Patent application number | Description | Published |
20090025641 | METHOD, SYSTEM, AND APPARATUS FOR THE GROWTH OF ON-AXIS SiC AND SIMILAR SEMICONDUCTOR MATERIALS - A novel approach for the growth of high-quality on-axis epitaxial silicon carbide (SiC) films and boules, using the Chemical Vapor Deposition (CVD) technique, is described here. The method includes a method of substrate preparation, which allows for the growth of “on-axis” SiC films, plus an approach giving the opportunity to grow silicon carbide on singular (a small-angle miscut) substrates, using halogenated carbon-containing precursors (carbon tetrachloride, CCl | 01-29-2009 |
20110031572 | HIGH POWER DENSITY BETAVOLTAIC BATTERY - To increase total power in a betavoltaic device, it is desirable to have greater radioisotope material and/or semiconductor surface area, rather than greater radioisotope material volume. An example of this invention is a high power density betavoltaic battery. In one example of this invention, tritium is used as a fuel source. In other examples, radioisotopes, such as Nickel-63, Phosphorus-33 or promethium, may be used. The semiconductor used in this invention may include, but is not limited to, Si, GaAs, GaP, GaN, diamond, and SiC. For example (for purposes of illustration/example, only), tritium will be referenced as an exemplary fuel source, and SiC will be referenced as an exemplary semiconductor material. Other variations and examples are also discussed and given. | 02-10-2011 |
20110086456 | Betavoltaic battery with a shallow junction and a method for making same - This is a novel SiC betavoltaic device (as an example) which comprises one or more “ultra shallow” P+N | 04-14-2011 |
20110241144 | Nuclear Batteries - We introduce a new technology for Manufactureable, High Power Density, High Volume Utilization Nuclear Batteries. Betavoltaic batteries are an excellent choice for battery applications which require long life, high power density, or the ability to operate in harsh environments. In order to optimize the performance of betavoltaic batteries for these applications or any other application, it is desirable to maximize the efficiency of beta particle energy conversion into power, while at the same time increasing the power density of an overall device. The small (submicron) thickness of the active volume of both the isotope layer and the semiconductor device is due to the short absorption length of beta electrons. The absorption length determines the self absorption of the beta particles in the radioisotope layer as well as the range, or travel distance, of the betas in the semiconductor converter which is typically a semiconductor device comprising at least one PN junction. Various devices and methods to solve the current industry problems and limitations are presented here. | 10-06-2011 |
20110283933 | METHOD, SYSTEM, AND APPARATUS FOR THE GROWTH OF SiC AND RELATED OR SIMILAR MATERIAL, BY CHEMICAL VAPOR DEPOSITION, USING PRECURSORS IN MODIFIED COLD-WALL REACTOR - An approach for the growth of high-quality epitaxial silicon carbide (SiC) films and boules, using the Chemical Vapor Deposition (CVD) technique is described here. The method comprises modifications in the design of the typical cold-wall CVD reactors, providing a better temperature uniformity in the reactor bulk and a low temperature gradient in the vicinity of the substrate, and an approach to increase the silicon carbide growth rate and to improve the quality of the growing layers, using halogenated carbon-containing precursors (carbon tetrachloride CCl | 11-24-2011 |
20110287567 | Betavoltaic battery with a shallow junction and a method for making same - This is a novel SiC betavoltaic device (as an example) which comprises one or more “ultra shallow” P+N | 11-24-2011 |
20110298071 | HIGH POWER DENSITY BETAVOLTAIC BATTERY - To increase total power in a betavoltaic device, it is desirable to have greater radioisotope material and/or semiconductor surface area, rather than greater radioisotope material volume. An example of this invention is a high power density betavoltaic battery. In one example of this invention, tritium is used as a fuel source. In other examples, radioisotopes, such as Nickel-63, Phosphorus-33 or promethium, may be used. The semiconductor used in this invention may include, but is not limited to, Si, GaAs, GaP, GaN, diamond, and SiC. For example (for purposes of illustration/example, only), tritium will be referenced as an exemplary fuel source, and SiC will be referenced as an exemplary semiconductor material. Other variations and examples are also discussed and given. | 12-08-2011 |
20120149142 | Betavoltaic battery with a shallow junction and a method for making same - This is a novel SiC betavoltaic device (as an example) which comprises one or more “ultra shallow” P+ N | 06-14-2012 |