Pacific Light Technologies Corp.

Osram Opto Semiconductors Gmbh

Intel Corporation

Osram Opto Semiconductor Gmbh

Juanita N Kurtin

Georgeta Masson

Steven M Hughes

Weiwen Zhao

Benjamin Daniel Mangum

Kari N Haley

Brian Theobald

Matthew J Carillo

Oun-Ho Park

Nathan Evan Stott

Vivek K De

Ali Keshavarzi

Norbert Puetz

Alex C Mayer

Joseph A Treadway

Oun Ho Park

Alex R Guichard

Paul-Emile B Trudeau

Colin C Reese

Manav Sheoran

Yagnaseni Ghosh

Tanay Karnik

Michael Jansen

Arijit Raychowdhury

Maria J Anc

Alex Christopher Mayer

Timothy L Deeter

Erik Johansson

Janice C Lee

Shawn Scully

Nathan Mclaughlin

Shawn R Scully

Matthew Bertram

Julian Osinski

Ron Nelson

Colin Reese

Semiconductor structures having a nanocrystalline core and corresponding nanocrystalline shell and insulator coating, wherein the semiconductor structure includes an anisotropic nanocrystalline core composed of a first semiconductor material, and an anisotropic nanocrystalline shell composed of a second, different, semiconductor material surrounding the anisotropic nanocrystalline core. The anisotropic nanocrystalline core and the anisotropic nanocrystalline shell form a quantum dot. An insulator layer encapsulates the nanocrystalline shell and anisotropic nanocrystalline core.

Method for forming a composite having semiconductor structures including a nanocrystalline core and shell embedded in a matrix

A conversion layer, a light emitting device and a method for producing a conversion layer are disclosed. In an embodiment a conversion layer includes light-converting nanocrystals, an encapsulation surrounding the light-converting nanocrystals and ligands bonded to a surface of the encapsulation, wherein encapsulated light-converting nanocrystals are crosslinked by the ligands.

Conversion layer, light emitting device and method of producing a conversion layer

The light conversion efficiency of a solar cell is enhanced by using an optical downshifting layer in cooperation with a photovoltaic material. The optical downshifting layer converts photons having wavelengths in a supplemental light absorption spectrum into photons having a wavelength in the primary light absorption spectrum of the photovoltaic materiaL The cost effectiveness and efficiency of solar cells platforms can be increased by relaxing the range of the primary light absorption spectrum of the photovoltaic materiaL The optical downshifting layer can be applied as a low cost solution processed film composed of highly absorbing and emissive quantum dot heterostructure nanomaterial embedded in an inert matrix to improve the short wavelength response to the photovoltaic materiaL The enhanced efficiency provided by the optical downshifting layer permits advantageous modifications to the solar cell platform that enhances its efficiency as well.

Optical downshifting layer

A structure may include a quantum structure and a barrier layer that may coat the quantum structure. The barrier layer may include aluminum and at least one material that is X1, X2, Si, O, or combinations thereof where X1 and X2 are monovalent positively charged elements and/or divalent positively charged elements. In addition, an agglomerate, a conversion element, and a method of producing a structure are disclosed.

Structure, agglomerate, conversion element and method of producing a structure

Quantum dot delivery methods are described. In a first example, a method of delivering or storing a plurality of nano-particles involves providing a plurality of nano-particles. The method also involves forming a dispersion of the plurality of nano-particles in a medium for delivery or storage, wherein the medium is free of organic solvent. In a second example, a method of delivering or storing a plurality of nano-particles involves providing a plurality of nano-particles in an organic solvent. The method also involves drying the plurality of nano-particles for delivery or storage, the drying removing entirely all of the organic solvent.

Quantum dot (QD) delivery method

Quantum dot polymer composites for on-chip light emitting diode applications are described. In an example, a composite for on-chip light emitting diode application includes a polymer matrix, a plurality of quantum dots dispersed in the polymer matrix, and a base dispersed in the polymer matrix.

Quantum dot (QD) polymer composites for on-chip light emitting diode (LED) applications

The light conversion efficiency of a solar cell () is enhanced by using an optical downshifting layer () in cooperation with a photovoltaic material (). The optical downshifting layer converts photons () having wavelengths in a supplemental light absorption spectrum into photons () having a wavelength in the primary light absorption spectrum of the photovoltaic material. The cost effectiveness and efficiency of solar cells platforms () can be increased by relaxing the range of the primary light absorption spectrum of the photovoltaic material. The optical downshifting layer can be applied as a low cost solution processed film composed of highly absorbing and emissive quantum dot heterostructure nanomaterial embedded in an inert matrix to improve the short wavelength response of the photovoltaic material. The enhanced efficiency provided by the optical downshifting layer permits advantageous modifications to the solar cell platform that enhances its efficiency as well.

Semiconductor structures having insulators coatings and methods of fabricating semiconductor structures having insulators coatings are described. In an example, a method of coating a semiconductor structure involves adding a silicon-containing silica precursor species to a solution of nanocrystals. The method also involves, subsequently, forming a silica-based insulator layer on the nanocrystals from a reaction involving the silicon-containing silica precursor species. The method also involves adding additional amounts of the silicon-containing silica precursor species after initial forming of the silica-based insulator layer while continuing to form the silica-based insulator layer to finally encapsulate each of the nanocrystals.

Quantum dots having a nanocrystalline core, a nanocrystalline shell surrounding the core, and an insulator coating for the shell

A semiconductor structure includes a quantum dot. A polymeric organic layer encapsulates the quantum dot to create a coated quantum dot, and at least one additional organic layer and/or inorganic insulator layer encapsulates the coated quantum dot, wherein forming the one or more layers of organic material that encapsulates the coated quantum dot comprises forming a plurality of layers of polymers using a layer-by-layer deposition process.

Composition of, and method for forming, a semiconductor structure with polymer and insulator coatings

A solar concentrator module () employs a luminescent concentrator material () between photovoltaic cells () having their charge-carrier separation junctions () parallel to front surfaces () of photovoltaic materialof the photovoltaic cells (). Intercell areas () covered by the luminescent concentrator material () occupy from 2 to 50% of the total surface area of the solar concentrator modules (). The luminescent concentrator material () preferably employs quantum dot heterostructures, and the photovoltaic cells () preferably employ low-cost high-efficiency photovoltaic materials (), such as silicon-based photovoltaic materials.

Quantum dot and luminescent material made therefrom

A semiconductor structure includes a nanocrystalline core comprising a first semiconductor material, and at least one nanocrystalline shell comprising a second, different, semiconductor material that at least partially surrounds the nanocrystalline core. The nanocrystalline core and the nanocrystalline shell(s) form a quantum dot. An insulator layer encapsulates the quantum dot to create a coated quantum dot, and at least one additional insulator layer encapsulates the coated quantum dot.

Composition of, and method for forming, a semiconductor structure with multiple insulator coatings

A semiconductor structure has a nano-crystalline core comprising a first semiconductor material and a nano-crystalline shell comprising a second, different semiconductor material at least partially surrounding the nano-crystalline core. Either one, but not both, of the core and shell are based on cadmium-containing semiconductor materials.

Low-cadmium nanocrystalline quantum dot heterostructure

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Hillsboro, OR, United States of America

Juanita N Kurtin