dimensionless thermoelectric figure of merit ZT ~ 1 or some more over 300–400 K temperature range for nanocrystalline p-type Bi0.5Sb1.5Te3 was obtained.

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High thermoelectric performance of p-type Bi0.5Sb1.5Te3 films on flexible substrate

Cited by 37 publications

References 29 publications

Influence of Deformation on Pb_1−xIn_xTe_1−yI_y and Pb_1−x−ySn_xIn_yTe Films

Influence of Deformation on Pb_1−xIn_xTe_1−yI_y and Pb_1−x−ySn_xIn_yTe Films

Development of Thermal Detector Based on Flexible Film Thermoelectric Module

Development of Spark Plasma Syntering (SPS) technology for preparation of nanocrystalline p-type thermoelctrics based on (BiSb)2Te3

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High thermoelectric performance of p-type Bi0.5Sb1.5Te3 films on flexible substrate

Cited by 37 publications

References 29 publications

Influence of Deformation on Pb1−xInxTe1−yIy and Pb1−x−ySnxInyTe Films

Influence of Deformation on Pb1−xInxTe1−yIy and Pb1−x−ySnxInyTe Films

Development of Thermal Detector Based on Flexible Film Thermoelectric Module

Development of Spark Plasma Syntering (SPS) technology for preparation of nanocrystalline p-type thermoelctrics based on (BiSb)2Te3

Contact Info

Product

Resources

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Influence of Deformation on Pb_1−xIn_xTe_1−yI_y and Pb_1−x−ySn_xIn_yTe Films

Influence of Deformation on Pb_1−xIn_xTe_1−yI_y and Pb_1−x−ySn_xIn_yTe Films