Comprising At Least One Long-range Structurally Disordered Material (e.g., One-dimensional Vertical Amorphous Superlattices) (epo) Patents (Class 257/E29.077)
Abstract: A light emitting diode structure and a method of forming a light emitting diode structure are provided. The structure includes a superlattice comprising, a first barrier layer; a first quantum well layer comprising a first metal-nitride based material formed on the first barrier layer; a second barrier layer formed on the first quantum well layer; and a second quantum well layer including the first metal-nitride based material formed on the second barrier layer; and wherein a difference between conduction band energy of the first quantum well layer and conduction band energy of the second quantum well layer is matched to a single or multiple longitudinal optical phonon energy for reducing electron kinetic energy in the superlattice.
Type:
Grant
Filed:
November 20, 2009
Date of Patent:
April 16, 2013
Assignee:
Agency for Science, Technology and Research
Inventors:
Wei Liu, Chew Beng Soh, Soo Jin Chua, Jing Hua Teng
Abstract: Provided are a ZnO-based thin film and a ZnO-based semiconductor device which allow: reduction in a burden on a manufacturing apparatus; improvement of controllability and reproducibility of doping; and obtaining p-type conduction without changing a crystalline structure. In order to be formed into a p-type ZnO-based thin film, a ZnO-based thin film is formed by employing as a basic structure a superlattice structure of a MgZnO/ZnO super lattice layer 3. This superlattice component is formed with a laminated structure which includes acceptor-doped MgZnO layers 3b and acceptor-doped ZnO layers 3a. Hence, it is possible to improve controllability and reproducibility of the doping, and to prevent a change in a crystalline structure due to a doping material.
Abstract: The present invention is disclosed that a device capable of normal incident detection of infrared light to efficiently convert infrared light into electric signals. The device includes a substrate, a first contact layer formed on the substrate, an active layer formed on the first contact layer, a barrier layer formed on the active layer and a second contact layer formed on the barrier layer, wherein the active layer includes multiple quantum dot layers.
Type:
Grant
Filed:
April 29, 2009
Date of Patent:
July 12, 2011
Assignee:
Academia Sinica
Inventors:
Shiang-Yu Wang, Hong-Shi Ling, Ming-Cheng Lo, Chien-Ping Lee
Abstract: In one embodiment, a method of producing an optoelectronic nanostructure includes preparing a substrate; providing a quantum well layer on the substrate; etching a volume of the substrate to produce a photonic crystal. The quantum dots are produced at multiple intersections of the quantum well layer within the photonic crystal. Multiple quantum well layers may also be provided so as to form multiple vertically aligned quantum dots. In another embodiment, an optoelectronic nanostructure includes a photonic crystal having a plurality of voids and interconnecting veins; a plurality of quantum dots arranged between the plurality of voids, wherein an electrical connection is provided to one or more of the plurality of quantum dots through an associated interconnecting vein.
Type:
Grant
Filed:
June 30, 2006
Date of Patent:
April 20, 2010
Assignee:
University of Delaware
Inventors:
Janusz Murakowski, Garrett Schneider, Dennis W. Prather
Abstract: A structure for a memory device including a plurality of substantially planar thin-film layers or a plurality of conformal thin-film layers is disclosed. The thin-film layers form a memory element that is electrically in series with first and second cladded conductors and operative to store data as a plurality of conductivity profiles. A select voltage applied across the first and second cladded conductors is operative to perform data operations on the memory device. The memory device may optionally include a non-ohmic device electrically in series with the memory element and the first and second cladded conductors. Fabrication of the memory device does not require the plurality of thin-film layers be etched in order to form the memory element. The memory element can include a CMO layer having a selectively crystallized polycrystalline portion and an amorphous portion. The cladded conductors can include a core material made from copper.
Type:
Application
Filed:
July 26, 2007
Publication date:
January 29, 2009
Applicant:
UNITY SEMICONDUCTOR CORPORATION
Inventors:
Robin Cheung, Darrell Rinerson, Travis Byonghyop Oh, Jon Bornstein, David Hansen
Abstract: A structure for a memory device including a plurality of substantially planar thin-film layers or a plurality of conformal thin-film layers is disclosed. The thin-film layers form a memory element that is electrically in series with first and second cladded conductors and operative to store data as a plurality of conductivity profiles. A select voltage applied across the first and second cladded conductors is operative to perform data operations on the memory device. The memory device may optionally include a non-ohmic device electrically in series with the memory element and the first and second cladded conductors. Fabrication of the memory device does not require the plurality of thin-film layers be etched in order to form the memory element. The memory element can include a CMO layer having a selectively crystallized polycrystalline portion and an amorphous portion. The cladded conductors can include a core material made from copper.
Type:
Application
Filed:
July 26, 2007
Publication date:
January 29, 2009
Applicant:
UNITY SEMICONDUCTOR CORPORATION
Inventors:
Robin Cheung, Darrell Rinerson, Travis Byonghyop Oh, Jon Bornstein, David Hansen