Title: Nanocrystal doped matrixes

Abstract

Matrixes doped with semiconductor nanocrystals are provided. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes of the present invention can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes of the present invention can also be used as filters and antireflective coatings on optical devices and as down-converting layers. Processes for producing matrixes comprising semiconductor nanocrystals are also provided. Nanostructures having high quantum efficiency, small size, and/or a narrow size distribution are also described, as are methods of producing indium phosphide nanostructures and core-shell nanostructures with Group II-VI shells.

Inventors:

Parce, J Wallace ^[1]; Bernatis, Paul ^[2]; Dubrow, Robert ^[3]; Freeman, William P ^[4]; Gamoras, Joel ^[5]; Kan, Shihai ^[6]; Meisel, Andreas ^[7]; Qian, Baixin ^[2]; Whiteford, Jeffery A ^[8]; Ziebarth, Jonathan ^[1]

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+ Show Inventor Affiliations

1. Palo Alto, CA
2. Sunnyvale, CA
3. San Carlos, CA
4. San Mateo, CA
5. Vallejo, CA
6. San Jose, CA
7. Redwood City, CA
8. Belmont, CA

Issue Date:

2010-01-12

Research Org.:

Nanosys, Inc. (Palo Alto, CA)

Sponsoring Org.:

USDOE

OSTI Identifier:

1014076

Patent Number(s):

7645397

Application Number:

US Patent Application 11/492,717

Assignee:

Nanosys, Inc. (Palo Alto, CA)

Patent Classifications (CPCs):

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

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

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

B82Y20/00 - Nanooptics, e.g. quantum optics or photonic crystals
B82Y30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B19/007 - {Tellurides or selenides of metals

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F

C01G9/08 - Sulfides

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2002/72 - by d-values or two theta-values, e.g. as X-ray diagram
C01P2002/84 - by UV- or VIS- data
C01P2004/04 - obtained by TEM, STEM, STM or AFM
C01P2004/64 - Nanometer sized, i.e. from 1-100 nanometer
C01P2004/80 - Particles consisting of a mixture of two or more inorganic phases
C01P2004/84 - one phase coated with the other

C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

C09K11/02 - Use of particular materials as binders, particle coatings or suspension media therefor
C09K11/565 - {with zinc cadmium}
C09K11/70 - containing phosphorus
C09K11/883 - {with zinc or cadmium}

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

G02B1/11 - Anti-reflection coatings
G02B2207/101 - Nanooptics
G02B3/0087 - {with index gradient}

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

H01L33/502 - {Wavelength conversion materials}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10S977/783 - Organic host/matrix, e.g. lipid

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T428/2982 - Particulate matter [e.g., sphere, flake, etc.]
Y10T428/2991 - Coated
Y10T428/2993 - Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
Y10T428/2995 - Silane, siloxane or silicone coating

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DOE Contract Number:  

FG02-04ER84020

Resource Type:

Patent

Country of Publication:

United States

Language:

English