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Title: Graded thermoelectric materials

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.

Inventors:
; ; ; ; ; ; ; ; ;
Issue Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1771487
Patent Number(s):
10797215
Application Number:
15/254,918
Assignee:
US Dept. of Energy (Washington, DC)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
DOE Contract Number:  
AC02-05CH11231
Resource Type:
Patent
Resource Relation:
Patent File Date: 09/01/2016
Country of Publication:
United States
Language:
English

Citation Formats

Russ, Boris, Brown, David, Lynch, Jared, Day, Tristan, Coates, Nelson E., Sahu, Ayaskanta, Forster, Jason D., Snyder, Jeffrey, Urban, Jeffrey J., and Segalman, Rachel A. Graded thermoelectric materials. United States: N. p., 2020. Web.
Russ, Boris, Brown, David, Lynch, Jared, Day, Tristan, Coates, Nelson E., Sahu, Ayaskanta, Forster, Jason D., Snyder, Jeffrey, Urban, Jeffrey J., & Segalman, Rachel A. Graded thermoelectric materials. United States.
Russ, Boris, Brown, David, Lynch, Jared, Day, Tristan, Coates, Nelson E., Sahu, Ayaskanta, Forster, Jason D., Snyder, Jeffrey, Urban, Jeffrey J., and Segalman, Rachel A. Tue . "Graded thermoelectric materials". United States. https://www.osti.gov/servlets/purl/1771487.
@article{osti_1771487,
title = {Graded thermoelectric materials},
author = {Russ, Boris and Brown, David and Lynch, Jared and Day, Tristan and Coates, Nelson E. and Sahu, Ayaskanta and Forster, Jason D. and Snyder, Jeffrey and Urban, Jeffrey J. and Segalman, Rachel A.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {10}
}

Works referenced in this record:

PbSe Nanocrystal Solids for n- and p-Channel Thin Film Field-Effect Transistors
journal, October 2005


Effect of Interfacial Properties on Polymer-Nanocrystal Thermoelectric Transport
journal, January 2013


Copper ion liquid-like thermoelectrics
journal, March 2012


Compositions and methods for modulation of nanostructure energy levels
patent, October 2013


Fabrication of Bismuth Telluride Thermoelectric Films Containing Conductive Polymers Using a Printing Method
journal, February 2013


Thermoelectric material, and thermoelectric element and thermoelectric module comprising same
patent, July 2013


Synthesis and Thermoelectric Characterization of Bi2Te3 Nanoparticles
journal, November 2009


Modulation of Thermoelectric Power Factor via Radial Dopant Inhomogeneity in B-Doped Si Nanowires
journal, August 2014


Nanostructured layers of thermoelectric materials
patent, January 2018


Prospects for thermoelectricity in quantum dot hybrid arrays
journal, December 2015


Post-deposition encapsulation of nanostructures: compositions, devices and systems incorporating same
patent, September 2009


Metal-free Inorganic Ligands for Colloidal Nanocrystals: S2–, HS, Se2–, HSe, Te2–, HTe, TeS32–, OH, and NH2– as Surface Ligands
journal, July 2011


Rational Synthesis of Ultrathin n-Type Bi2Te3 Nanowires with Enhanced Thermoelectric Properties
journal, November 2011


Enhanced Thermopower in PbSe Nanocrystal Quantum Dot Superlattices
journal, August 2008


Materials and Mechanics for Stretchable Electronics
journal, March 2010


Ligand Coupling Symmetry Correlates with Thermopower Enhancement in Small-Molecule/Nanocrystal Hybrid Materials
journal, September 2014


Enhancement of Thermoelectric Properties by Modulation-Doping in Silicon Germanium Alloy Nanocomposites
journal, January 2012


Synthesis and Characterization of Monodisperse Nanocrystals and Close-Packed Nanocrystal Assemblies
journal, August 2000


Compositions and methods for modulation of nanostructure energy levels
patent, October 2015


Design Principle of Telluride-Based Nanowire Heterostructures for Potential Thermoelectric Applications
journal, June 2012


Improved performance and stability in quantum dot solar cells through band alignment engineering
journal, May 2014


Post-deposition encapsulation of nanostructures: compositions, devices and systems incorporating same
patent, September 2007


High thermoelectric performance by resonant dopant indium in nanostructured SnTe
journal, July 2013


Improved thermoelectric cooling based on the Thomson effect
journal, July 2012


Power factor enhanced thermoelectric material and method of producing same
patent, September 2015


Tuning the Excitonic and Plasmonic Properties of Copper Chalcogenide Nanocrystals
journal, January 2012

  • Kriegel, Ilka; Jiang, Chengyang; Rodríguez-Fernández, Jessica
  • Journal of the American Chemical Society, Vol. 134, Issue 3, p. 1583-1590
  • https://doi.org/10.1021/ja207798q

Enhanced Thermoelectric Properties in Bulk Nanowire Heterostructure-Based Nanocomposites through Minority Carrier Blocking
journal, January 2015