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Photoluminescence (PL) and colorimetric properties of white-light emission SrAl2Si2O8:Eu2+,Mn2+ phosphor were tuned effectively through incorporating Si-N bond to the host in the form of Si3N4. A maximum solubility of Si-N bond in SrAl2-xSi2+xO8-xNx was estimated theoretically to be in a value of x=1.0. Under 365 nm irradiation, a distinct red-shift of blue band emission from 406 to 473 nm for Eu2+ and an enhancement of yellow band emission peaked at ~565 nm for Mn2+ were observed with the increase of Si-N content. These effects resulted from partial substitution of Si-N for Al1-O1 and Al4-O2 sites in SrAl2Si2O8 lattice. Eventually, a white emission with CIE chromaticity coordinates (0.287, 0.337) and color rendering index (CRI) 78.3 for SrAl2Si2O8:Eu2+,Mn2+ phosphor were achieved upon optimization to a suitable amount of Si-N.
A maximum solubility of Si-N bond in SrAl2-xSi2 + xO8 (Mn) and Mn2 + phosphor are tuned effectively through incorporating Si-N bond to the host in the form of Si3N4. Photoluminescence (PL) and colorimetric properties of white-light emission SrAl2Si2O8: Eu2 + - xNx was estimated theoretically to be in a value of x = 1.0. Under 365 nm irradiation, a distinct red-shift of blue band emission from 406 to 473 nm for Eu2 + and an enhancement of yellow band emission peaked at ~ 565 nm for Mn2 + were observed with the increase of Si-N content. These effects resulted from partial substitution of Si-N for Al1-O1 and Al4-O2 sites in SrAl2Si2O8 lattice. Eventually, a white emission with CIE chromaticity coordinates (0.287, 0.337) and color rendering index (CRI) 78.3 for SrAl2Si2O8: Eu2 +, Mn2 + phosphor were achieved upon optimization to a suitable amount of Si-N.