CARBON-BASED MATERIAL FOR ELECTRON EMISSION SOURCE, ELECTRON EMISSION SOURCE CONTAINING IT, ELECTRON EMISSION DEVICE INCLUDING IT, AND METHOD OF MANUFACTURING ELECTRON EMISSION SOURCE

• Main Author: CHO SUNG-HEE
• Format: Patent
• Language: English
• Published: 12.06.2008
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRICITY

PROBLEM TO BE SOLVED: To provide a carbon-based material for an electron emission source; an electron emission source containing it; an electron emission device including the electron emission source; and a method of manufacturing the electron emission source. SOLUTION: In the carbon-based material for an electron emission source, the Raman spectrum obtained by the radiation of a laser beam having a wavelength of 488±10 nm, 514.5±110 nm, 633±10 nm or 785±10 nm has a second peak and a first peak in Raman shift ranges of 1,350±20 cm-1and 1,580±20 cm-1, the relative intensities h2 and h1 of the second peak and the first peak satisfy h2/h1<1.3, the half-value widths FWHM2 and FWHM1 of the second peak and the first peak satisfy FWHM2/FWHM1>1.2, or the relative intensities h2 and h1 and the half-value widths FWHM2 and FWHM1 satisfy h2/h1<1.3 and FWHM2/FWHM1>1.2. The electron emission source contains the carbon-based material. This electron emission device includes the electron emission source. The method of manufacturing the electron emission source is also provided. COPYRIGHT: (C)2008,JPO&INPIT