Highly luminescent nanostructures and methods of producing same
AssigneeNanosys, Inc.
InventorsWenzhuo Guo, Jian Chen, Robert Dubrow, William P. Freeman
Life of this patent
Estimating the term…
Abstract
Highly luminescent nanostructures, particularly highly luminescent quantum dots, are provided. The nanostructures have high photoluminescence quantum yields and in certain embodiments emit light at particular wavelengths and have a narrow size distribution. The nanostructures can comprise ligands, including C5-C8 carboxylic acid ligands employed during shell formation and/or dicarboxylic or polycarboxylic acid ligands provided after synthesis. Processes for producing such highly luminescent nanostructures are also provided, including methods for enriching nanostructure cores with indium and techniques for shell synthesis.
Claims28
A composition comprising a population of nanostructures, which population displays a photoluminescence quantum yield of 70% or greater, wherein a photoluminescence spectrum of the population has a full width at half maximum of 35 nm or less, wherein a photoluminescence spectrum of the population has an emission maximum between 450 nm and 750 nm, and wherein the nanostructures comprise InP.
A composition comprising a population of nanostructures, which population displays a photoluminescence quantum yield of 70% or greater, wherein a photoluminescence spectrum of the population has a full width at half maximum of 35 nm or less, comprising a C5-C8 carboxylic acid bound to the nanostructures, and wherein the nanostructures comprise InP.
A composition comprising a population of nanostructures, which population displays a photoluminescence quantum yield of 70% or greater, wherein a photoluminescence spectrum of the population has a full width at half maximum of 35 nm or less, wherein the nanostructures are embedded in a matrix, and wherein the nanostructures comprise InP.
Dependencies are inferred from the claim text.