University of Florida Research Foundation, Incorporated

Planar Systems, Inc.

Nanophotonica

University of Central Florida Research Foundation, Inc.

International Technology Center

Paul Howard Holloway

Ying Zheng

Jiangeng Xue

Lei Qian

Mark Rogers Davidson

John Robert Reynolds

Sey-Shing Sun

Swadeshmukul Santra

Kirk S Schanze

Gary Elder McGuire

James M Boncella

Alexandre Titov

Jake Hyvonen

Mostafa Abboudi

Yun Wang

Heesun Yang

Eric R Dickey

Richard T Tuenge

Olga Alexander Shenderova

Olga Aleksandrovna Shenderova

Christopher N King

Rolf E Hummel

Jean Tokarz

P Niel Yocom

Arthur Foster Hebard

Glenn A Walter

David B Tanner

Robert A Mericle

Yixing Yang

Subir Kumar Sabui

Ann Marie Fuller

Jesse R Manders

Weiran Cao

Claus Schollhorn

Jihua Yang

John S Lewis, Iii

Jihun Choi

Karen Elizabeth Waldrip

Teng-Kuan Tseng

Philip D Rack

Krishna Acharya

Luiz G Jacobsohn

Christian F Schaus

Benjamin Scott Harrison

Tim Foley

Sriram Ramakrishnan

A process for improving the external quantum efficiency of a light emitting diode (LED) is provided by exposing one or more components of an LED, a partially assembled LED, or a completely assembled LED to an amount of hydrogen or hydrogen gas, or to an atmosphere containing higher quantities of hydrogen or hydrogen gas for a period of exposure time. Kits and processes for constructing a light emitting diode having an improved external quantum efficiency is further provided, which includes exposing one or more components of an LED, a partially assembled LED, or a completely assembled LED to an amount of hydrogen or hydrogen gas, or to an atmosphere containing higher quantities of hydrogen or hydrogen gas for a period of exposure time.

Processes for improving efficiency of light emitting diodes

A method for synthesizing a quantum dot light emitting diode by providing a glass substrate. A QD-LED stack is formed upon the glass substrate. This QD-LED stack is diffused with an active reagent. The QD-LED stack is encapsulated with a curable resin. The curable resin is cured with UV light.

Method and structure of promoting positive efficiency aging and stabilization of quantum dot light-emitting diode

Quantum dot light emitting diodes (QD-LEDs) are formed that are transparent and emit light from the top and bottom faces. At least one electrode of the QD-LEDs is a dielectric/metal/dielectric layered structure, where the first dielectric comprises metal oxide nanoparticles or polymer-nanoparticle blends and is 10 to 40 nm in thickness, the metal layer is 5 to 25 nm in thickness, and the second dielectric layer is a nanoparticulate, polymer-nanoparticle blend or continuous layer of 30 to 200 nm in thickness and is situated distal to the light emitting layer of the QD-LED.

Transparent quantum dot light-emitting diodes with dielectric/metal/dielectric electrode

A solar cell includes a low work function cathode, an active layer of an organic-inorganic nanoparticle composite, a ZnO nanoparticle layer situated between and physically contacting the cathode and active layers; and a transparent high work function anode that is a bilayer electrode. The inclusion of the ZnO nanoparticle layer results in a solar cell displaying a conversion efficiency increase and reduces the device degradation rate. Embodiments of the invention are directed to novel ZnO nanoparticles that are advantageous for use as the ZnO nanoparticle layers of the novel solar cells and a method to prepare the ZnO nanoparticles.

Air stable organic-inorganic nanoparticles hybrid solar cells

Embodiments of the invention are directed to quantum dot light emitting diodes (QD-LEDs) where the electron injection and transport layer comprises inorganic nanoparticles (I-NPs). The use of I-NPs results in an improved QD-LED over those having a conventional organic based electron injection and transport layer and does not require chemical reaction to form the inorganic layer. In one embodiment of the invention the hole injection and transport layer can be metal oxide nanoparticles (MO-NPs) which allows the entire device to have the stability of an all inorganic system and permit formation of the QD-LED by a series of relatively inexpensive steps involving deposition of suspensions of nanoparticles and removing the suspending vehicle.

Stable and all solution processable quantum dot light-emitting diodes

Embodiments of the present disclosure provide for nanoparticles, methods of making nanoparticles, materials including nanoparticles, the use of materials including nanoparticles, and the like.

Index of refraction matched nanoparticles and methods of use

The present invention relates to fluorescent, radio-opaque and magnetic quantum nanoparticles, useful as multifunctional contrast agents or probes for in vivo bioimaging, and methods of their use. The invention provides for multifaceted bioimaging (e.g., intra-arterial pre-operative brain mapping and broad based in vivo diagnostic imaging), including imaging of various cell types, such as stem cells.

