Highly Luminescent Nanostructures and Methods of Producing Same
AssigneeNanosys, Inc.
InventorsWenzhuo Guo, Jian Chen, Robert Dubrow, William P. Freeman
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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.
Claims33
1-41. (canceled)
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 50 nm or less, and wherein the member nanostructures comprise InP.
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50-54. (canceled)
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67-70. (canceled)
A composition comprising a population of nanostructures, which population displays a photoluminescence quantum yield of 75% or greater, wherein the member nanostructures comprise InP and are substantially free of Ga.
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Dependencies are inferred from the claim text.