High Coefficient of Performance HgCdTe And Metallic Superlattice-Based Thermoelectric Coolers

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX11CF03P
Agency Tracking Number: 105173
Amount: $99,994.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: S3.02
Solicitation Number: N/A
Small Business Information
590 Territorial Drive, Suite B, Bolingbrook, IL, -
DUNS: 068568588
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Silviu Velicu
 Principal Investigator
 (630) 771-0203
Business Contact
 Sivalingam Sivananthan
Title: CEO
Phone: (630) 771-0201
Email: ssivananthan@epir.com
Research Institution
We propose the development of nanoscale superlattices (SLs) as the active elements of high efficiency thermoelectric coolers.Recent models predict that the thermoelectric figure of merit ZT can reach 4 for elements fabricated from HgCdTe-based SLs andcould exceed 6 for related metal/semiconductor SLs. The feasibility of using HgCdTe and metal-based SL materials with embeddednanodefects for increased hot-carrier transport during thermoelectric cooling will be demonstrated in the proposed Phase 1 effort. Wewill perform calculations to optimize the material parameters of HgCdTe- and metal-based SL structures to maximize ZT. Next, we willuse our extensive experience in molecular beam epitaxy to grow the designed structures. Finally, we will develop device structuresand metallization methods appropriate for performing ZT measurements, measure the ZTs of fabricated devices and compare resultswith theory.

* Information listed above is at the time of submission. *

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