Composite powder, surface treatment composite powder, resin composition, cured body, optical semiconductor light emitting device

摘要

PROBLEM TO BE SOLVED: To provide composite powder which can be used as a wavelength conversion material excellent in light-emitting efficiency; surface-treated composite powder; a resin composition; a cured body; and an optical semiconductor light-emitting device.SOLUTION: There are provided a composite body which contains a fluoride and a phosphor, where a crystallite diameter of the fluoride is 90 nm or more and 150 nm or less, a crystallite diameter of the phosphor is 100 nm or more and 250 nm or less, and light-emitting efficiency when formed into an LED package is 90 lm/W or more.SELECTED DRAWING: None