| abstract |
(57) [Summary] [Structure] A metal compound containing zinc is vaporized into a raw material gas, and the raw material gas is introduced into a high-temperature reaction tube using a carrier gas containing oxygen, and the raw material gas is introduced into the reaction tube. Ultra-fine zinc oxide particles having a mean particle size of 0.005 to 0.2 μm and a substantially spherical shape, which are obtained by a thermal decomposition reaction and an oxidation reaction. [Effect] The zinc oxide ultrafine particles of the present invention have extremely high transparency in the visible light region and extremely high shielding properties in the ultraviolet B and A regions. |