6 Watt Segmented Power Generator Modules using Bi 2 Te 3 and ( InGaAs ) 1 - x ( InAlAs ) x Elements Embedded with ErAs Nanoparticles
نویسندگان
چکیده
We report the fabrication and characterization of segmented element power generator modules of 16 x 16 thermoelectric elements consisting of 0.8 mm thick Bi2Te3 and 50 μm thick ErAs:(InGaAs)1-x(InAlAs)x with 0.6% ErAs by volume. Erbium Arsenide metallic nanoparticles are incorporated to create scattering centers for middle and long wavelength phonons, and to form local potential barriers for electron filtering. The thermoelectric properties of ErAs:(InGaAs)1-x(InAlAs)x were characterized in terms of electrical conductivity and Seebeck coefficient from 300 K up to 830 K. Generator modules of Bi2Te3 and ErAs:(InGaAs)1-x(InAlAs)x segmented elements were fabricated and an output power of 6.3 W was measured. 3D finite modeling shows that the performance of thermoelectric generator modules can further be enhanced by the improvement of the thermoelectric properties of the element materials, and reducing the electrical and thermal parasitic losses.
منابع مشابه
Segmented Power Generator Modules of Bi2Te3 and ErAs:InGaAlAs Embedded with ErAs Nanoparticles
We report the fabrication and characterization of segmented element power generator modules of 254 thermoelectric elements. The element is 1 mm × 1 mm in area, which consists of 300 μm thickness Bi2Te3 and 50 μm thickness ErAs:(InGaAs)1-x(InAlAs)x, so that each segment can work at different temperature ranges. Erbium arsenide metallic nanoparticles are incorporated to create scattering centers ...
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1.—Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA 93106, USA. 2.—Materials Department, University of California, Santa Barbara, CA 93106, USA. 3.—Electrical and Computer Engineering Department, University of Delaware, Newark, DE 19716, USA. 4.—Electrical Engineering Department, University of California, Santa Cruz, CA 95064, USA. 5.—Department of ...
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