【摘 要】
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Photoluminescence (PL) and colorimetric properties of white-light emission SrA12Si2O8:Eu2+,Mn2+ phosphor were tuned effectively through incorporating Si-N bond
【机 构】
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School of Materials Science and Engineering,Key Laboratory of Display Materials and Photoelectric De
论文部分内容阅读
Photoluminescence (PL) and colorimetric properties of white-light emission SrA12Si2O8: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 SrA12-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 All-O1 and A14-O2 sites in SrA12Si2O8 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.
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