Patents – Mildred Dresselhaus

Dresselhaus Page · Resources with Additional Information

(The U.S. Government has rights in this invention pursuant to … grant … awarded by the Department of Energy)

The present invention provides methods for synthesis of IV VI nanostructures, and thermoelectric compositions formed of such structures. In one aspect, the method includes forming a solution of a Group IV reagent, a Group VI reagent and a surfactant. A reducing agent can be added to the solution, and the resultant solution can be maintained at an elevated temperature, e.g., in a range of about C. to about C., for a duration sufficient for generating nanoparticles as binary alloys of the IV VI elements.

US 7,465,871 NANOCOMPOSITES WITH HIGH THERMOELECTRIC FIGURES OF MERIT  --  Dresselhaus, Mildred; Chen, Gang; Ren, Zhifeng; December 16, 2008
The present invention is generally directed to nanocomposite thermoelectric materials that exhibit enhanced thermoelectric properties. The nanocomposite materials include two or more components, with at least one of the components forming nano-sized structures within the composite material. The components are chosen such that thermal conductivity of the composite is decreased without substantially diminishing the composite's electrical conductivity. Suitable component materials exhibit similar electronic band structures. For example, a band-edge gap between at least one of a conduction band or a valence band of one component material and a corresponding band of the other component material at interfaces between the components can be less than about 5k.sub.BT, wherein k.sub.B is the Boltzman constant and T is an average temperature of said nanocomposite composition.

US 7,586,033  METAL-DOPED SEMICONDUCTOR NANOPARTICLES AND METHODS OF SYNTHESIS THEREOF  --  Dresselhaus, Mildred; et. al.; September 8, 2009
(The U.S. Government has rights in this invention pursuant to … grant … awarded by the Department of Energy)
The present invention generally relates to binary or higher order semiconductor nanoparticles doped with a metallic element, and thermoelectric compositions incorporating such nanoparticles. In one aspect, the present invention provides a thermoelectric composition comprising a plurality of nanoparticles each of which includes an alloy matrix formed of a Group IV element and Group VI element and a metallic dopant distributed within the matrix.


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