Segmented Power Generator Modules of Bi2Te3 and ErAs:InGaAlAs Embedded with ErAs Nanoparticles
Abstract
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 (mu)m thickness Bi2Te3 and 50 (mu)m 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 for middle and long wavelength phonons, provide charge carriers, and form local Schottky barriers for electron filtering. The thermoelectric properties of ErAs:InGaAlAs were characterized by variable temperature measurements of thermal conductivity, electrical conductivity and Seebeck coefficient from 300 K to 600 K. Generator modules of Bi2Te3 and ErAs:InGaAlAs segmented elements were fabricated and an output power over 5.5 W was measured. The performance of the thermoelectric generator modules can further be improved by improving the thermoelectric properties of the element material, and reducing the electrical and thermal parasitic losses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 29, 2007
- Accession Number
- ADA636942
Entities
People
- Ali Shakouri
- Arthur C. Gossard
- Gehong Zeng
- Hong Lu
- Je-hyeong Bahk
- John E. Bowers
- Joshua M. Zide
- Rajeev Singh
- Suzanne L. Singer
- Zhixi Bian
Organizations
- University of California, Santa Barbara