Thermoelectric Device Fabrication Using Thermal Spray and Laser Micromachining

Tewolde, Mahder; Fu, Gaosheng; Hwang, David J.; Zuo, Lei; Sampath, Sanjay; Longtin, Jon P.

doi:10.1007/s11666-015-0351-y

Cited by 14 publications

(4 citation statements)

References 32 publications

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“…Moreover, thermal spray and laser micromachining eliminate the need for adhesive or mechanical bonding. Tewolde et al [ 89 ] applied the thermal spray technique to fabricate dielectric layers, element interconnects, and thermoelectric legs. Sequentially, the electrically isolated features were patterned by laser micromachining.…”

Section: Flexible Thermoelectric Devicesmentioning

confidence: 99%

Toughening Thermoelectric Materials: From Mechanisms to Applications

Feng

Cao

et al. 2023

IJMS

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With the tendency of thermoelectric semiconductor devices towards miniaturization, integration, and flexibility, there is an urgent need to develop high-performance thermoelectric materials. Compared with the continuously enhanced thermoelectric properties of thermoelectric materials, the understanding of toughening mechanisms lags behind. Recent advances in thermoelectric materials with novel crystal structures show intrinsic ductility. In addition, some promising toughening strategies provide new opportunities for further improving the mechanical strength and ductility of thermoelectric materials. The synergistic mechanisms between microstructure-mechanical performances are expected to show a large set of potential applications in flexible thermoelectric devices. This review explores enlightening research into recent intrinsically ductile thermoelectric materials and promising toughening strategies of thermoelectric materials to elucidate their applications in the field of flexible thermoelectric devices.

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Section: Flexible Thermoelectric Devicesmentioning

confidence: 99%

Toughening Thermoelectric Materials: From Mechanisms to Applications

Feng

Cao

et al. 2023

IJMS

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“…Since SnSe inherently has p-type characteristics, many studies on p-type have been conducted, but both n-type and p-type are needed to fabricate devices [10]. accordingly, research was conducted to change the type of SnSe with good thermoelectric properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Polycrystalline Bi-Doped Snse by Mechanical Alloying and Hydrogen Reduction

Jang,

Moon,

Byun

2024

Archives of Metallurgy and Materials

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In this study, Bi-doped SnSe was fabricated through the high energy ball milling and the hydrogen reduction of Bi2O3, and its thermoelectric properties were analyzed. The specimen with pure-Bi was fabricated as a control group and properties were compared. In the case of specimens with added Bi2O3, when sintering was performed in a hydrogen atmosphere, Bi2O3 with a high melting point was reduced to Bi with a relatively low melting point. At this time, because of the appearance of the liquid phase, the orientation of the (400) plane increased, and the density was improved. As a result, the change of SnSe to n-type was confirmed in the temperature range of 300 K - 773 K due to Bi doping. Additionally, when Bi2O3 was used instead of pure-Bi, the thermal conductivity, which is inversely proportional to the figure of merit, decreased, and the electrical conductivity increased, resulting in an improvement in the figure of merit.

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“…Thermal spraying is an additive manufacturing technique used in many industrial applications because of its high deposition rate (4kg/h), its high flexibility in terms of sprayable materials (metals, complex multi-component alloys, ceramics, ...), its thermal protection properties, the high possible coating thicknesses (from about 20 µm to several mm) and its low cost [10]. Although this technique offers new and unique ways of integration, it has so far received little attention from the TE community and deserves further investigation [11][12]. The main advantages of the thermoelectric generator manufactured by thermal spraying are: -to create an intimate contact with the heat source and thus limit the parasitic contact thermal resistances; -to provide thin or thick coatings of different materials and for multi functionalities (insulation or electrical conduction, energy conversion, …); -to enable complex architectures that are not possible with current commercial TEGs; -to be economical and scalable to facilitate a transfer to the industry.…”

Section: Introductionmentioning

confidence: 99%

Electrical Properties of Half Heusler Coatings Depending on Spray Process

Darut

Portebois

Vitu

et al. 2021

Thermal Spray 2021: Proceedings From the International Thermal Spray Conference

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Microstructure and physicochemical properties of a thermally sprayed coating depend on the dynamics of the particles interacting with the spray jet. This is especially the case for electrical properties. In this study, different spraying processes were used to spray p-type and n-type half-Heusler powders. Thermoelectric powders, Hf20Zr75Ti05CoSb80Sn20 (p-type) and Hf60Zr40NiSn98Sb02 (n-type), were selected due to their interesting electrical properties. The spray processes were evaluated based on coating composition and mechanical property measurements. The only coatings of practical interest were those that were plasma sprayed and they were examined in detail to assess the effect of process parameters on coating properties.

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Thermoelectric Device Fabrication Using Thermal Spray and Laser Micromachining

Cited by 14 publications

References 32 publications

Toughening Thermoelectric Materials: From Mechanisms to Applications

Toughening Thermoelectric Materials: From Mechanisms to Applications

Synthesis of Polycrystalline Bi-Doped Snse by Mechanical Alloying and Hydrogen Reduction

Electrical Properties of Half Heusler Coatings Depending on Spray Process

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