USA flag logo/image

An Official Website of the United States Government

Improved Thermoelectric Materials: Skutterudite Superlattices Prepared via…

Award Information

Department of Defense
Award ID:
Program Year/Program:
1997 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
UMPQUA Research Company
OR Myrtle Creek, OR 97457-0102
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 1997
Title: Improved Thermoelectric Materials: Skutterudite Superlattices Prepared via Kinetic Trapping from Modulated Reactants
Agency / Branch: DOD / NAVY
Contract: N/A
Award Amount: $70,000.00


An innovative pathway toward the synthesis of thin film and bulk thermoelectric materials based on skutterudite structures is proposed. Filled skutterudites possess large unit cell sizes, low electrical resistivities, and encaged rare earth atoms which will rattle in their oversized environment scattering phonons responsible for the undesired thermal conductivity. These physical properties make them prime candidates for thermoelectric materials. Their potential for being synthesized as the conducting layer of a quantum well superlattice with its higher density of states for the conducting layer will produce a thin film material with a potentially high thermoelectric figure of merit. The innovative pathway proposed by Umpqua Research Company (UMPQUA) involves the physical vapor deposition of elemental layers and controlled thermal annealing to produce the desired Skutterudite material. A series of Lanthanum filled (Co/Fe)4Sb12 skutterudite materials will be made with various Co:Fe ratios to optimize its thermoelectric properties. Using experience gained, a series of LaFe4Sb12/AlSb superlattice structures will be synthesized and optimized for their thermoelectric properties.

Principal Investigator:

James R. Akse

Business Contact:

Small Business Information at Submission:

Umpqua Research Co
P.O. Box 609 Myrtle Creek, OR 97457

EIN/Tax ID: 930789314
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No