Nanoparticles and their use for multifunctional bioimaging

The subject invention pertains to a method, apparatus, and composition of matter for producing near-infrared (near-IR) radiation. The subject invention can incorporate a polymer and a metal-containing compound, wherein the metal-containing compound can incorporate a metal-ligand complex, wherein when the metal-ligand complex becomes excited, energy is transferred from the ligand to the metal, wherein, the energy transferred to the metal by sensitization is emitted as near-infrared radiation. In a specific embodiment, the subject invention relates to a composition of matter having a luminescent polymer and a metal containing compound where the metal containing compound incorporates a metal-ligand complex such that the absorption spectrum of the metal-ligand complex at least partially overlaps with the emission spectrum of the luminescent polymer. As the absorption spectrum of the metal-ligand complex at least partially overlaps with the emission spectrum of the luminescent polymer, when the luminescent polymer becomes electronically excited energy can be transferred from the luminescent polymer to the metal-ligand complex. At least a portion of the energy transferred from the luminescent polymer to the metal-ligand complex can then be emitted by the metal-ligand complex as near-infrared radiation. The subject invention can incorporate polymers which are conjugated or non-conjugated and luminescent or non-luminescent. In a specific embodiment, conjugated polymers which are luminescent can be utilized.

Method and apparatus for producing near-infrared radiation

A partially passivating core shell particle includes a luminescent nanocrystal core, and a partially passivating semiconducting core shell on a surface of the nanocrystal. The shell allows selected analytes to alter a luminescent response of the core shell particle. A quantum dot-based sensing system includes at least one partially passivating core shell particle, a light source for irradiating the partially passivating core shell particle, and a light detector for receiving emissions from the particle, wherein emissions from the core shell particle change in response to the presence of at least one analyte.

Partially passivated quantum dots, process for making, and sensors therefrom

A system and method for identifying explosive or other target materials includes the steps of irradiating a first location and a second location spaced apart from the first location from a sample suspected of including explosives with ultraviolet, visible or infrared light, measuring reflected light emanated from the first sample location (R) and reflected light emanated from the second sample location (R), and calculating a normalized difference in reflectivity (&#x394;R/), wherein=(R+R)/2 is an average reflectivity. A differential reflection spectrum (DRS) is then generated for the sample where &#x394;R=R&#x2212;Ris the difference of the reflectivities of the first and the second sample location. One or more explosives if present are identified in the sample based on comparing the DRS for said sample to at least one reference DRS.

Differential reflection spectroscopy system and method for detecting explosives and other target materials

A phototherapy bandage capable of providing radiation to a localized area of a patient for accelerating wound healing and pain relief, photodynamic therapy, and for aesthetic applications. The phototherapy bandage may include a flexible light source that is continuous across the bandage for providing a selected light, such as a visible light, a near-infrared light, or other light, having substantially similar intensity across the bandage. The bandage may also be flexible and capable of being attached to a patient without interfering with the patient's daily routine. The phototherapy bandage may easily conform to the curves of a patient and may come in a variety of exterior shapes and sizes.

Phototherapy bandage

A method of forming metal oxide powders includes the steps of solid state mixing of at least one metal nitrate salt, such as Fe(NO)or a combination of metal nitrate salts such as Zn(NO),6HO and Ga(NO), xHO, and at least one reducing organic acid, such as tartaric or citric acid. The mixture is heated to form a metal oxide powder, such as alpha-iron oxide (&#x3b1;-FeO) or a mixed metal powder such as zinc gallate phosphor (ZnGaO). A metal oxide precursor intermediate can be formed and then heated to form the metal oxide powder.

Method of producing nanosized oxide powders

An imaging device () can include a plurality of lenses () mounted on a multi-dimensional support structure (), a plurality of optical detectors () corresponding to the plurality of lenses for capturing an optical signal from at least two lenses among the plurality of lenses, and a processor () for combining the optical signal from at least two lenses to form an image and electronically controlling the field of view and a resolution of the image. The plurality of lenses each can include an array of sub-wavelength apertures or a plurality of photon sieve lenses ().

High resolution multi-lens imaging device

The present invention provides new and useful methods for preparing rare-earth oxysulfide phosphors. Advantageously, in accordance with the methods of the subject invention, rare-earth oxysulfide phosphors can be prepared with lower reaction temperatures and fewer processing steps than methods currently in use. In a preferred embodiment, the process of the subject invention involves blending two different rare-earth nitrate salts and a sulfidizing agent. Then, the mixture is heated at relatively low temperatures until the rare-earth oxysulfide phosphor is produced.

Methods for preparing rare-earth oxysulfide phosphors, and resulting materials

The luminance of a phosphor suitable for an alternating current thin-film electroluminescent device is substantially improved according to the present invention by including an alkali halide. The alkali halide included within the bulk of the phosphor material results in providing a significant number of trapping states which trap free electrons within the phosphor material. The addition of the trapping states (added defects) within the bulk tend to control the electrical and optical characteristics of the phosphor material. This reduces asymmetric light output characteristics of traditional phosphor material, reduces asymmetric current movement within the phosphor material, and decreases the influence of the interfaces between the phosphor material and insulating materials resulting in decreased aging and increased brightness.

Electroluminescent phosphor thin films with increased brightness that includes an alkali halide

Growing community of inventors

Gainesville, FL, United States of America

Paul Howard Holloway