Patent application number | Description | Published |
20080303378 | SURFACE ACOUSTIC WAVE (SAW) DEVICES BASED ON CUBIC BORON NITRIDE/DIAMOND COMPOSITE STRUCTURES - A surface acoustic wave (SAW) device which is made of cBN/diamond composite structures and the fabrication method are disclosed. In the SAW device based on cubic boron nitride and diamond composite structures, the diamond hard layer includes randomly-oriented polycrystalline diamond (poly-D), oriented (heteroepitaxial) diamond, single-crystal diamond wafers and nanocrystalline diamond (nano-D) films. The cBN film with a sound velocity close to that of diamond serves as the piezoelectric layer, which was directly deposited on diamond hard layer without any soft sp | 12-11-2008 |
20090021161 | ORGANIC ELECTROLUMINESCENT DEVICES INCORPORATING UV-ILLUMINATED FLUOROCARBON LAYERS - A simple and efficient method of increasing conductivity of the fluorocarbon film is disclosed. By illuminating the fluorocarbon film under ultraviolet light (UV-CFx), the film conductivity can be increased by five orders of magnitude. Devices using such a UV-treated, conductive fluorocarbon film as a buffer layer give much better performance in terms of lower operational voltage and enhanced operational stability. The improved smoothness and lowered hole injection barrier height with UV-CFx are responsible for the enhanced performance of electroluminescent devices. | 01-22-2009 |
20090022969 | Ultrahard multilayer coating comprising nanocrystalline diamond and nanocrystalline cubic boron nitride - A multilayer coating (MLC) is composed of two chemically different layered nanocrystalline materials, nanodiamond (nanoD) and nano-cubic boron nitride (nono-cBN). The structure of the MLC and fabrication sequence of layered structure are disclosed. The base layer is preferably nanoD and is the first deposited layer serving as an accommodation layer on a pretreated substrate. It can be designed with a larger thickness whereas subsequent alternate nano-cBN and nanoD layers are typically prepared with a thickness of 2 to 100 nm. The thickness of these layers can be engineered for a specific use. The deposition of the nanoD layer, by either cold or thermal plasma CVD, is preceded by diamond nucleation on a pretreated and/or precoated substrate, which has the capacity to accommodate the MLC and provides excellent adhesion. Nano-cBN layers are directly grown on nanodiamond crystallites using ion-assisted physical vapor deposition (PVD) and ion-assisted plasma enhanced chemical vapor deposition (PECVD), again followed by nanodiamond deposition using CVD methods in cycles until the intended number of layers of the MLC is obtained. | 01-22-2009 |
20090102356 | NOVEL ORGANIC COMPOUND HAVING ELECTRON-TRANSPORTING AND/OR HOLE-BLOCKING PERFORMANCE AND ITS USE AND OLEDs COMPRISING THE COMPOUND - Disclosed herein are several organic compounds having electron-transporting and/or hole-blocking performance and their preparation method and use and the OLEDs comprising the organic compound. The organic compounds exhibit high ionization potential (IP), electron affinity (Ea), glass transition temperature (Tg) and high electron mobility, and are a kind of good electron-transporting material with good hole-blocking ability. The devices comprising these compounds as one of the emitting layer, electron-transporting layer (ETL) and hole-blocking layer (HBL) show improved efficiency and better color purity. | 04-23-2009 |
20090233445 | METHOD OF MAKING DIAMOND NANOPILLARS - A method for fabricating diamond nanopillars includes forming a diamond film on a substrate, depositing a metal mask layer on the diamond film, and etching the diamond film coated with the metal mask layer to form diamond nanopillars below the mask layer. The method may also comprise forming diamond nuclei on the substrate prior to forming the diamond film. Typically, a semiconductor substrate, an insulating substrate, a metal substrate, or an alloy substrate is used. | 09-17-2009 |
20100148662 | ORGANIC ELECTROLUMINESCENCE DEVICE - An electroluminescence device has an anode, a cathode and an emitting layer located between the anode and the cathode. The emitting layer contains a compound selected from a group consisting of neutral red and its derivatives. | 06-17-2010 |