Incorporation of Si-Ninducing white light of SrAl2Si2O8:Eu2+,Mn2+ phosphor for white light emitting diodes
来源期刊：JOURNAL OF RARE EARTHS2011年第6期
论文作者：郑玺 费沁妮 毛智勇 刘艳花 蔡毅 陆启飞 田华 王达健
文章页码：522 - 526
摘 要：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.
郑玺1，费沁妮1，毛智勇2，刘艳花3，蔡毅1，陆启飞1,2，田华1,2，王达健1,2,3
1. School of Materials Science and Engineering, Tianjin University of Technology2. Key Laboratory of Display Materials and Photoelectric Devices of Ministry of Education, Tianjin University of Technology3. Tianjin Key Laboratory for Photoelectronic Materials and Devices
摘 要：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.
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