Oxide phosphor, light emitting device, and manufacturing method of oxide phosphor

摘要

Problem to be solved: to provide an oxide phosphor having an emission peak in the wavelength range of red light to near infrared light.Li,NaKAt least one of the first elements M1 selected from Rb and CSMgCaSRAt least one second element M2 selected from Ba and ZnBAluminumGAAt least one third element m3 selected from in and rare earth elementsSiTiGeZrSNAt least one fourth element M4 selected from HF and Pb, andO andCr andIncludingThe molar ratio of the fourth element M4 in the composition 1 mole is 5.The molar ratio of the first element M1 is 0.7 or moreThe molar ratio of the second element M2 is 1.5 or more 2.5 or lessThe molar ratio of the third element m3 is 0.7 or moreThe molar ratio of oxygen is 12.9 or aboveThe molar ratio of Cr is 0.2 or less.It has a light emitting peak wavelength within the range of 700 nm to 1050 nm in the emission spectrumAn oxide phosphor.Diagram