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4195results about How to "High bulk density" patented technology

Photovoltaic devices printed from nanostructured particles

Methods and devices are provided for high-throughput printing of semiconductor precursor layer from microflake particles. In one embodiment, a solar cell is provided that comprises of a substrate, a back electrode formed over the substrate, a p-type semiconductor thin film formed over the back electrode, an n-type semiconductor thin film formed so as to constitute a pn junction with the p-type semiconductor thin film, and a transparent electrode formed over the n-type semiconductor thin film. The p-type semiconductor thin film results by processing a dense film formed from a plurality of microflakes having a material composition containing at least one element from Groups IB, IIIA, and / or VIA, wherein the dense film has a void volume of about 26% or less. The dense film may be a substantially void free film.
Owner:AERIS CAPITAL SUSTAINABLE IP

High-throughput printing of semiconductor precursor layer from inter-metallic microflake articles

Methods and devices are provided for high-throughput printing of semiconductor precursor layer from microflake particles. In one embodiment, the method comprises of transforming non-planar or planar precursor materials in an appropriate vehicle under the appropriate conditions to create dispersions of planar particles with stoichiometric ratios of elements equal to that of the feedstock or precursor materials, even after settling. In particular, planar particles disperse more easily, form much denser coatings (or form coatings with more interparticle contact area), and anneal into fused, dense films at a lower temperature and / or time than their counterparts made from spherical nanoparticles. These planar particles may be microflakes that have a high aspect ratio. The resulting dense film formed from microflakes are particularly useful in forming photovoltaic devices. In one embodiment, at least one set of the particles in the ink may be inter-metallic flake particles (microflake or nanoflake) containing at least one group IB-IIIA inter-metallic alloy phase.
Owner:AERIS CAPITAL SUSTAINABLE IP

Methods and apparatus for forming uniform particle layers of phosphor material on a surface

A method for forming a layer of an LED phosphor material includes disposing a first surface in a proximity of a powder that includes an LED phosphor material, forming electrostatic charges on the first surface, and forming a layer of the LED phosphor material on the first surface at least partially by using the electrostatic charges. In an embodiment, the method includes disposing the first surface in an interior of a chamber and forming an airborne distribution of the powder in the interior of the chamber in a vicinity of the first surface. In another embodiment, the method includes providing a reservoir of the powder and applying to said phosphor powder an electrostatic charge opposite to that of said electrostatic charge on the first surface.
Owner:ACHROLUX

Dynamic frequency tuning of electric and magnetic metamaterial response

InactiveUS20090096545A1High packing densityLow cost fabricationResonant circuit detailsSemiconductor/solid-state device manufacturingPhysicsInductor
A geometrically modifiable resonator is comprised of a resonator disposed on a substrate, and a means for geometrically modifying the resonator. The geometrically modifiable resonator can achieve active optical and / or electronic control of the frequency response in metamaterials and / or frequency selective surfaces, potentially with sub-picosecond response times. Additionally, the methods taught here can be applied to discrete geometrically modifiable circuit components such as inductors and capacitors. Principally, controlled conductivity regions, using either reversible photodoping or voltage induced depletion activation, are used to modify the geometries of circuit components, thus allowing frequency tuning of resonators without otherwise affecting the bulk substrate electrical properties. The concept is valid over any frequency range in which metamaterials are designed to operate.
Owner:TRIAD NAT SECURITY LLC
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