Title: Group IV nanocrystals with ion-exchangeable surface ligands and methods of making the same

Abstract

Methods are described that include reacting a starting nanocrystal that includes a starting nanocrystal core and a covalently bound surface species to create an ion-exchangeable (IE) nanocrystal that includes a surface charge and a first ion-exchangeable (IE) surface ligand ionically bound to the surface charge, where the starting nanocrystal core includes a group IV element.

Inventors:

Wheeler, Lance M.; Nichols, Asa W.; Chernomordik, Boris D.; Anderson, Nicholas C.; Beard, Matthew C.; Neale, Nathan R.

Issue Date:

Tue Jan 09 00:00:00 EST 2018

Research Org.:

National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1416730

Patent Number(s):

9862841

Application Number:

15/388,415

Assignee:

Alliance for Sustainable Energy, LLC (Golden, CO)

Patent Classifications (CPCs):

C - CHEMISTRY C09 - DYES C09D - COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

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C - CHEMISTRY C09 - DYES C09D - COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS

C09D5/24 - Electrically-conducting paints {
C09D5/32 - Radiation-absorbing paints {

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

H01L31/022425 - {for solar cells}
H01L31/028 - including, apart from doping material or other impurities, only elements of Group IV of the Periodic System
H01L31/032 - including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312
H01L31/035218 - {the quantum structure being quantum dots}
H01L31/1808 - {including only Ge}
H01L31/1884 - {Manufacture of transparent electrodes, e.g. TCO, ITO}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E10/547 - Monocrystalline silicon PV cells

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DOE Contract Number:  

AC36-08GO28308

Resource Type:

Patent

Resource Relation:

Patent File Date: 2016 Dec 22

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY