| 摘要 |
PURPOSE:To provide a luminescent compsn. which exhibits a highly effective luminescence under condition of excitation by means of low-velocity electron beams, by mixing particles of a fluorescent substance with a sol xomprising In2O3 as its major component, followed by drying, so as to allow a conductive metal oxide mainly comprised of In2O3 to adhere to the surface of fluorescent substance particles. CONSTITUTION:A sol compsn. comprising indium oxide as its major component (e.g., indium oxide sol or indium-tin sol compsn.) is manufacture by a method comprising contacting a solution contg. a solution cong. an inorg. indium salt such as InCl3 as its major component with an ion exchange resin, or other methods. this sol compsn. is mixed with particles of a fluorescent substance (e.g., ZnS:Zn). The mixture is dehydrated and dried so as to allow particles or a film of a conductive metal oxide comprising indium oxide as its major component to adhere to the surface of fluorescent substance particles. Thus, the desired luminescent compsn. is obtd. The luminescent compsn. obtd. exhibits a highly effective luminescence under the condition of excitation by low-velocity electron beams such as those of 100V or less.
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