Electrochemical Deposition and Characterization of Thermoelectric Ternary (Bi x Sb1−x )2Te3 and Bi2(Te1−y Se y )3 Thin Films

Ma, Yi; Wijesekara, Waruna; Palmqvist, Anders

doi:10.1007/s11664-011-1790-y

Cited by 18 publications

(5 citation statements)

References 25 publications

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“…Due to the high saturated vapour pressure of Te, Te is easily volatilized out during annealing of Bi 2 Te 3 [164][165][166][167], thus inducing a deviation in composition. Therefore, the Bi 2 Te 3 annealing is generally carried out in a protective atmosphere, such as N 2 , N 2 + 4% H 2 , Ar + 4% H 2 , or Te-rich one, to inhibit Te volatilization and oxidation as well [167][168][169][170]. In addition, the annealing temperature and duration can also have a great influence on properties.…”

Section: Annealing Regimementioning

confidence: 99%

“…Kang et al [191] obtained Bi 2− x Sb x Te 3 by pulse deposition in CA added electrolyte. The reaction formula of Bi 2− x Sb x Te 3 can be expressed as [168] …”

Section: Nanocomposite and Ternary Alloymentioning

confidence: 99%

“…The composition with the best TE properties has been proven to be Bi 2 Te 2.7 Se 0.3 [209,210]. Ma et al synthesized Bi 2 Te 3− y Se y thin film using potentiostatic deposition on Au-coated silicon substrates in aqueous acidic solutions at RT [168]. The corresponding formula is …”

Section: Nanocomposite and Ternary Alloymentioning

confidence: 99%

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Recent advances of electrodeposition of Bi₂Te₃and its thermoelectric applications in miniaturized power generation and cooling

Shi

Zheng

Wang

et al. 2022

International Materials Reviews

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Thermoelectric (TE) technology enables direct conversion between thermal and electrical energies and thus has been regarded as an alternative for energy harvesting and refrigeration. Bismuth telluride (Bi 2 Te 3 ) is the most widely used TE material at room temperature due to its high figure of merit (∼1). Since the first publication on the electrodeposition of Bi 2 Te 3 films in 1994, a large number of publications has emerged in the last two decades, owing to its advantages such as simple and safe preparation, high deposition rate, convenient micromachining, good compatibility to semiconductor microfabrication techniques and so on. This article reviews the recent research progress in the electrodeposition of Bi 2 Te 3 and its application in TE devices. Additionally, an outlook towards the future development of this area has also been discussed.

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Section: Annealing Regimementioning

confidence: 99%

“…Kang et al [191] obtained Bi 2− x Sb x Te 3 by pulse deposition in CA added electrolyte. The reaction formula of Bi 2− x Sb x Te 3 can be expressed as [168] …”

Section: Nanocomposite and Ternary Alloymentioning

confidence: 99%

See 1 more Smart Citation

Recent advances of electrodeposition of Bi₂Te₃and its thermoelectric applications in miniaturized power generation and cooling

Shi

Zheng

Wang

et al. 2022

International Materials Reviews

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“…For example, partial replacement of the low natural abundance of tellurium by selenium contributes strongly to a sustainable thermoelectric solution [15][16][17]. Several groups have produced ternary Bi2Te3-xSex thin films via electrodeposition [18][19][20][21][22][23][24][25], pulsed laser deposition [26], sputtering [27,28], and thermal evaporation [29][30][31]. Electrodeposition allows spatial selective deposition, but the thermoelectric properties from room temperature deposition are often inferior and post-deposition annealing is normally required for improved performance [18].…”

Section: Introductionmentioning

confidence: 99%

Improved thermoelectric performance of Bi2Se3 alloyed Bi2Te3 thin films via low pressure chemical vapour deposition

Newbrook

Richards

Greenacre

et al. 2020

Journal of Alloys and Compounds

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Thermoelectric generators are attractive for autonomous sensor systems where regular battery replacement would not only cause an increase in the maintenance costs and discontinuity in the operation, but also destroy the concept of a truly autonomous system. Micro-thermoelectric generators utilise thin films of material for energy harvesting which can greatly reduce the amount of material used, which is especially important for rare elements such as tellurium. Thin films of Bi2Te3 were successfully prepared via a single source precursor CVD method. The thermoelectric performance of these films is improved by alloying a Bi2Se3 precursor to deposit ternary Bi2Te3-xSex. The composition of the ternary system is tuned to optimise the combination of carrier concentration and mobility to give a three-fold enhancement of the thermoelectric power factor at 300K, and six-fold enhancement at 500K, with respect to Bi2Te3. This improvement from the substitution of Te with Se is believed to be due to donor effects, as well as point defects caused by this substitution.

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“…Interest in thermoelectric (TE) materials for harvesting unused thermal energy is increasing day by day. Great focus on TE material development has led to some ground‐breaking innovations during the last decade, such that nanolevel materials , new combinations of bulk and nanomaterials , new material developing techniques were established. However, thermoelectric generator (TEG) design techniques have received much less attention.…”

Section: Introductionmentioning

confidence: 99%

Expanding the reduced-current approach for thermoelectric generators to achieve higher volumetric power density

Wijesekara

Rosendahl

2014

Phys. Status Solidi A

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Thermoelectrics are candidate niche electrical generator devices for energy management. At present, scientists are more focused on thermoelectric (TE) material development, but the TE module design procedure is still in a relatively virgin state. One of the most well-known methods is the reduced current approach (RCA) for TE module design, where the same current is induced through the p and n legs of the thermoelectric generator (TEG). The current density of each element is manipulated by changing the area of both legs. This technique leads to a TE module architecture based on the most efficient configuration of both p and n legs. In the current paper, we apply an extended version of this technique, to show how a TE module with a higher volumetric power density can be designed, compared to the original RCA. Our studies indicate that for some combinations of p and n material properties, optima yielding significant material savings without compromising power output can be determined. The current study has been directed towards obtaining high power output from high-temperature TEGs, rather than focusing on efficiency enhancement.

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Electrochemical Deposition and Characterization of Thermoelectric Ternary (Bi x Sb1−x )2Te3 and Bi2(Te1−y Se y )3 Thin Films

Cited by 18 publications

References 25 publications

Recent advances of electrodeposition of Bi₂Te₃and its thermoelectric applications in miniaturized power generation and cooling

Recent advances of electrodeposition of Bi₂Te₃and its thermoelectric applications in miniaturized power generation and cooling

Improved thermoelectric performance of Bi2Se3 alloyed Bi2Te3 thin films via low pressure chemical vapour deposition

Expanding the reduced-current approach for thermoelectric generators to achieve higher volumetric power density

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Electrochemical Deposition and Characterization of Thermoelectric Ternary (Bi x Sb1−x )2Te3 and Bi2(Te1−y Se y )3 Thin Films

Cited by 18 publications

References 25 publications

Recent advances of electrodeposition of Bi2Te3and its thermoelectric applications in miniaturized power generation and cooling

Recent advances of electrodeposition of Bi2Te3and its thermoelectric applications in miniaturized power generation and cooling

Improved thermoelectric performance of Bi2Se3 alloyed Bi2Te3 thin films via low pressure chemical vapour deposition

Expanding the reduced-current approach for thermoelectric generators to achieve higher volumetric power density

Contact Info

Product

Resources

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Recent advances of electrodeposition of Bi₂Te₃and its thermoelectric applications in miniaturized power generation and cooling

Recent advances of electrodeposition of Bi₂Te₃and its thermoelectric applications in miniaturized power generation and cooling