COATED PHOSPHOR AND METHOD FOR PRODUCING COATED PHOSPHOR

摘要

Provided is a coated phosphor in which the release of sulfur-based gas in high-temperature, high-humidity conditions can be suppressed. In a coated phosphor (1), a sulfide phosphor (2) is coated by a silicon dioxide film (4) containing a metal oxide powder (3). The coated phosphor (1) can be obtained by mixing the sulfide phosphor (2), an alkoxysilane, the metal oxide powder (3), and a catalyst in a solvent, and coating the sulfide phosphor (2) with the silicon dioxide film (4) containing the metal oxide powder (3) and formed from the alkoxysilane.