Title: Surface structures for enhancement of quantum yield in broad spectrum emission nanocrystals

Abstract

Disclosed are inorganic nanoparticles comprising a body comprising cadmium and/or zinc crystallized with selenium, sulfur, and/or tellurium; a multiplicity of phosphonic acid ligands comprising at least about 20% of the total surface ligand coverage; wherein the nanocrystal is capable of absorbing energy from a first electromagnetic region and capable of emitting light in a second electromagnetic region, wherein the maximum absorbance wavelength of the first electromagnetic region is different from the maximum emission wavelength of the second electromagnetic region, thereby providing a Stokes shift of at least about 20 nm, wherein the second electromagnetic region comprises an at least about 100 nm wide band of wavelengths, and wherein the nanoparticle exhibits has a quantum yield of at least about 10%. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Inventors:

Schreuder, Michael A.; McBride, James R.; Rosenthal, Sandra J.

Issue Date:

2014-07-22

Research Org.:

Vanderbilt Univ., Nashville, TN (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1149692

Patent Number(s):

8,784,698

Application Number:

13/115,001

Assignee:

Vanderbilt University (Nashville, TN)

DOE Contract Number:  

FG02-02ER45957

Resource Type:

Patent

Resource Relation:

Patent File Date: 2011 May 24

Country of Publication:

United States

Language:

English

Subject:

77 NANOSCIENCE AND NANOTECHNOLOGY