𝔖 Bobbio Scriptorium
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Semimetal/Semiconductor Nanocomposites for Thermoelectrics

✍ Scribed by Hong Lu; Peter G. Burke; Arthur C. Gossard; Gehong Zeng; Ashok T. Ramu; Je-Hyeong Bahk; John E. Bowers

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
550 KB
Volume
23
Category
Article
ISSN
0935-9648

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✦ Synopsis

Abstract

In this work, we present research on semimetal‐semiconductor nanocomposites grown by molecular beam epitaxy (MBE) for thermoelectric applications. We study several different III‐V semiconductors embedded with semimetallic rare earth‐group V (RE‐V) compounds, but focus is given here to ErSb:In~x~Ga~1‐x~Sb as a promising p‐type thermoelectric material. Nano­structures of RE‐V compounds are formed and embedded within the III‐V semiconductor matrix. By codoping the nanocomposites with the appropriate dopants, both n‐type and p‐type materials have been made for thermoelectric applications. The thermoelectric properties have been engineered for enhanced thermoelectric device performance. Segmented thermoelectric power generator modules using 50 μm thick Er‐containing nanocomposites have been fabricated and measured. Research on different rare earth elements for thermoelectrics is discussed.

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