Jason D Forster

US Patent:

20170069813, Mar 9, 2017

Filed:

Sep 1, 2016

Appl. No.:

15/254412

Inventors:

Jeffrey J. Urban - Emeryville CA, US
Jared Lynch - Fremont CA, US
Nelson Coates - Oakland CA, US
Jason Forster - Berkeley CA, US
Ayaskanta Sahu - Berkeley CA, US
Michael Chabinyc - Santa Barbara CA, US
Boris Russ - Berkeley CA, US

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

H01L 35/16
H01L 35/02
C09D 5/24
C09D 1/00
C09D 5/26
H01L 35/34
C01B 19/00

Abstract:

This disclosure provides systems, methods, and apparatus related to thermoelectric materials. In one aspect, a method includes providing a plurality of nanostructures. The plurality of nanostructures comprise a thermoelectric material, with each nanostructure of the plurality of nanostructures having first ligands disposed on a surface of the nanostructure. The plurality of nanostructures is mixed with a solution containing second ligands and a ligand exchange process occurs in which the first ligands disposed on the plurality of nanostructures are replaced with the second ligands. The plurality of nanostructures is deposited on a substrate to form a layer. The layer is thermally annealed.

US Patent:

20170069815, Mar 9, 2017

Filed:

Sep 1, 2016

Appl. No.:

15/254918

Inventors:

Boris Russ - Berkeley CA, US
David Brown - Washington DC, US
Jared Lynch - Fremont CA, US
Tristan Day - Whittier CA, US
Nelson E. Coates - Oakland CA, US
Ayaskanta Sahu - Berkeley CA, US
Jason D. Forster - Berkeley CA, US
Jeffrey Snyder - Pasadena CA, US
Jeffrey J. Urban - Emeryville CA, US
Rachel A. Segalman - Santa Barbara CA, US

International Classification:

H01L 35/26
H01L 35/34
H01L 35/16

Abstract:

This disclosure provides systems, methods, and apparatus related to graded thermoelectric materials. In one aspect, a method includes providing a plurality of nanostructures. The plurality of nanostructures comprise a thermoelectric material, with nanostructures of the plurality of nanostructures having first ligands disposed on surfaces of the nanostructures. The plurality of nanostructures is deposited on a substrate to form a layer. The layer is contacted with a solution containing second ligands. A ligand exchange process occurs where some of the first ligands disposed on the plurality of nanostructures are replaced with the second ligands. A first region of the layer is removed from contact with the solution so that the ligand exchange process does not occur in the first region of the layer, with the ligand exchange process occurring in the layer in contact with the solution. The layer is then removed from contact with the solution.