Investigation of the effects of compressive and tensile strain on n-type bismuth telluride and p-type antimony telluride nanocrystalline thin films for use in flexible thermoelectric generators

ABSTRACT:The present work highlights the progress in the field of flexible thermoelectric generator (f-TEGs) fabricated by 3-D printing strategy on the typing paper substrate. In this study, printable thermoelectric paste was developed. The dimension of each planer thermoelectric element is 30mm*4mm with a thickness of 50 μm for P-type Bismuth Tellurium (Bi2Te3)-based/ poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) leg. A single thermoleg with this dimension can generate a voltage of 5.38 mV at a temperature difference of 70 K. The calculated Seebeck Coefficient of a single thermoleg is 76.86 μV/K. This work demonstrates that low-cost printing technology is promising for the fabrication of f-TEGs.

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Optimized structure of tubular thermoelectric generators using n-type Bi2Te3 and p-type Sb2Te3 thin films on flexible substrate for energy harvesting

Sensors and Actuators A Physical ◽

10.1016/j.sna.2020.112199 ◽

2020 ◽

Vol 313 ◽

pp. 112199 ◽

Cited By ~ 1

Author(s):

Akihiro Kobayashi ◽

Ryota Konagaya ◽

Saburo Tanaka ◽

Masayuki Takashiri

Keyword(s):

Thin Films ◽

Energy Harvesting ◽

Flexible Substrate ◽

Thermoelectric Generators ◽

P Type

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Large thermoelectric power variations in epitaxial thin films of layered perovskite GdBaCo2O5.5±δ with a different preferred orientation and strain

Journal of Materials Chemistry A ◽

10.1039/d0ta04781c ◽

2020 ◽

Vol 8 (38) ◽

pp. 19975-19983

Author(s):

Arindom Chatterjee ◽

Emigdio Chavez-Angel ◽

Belén Ballesteros ◽

José Manuel Caicedo ◽

Jessica Padilla-Pantoja ◽

...

Keyword(s):

Thin Films ◽

Thermoelectric Power ◽

Thermoelectric Properties ◽

Tensile Strain ◽

Preferred Orientation ◽

Oxygen Stoichiometry ◽

Layered Perovskite ◽

Epitaxial Thin Films ◽

P Type

Oxygen stoichiometry in epitaxial GdBaCo2O5.5±δ films accommodates the strain, which substantially affects thermoelectric properties, bringing the material from p-type (tensile strain c⊥-oriented on STO) to n-type thermopower (compressive b⊥ on LAO).

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Fabrication Process of Antimony Telluride and Bismuth Telluride Micro Thermoelectric Generator

International Journal of Automation Technology ◽

10.20965/ijat.2015.p0612 ◽

2015 ◽

Vol 9 (6) ◽

pp. 612-618

Author(s):

Mizue Mizoshiri ◽

◽

Masashi Mikami ◽

Kimihiro Ozaki ◽

Keyword(s):

Bismuth Telluride ◽

Thermoelectric Generator ◽

Fabrication Process ◽

Thermoelectric Generators ◽

Antimony Telluride ◽

Semiconductor Fabrication ◽

Micro Thermoelectric Generator ◽

Key Techniques

This paper describes the process of fabricating micro thermoelectric generators (μ-TEGs) based on antimony telluride (Sb-Te) and bismuth telluride (Bi-Te). These materials have excellent thermoelectric (TE) conversion properties. The deposition and patterning processes for thermoelectric films are key techniques in the fabrication of μ-TEGs. However, it is difficult to form TE micropatterns using conventional semiconductor technologies because Sb-Te and Bi-Te are brittle and difficult to etch. Therefore, a semiconductor fabrication process is developed for TE film patterning. Here, various processes for depositing Sb-Te and Bi-Te TE films are described. Then, the combinations of the deposition and patterning techniques are reviewed. Finally, the generation properties of the μ-TEGs are summarized.

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