| abstract |
A phosphor comprising 24wt% to 30wt% of Ca (calcium), 17wt% to 21wt% of Al (aluminum), 18wt% to 22wt% of Si (silicon), 1wt% to 15wt% of oxygen, 15wt% to 33wt% of nitrogen and 0.01wt% to 10wt% of Eu (europium), nwherein an emission maximum in an emission spectrum is in a range of 600 nm to 660 nm; and nwherein color chromaticity x of light emission is in a range of 0.5 to 0.7, and color chromaticity y of the light emission is in a range of 0.3 to 0.5. |