Powdered fluorescent material and method for manufacturing the same, light-emitting device, and illumination apparatus

摘要

Powdered fluorescent material excited by visible light that emits visible light has particles with particle sizes of 20 mum or less in the content of below 2% by mass. The method for manufacturing a powdered fluorescent material comprises the steps of: sintering raw material powder of the fluorescent material; and chemically processing the sintered powder after said sintering with acid solution.