Room-Temperature Fabrication of a Flexible Thermoelectric Generator Using a Dry-Spray Deposition System
| Autor: | Jung-Oh Choi, Sung-Hoon Ahn, Dae-Seob Song |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Fabrication business.industry Scanning electron microscope chemistry.chemical_element 02 engineering and technology Substrate (electronics) 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Thermoelectric generator chemistry Seebeck coefficient 0103 physical sciences Thermoelectric effect Materials Chemistry Deposition (phase transition) Optoelectronics Electrical and Electronic Engineering 0210 nano-technology Tellurium business |
| Zdroj: | Journal of Electronic Materials. 45:2286-2290 |
| ISSN: | 1543-186X 0361-5235 |
| DOI: | 10.1007/s11664-015-4306-3 |
| Popis: | We present a flexible thermoelectric (TE) generator with titanium dioxide (TiO2), antimony (Sb), and tellurium (Te) powders fabricated by a nanoparticle deposition system (NPDS). NPDS is a novel low-energy consumption dry-spray method that enables the deposition of inorganic materials on substrates at room temperature and under low vacuum. TiO2 nanopowders were dispersed on a TE powder for improved adhesion between TE films and the substrate. Film morphologies were investigated using field-emission scanning electron microscopy, and the phase structure was analyzed by x-ray diffraction. A TE leg, deposited with 3 wt.% TiO2 content, had the largest Seebeck coefficient of approximately 160 μV/K. The prototype TE generator consisted of 16 TE legs linked by silver interconnects over an area of 20 mm × 60 mm. The prototype produced a voltage of 48.91 mV and a maximum power output of 0.18 μW from a temperature gradient of 20 K. The values are comparable to that of conventional methods. These results suggest that flexible TE generators can be fabricated by energy efficient methods, although internal and contact resistances must be decreased. |
| Databáze: | OpenAIRE |
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