Patent ID: 9663714
Date: 2017-05-30
CPC Classifications: C09K,H01L

Claim:
1. A method for manufacturing a phosphor including (Sr 1−x , Ba x ) 3 SiO 5 as a base material and europium (Eu) as an activator, comprising: preparing a mixture of compounds respectively including Sr, Ba, Si, and Eu such that a molar ratio of Sr, Ba, and Si is Sr:Ba:Si=3(1−x):3x:1 where 0.5≧x≧0.25, and a ratio of the number of moles of Eu to a total number of moles of Sr, Ba, and Eu is 0.06 or more and 0.08 or less; and firing the mixture at 1600° C. or more and 1700° C. or less in an inert gas atmosphere containing 4% or less of hydrogen on a volume basis, wherein a peak emission wavelength of the phosphor is 600 nm or more based on a composition ratio of Sr, Ba, and Eu.