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Categories: advanced materials, energy

BSA 05-14: Thermoelectric Cobalt Oxide Compositions

BNL Reference Number: BSA 05-14

Patent Status: Application Number US-2007-0039641-A1 was published on February 22, 2007

Summary

Thermoelectric materials can convert heat into electricity and vice versa. In order to do this efficiently, they must have low resistivities and high power ratings. Cobalt oxides, or cobaltates, are layered materials that have good thermoelectric properties. So far, however, thin films of these materials suffer from degraded thermoelectric properties. When deposited on silicon-group substrates as in the current invention, however, these materials can be used to generate electricity from a thermal gradient or to generate or remove heat when an external voltage is applied.

Description

These compositions of thermoelectric cobalt oxide can be used in thermal management and generation of electrical power. The invention particularly relates to thin films of the material on common substrates such as silicon and silicon dioxide.

Journal Publication

• In situ growth of c-axis-oriented Ca₃Co₄O₉ thin films on Si „(100) (.pdf)

Have Questions?

For more information about this technology, contact Poornima Upadhya, (631) 344-4711.