Title: Metal halide solid-state surface treatment for nanocrystal materials

Abstract

Methods of treating nanocrystal and/or quantum dot devices are described. The methods include contacting the nanocrystals and/or quantum dots with a solution including metal ions and halogen ions, such that the solution displaces native ligands present on the surface of the nanocrystals and/or quantum dots via ligand exchange.

Inventors:

Luther, Joseph M.; Crisp, Ryan; Beard, Matthew C.

Issue Date:

Tue Apr 26 00:00:00 EDT 2016

Research Org.:

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

Sponsoring Org.:

USDOE

OSTI Identifier:

1248864

Patent Number(s):

9324562

Application Number:

14/939,928

Assignee:

Alliance for Sustainable Energy, LLC (Golden, CO)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

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

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B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

B82Y30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites

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

H01L21/02568 - {Chalcogenide semiconducting materials not being oxides, e.g. ternary compounds}
H01L21/465 - Chemical or electrical treatment, e.g. electrolytic etching
H01L31/035218 - {the quantum structure being quantum dots}
H01L31/06 - characterised by at least one potential-jump barrier or surface barrier

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

Y02E10/50 - Photovoltaic [PV] energy

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DOE Contract Number:  

AC36-08GO28308

Resource Type:

Patent

Resource Relation:

Patent File Date: 2015 Nov 12

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY