Abstract:
A carbon film (703) used for field emission cathode is a layer of thin carbon film on a substrate (803). The carbon film has a UV Raman band in range of 1578 cm to 1620 cm with full width at half maximum from 25 to 165 cm .
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method capable of obtaining a field-emission type electron source having with excellent electron emission characteristics without requiring an annealing treatment and having long life. SOLUTION: The manufacturing method is provided with an ion implantation process for implanting carbon ions 40 at least to a tip part of an emitter 18 after forming the emitter 18 mainly composed of silicon. The coordinates of points P 1 to P 6 on an orthogonal coordinate with one axis as representing energy (its unit is keV) of the carbon ion 40 and the other axis as representing an implantation amount (its unit is ×10 17 ions/cm 2 ) are shown as (energy, implantation amount), the carbon ion 40 is implanted under a condition in an area surrounded by connecting straight lines of 6 points of P 1 (5, 0.8), P 2 (5, 1.5), P 3 (10, 2.5), P 4 (15, 3.0), P 5 (15, 2.0), and P 6 (10, 1.6). COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
Carbon nanotubes and metal particle-containing carbon nanotubes are provided. The carbon nanotubes have increased surface area. A method of cutting carbon nanotubes is also provided. According to the method, the dispersion properties of the carbon nanotubes are improved by simplifying the structural changes and/or surface modifications of the carbon nanotubes, thereby enabling insertion of an active substance into the inner walls of the carbon nanotubes and increasing the insertion efficiency.
Abstract:
PROBLEM TO BE SOLVED: To provide an emitter of a field emission electron having a carbon film structure, which suppresses local electric field concentration, prevents current deterioration and a discharge phenomenon which accompanies thermal deterioration, suppresses the dispersion of electron emission, provides a desired function in a field emission device which applies the emitter, and to provide a field emission device that applies the emitter which fulfills a desired function and provides a more practical product. SOLUTION: The electron emitter is provided with a guard electrode 13 on an outer circumference side of the carbon film structure 10, formed on a substrate 7 by a plasma CVD method. The guard electrode 13 includes a convex-curved surface part (a curved-surface part which is curved to the opposite side, in the film-forming direction) 13a in a film-forming direction of the carbon film structure 10. The guard electrode having the curved surface part 13a, of which the curvature radius R1 on the outer circumference side of the guard electrode 13 is larger than a curvature radius R2 on a carbon film structure side, is applied. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide: an electron-emitting source; an electron-emitting element; and a method of manufacturing an electron-emitting source. SOLUTION: This electron-emitting source has a carbon-based substance, and a deterioration-preventing substance for the carbon-based substance, wherein binding energy between the deterioration-preventing substance for the carbon-based substance and external oxygen is larger than that between the carbon-based substance and the external oxygen. This electron-emitting element is provided with the electron-emitting source. This manufacturing method is provided for manufacturing the electron-emitting source. Accordingly, the electron-emitting source can have excellent field-emission efficiency, and long life. COPYRIGHT: (C)2009,JPO&INPIT