Its manufacturing method and Li-containing α- sialon-based phosphor particles, image display device and lighting equipment

摘要

An inert gas atmosphere by mixing a nitrogen-containing silicon compound powder, an aluminum source containing AlN, a Li source and a Eu source or silicon nitride containing nitrogen at normal pressure, the starting and fired at 1500~1800 ℃ an inert gas atmosphere to give a lithium-containing α- sialon powder of the material was added and mixed lithium source added to the powder, containing nitrogen at normal pressure, 1100 ℃ or more or a temperature lower than the sintering temperature , re-fired at 1600 ℃ lower than 1100 ℃ 1600 ℃ or more less than the production of Li-containing α- sialon phosphor particles. And an image display apparatus and lighting fixture optical absorption Li fluorescing short length (Li)-containing α- sialon-based phosphor, to improve the fluorescence intensity, using the same.