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|1. (WO2015119125) PRODUCTION METHOD FOR PHOSPHOR MICROPARTICLES, PHOSPHOR THIN FILM, WAVELENGTH CONVERSION FILM, WAVELENGTH CONVERSION DEVICE, AND SOLAR CELL|
|Applicants:||NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
NGK INSULATORS, LTD.
|Title:||PRODUCTION METHOD FOR PHOSPHOR MICROPARTICLES, PHOSPHOR THIN FILM, WAVELENGTH CONVERSION FILM, WAVELENGTH CONVERSION DEVICE, AND SOLAR CELL|
The present invention pertains to a production method for phosphor microparticles, a phosphor thin film, a wavelength conversion film, a wavelength conversion device, and a solar cell. A production method for phosphor microparticles in which phosphor microparticles having a perovskite structure indicated by (Ca, Sr) TiO3: Pr3+ and having a particle diameter of no more than 100 nm at most are produced, said production method having a step in which a raw material selected from Ca, Sr, and Ti ions, an oxide or a hydride is caused to have a hydrothermal reaction with a raw material comprising Pr ions, in water in a subcritical to a supercritical state, the molar ratio of (Ca+Sr)/Ti in the raw material composition being 1.0-2.5.