Thermoelectric power factor in semiconductors with buried epitaxial semimetallic nanoparticles
Joshua M. O. Zide(University of California, Santa Barbara), D. O. Klenov(University of California, Santa Barbara), Susanne Stemmer(University of California, Santa Barbara), A. C. Gossard(University of California, Santa Barbara), Gehong Zeng(University of California, Santa Barbara), John E. Bowers(University of California, Santa Barbara), Daryoosh Vashaee(University of California, Santa Cruz), Ali Shakouri(University of California, Santa Cruz)
Cited by 137
Abstract
We have grown composite epitaxial materials that consist of semimetallic ErAs nanoparticles embedded in a semiconducting In0.53Ga0.47As matrix both as superlattices and randomly distributed throughout the matrix. The presence of these particles increases the free electron concentration in the material while providing scattering centers for phonons. We measure electron concentration, mobility, and Seebeck coefficient of these materials and discuss their potential for use in thermoelectric power generators.
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