硅酸盐学报2013，Vol.41Issue(6)：776-781,6.DOI:10.7521/j.issn.0454-5648.2013.06.10
煅烧温度对白色长余辉发光材料Y2O2S∶Tb3+,Sr2+,Zr4+形貌及发光性能的影响
Effect of Calcination Temperature on Morphology and Properties of White Long-lasting Phosphor Y2O2S∶Tb3+, Sr2+, Zr4+
摘要
Abstract
The white-light long-lasting phosphor of Y2O2S∶Th3+,Sr2+,Zr4+ Was prepared by a solid state reaction method.The effect of calcination temperature on the phase,surface morphology and luminescent properties of the samples was investigated.The samples were characterized by X-ray diffractometer,scanning electron microscope,fluorescence spectrophotometer,illuminometer and thermally stimulated spectrometer,respectively.The results show that the samples are composed of Y2O2S and Y2O3 phases,in which Y2O3 is a major phase at the calcination temperature 0f950 ℃.The pure Y2O2S phase was obtained at 1000 and 1050 ℃.Y2O3 phase appeared at ＞ 1050 ℃.The position and shape of Th3+ emission peaks under the 288 nm excitation appeared similar for all the sampies.The blue light emission at 417 nm and the yellowish-green light emission at 544 nm originated fiom the 5D3→7F5 and the 5D4→7F5 transitions of Tb3+,respectively.The trap depth was 0.64 eV and the decay time was 160 s (＞1 mcd/m2) for the sample synthesized at 1 000 ℃.关键词
白色长余辉/硫氧化钇/固相法/稀土Key words
white-light long-lasting phosphor/ yttrium oxysulfide/ solid state reaction method/ rare earths分类
数理科学引用本文复制引用
黄平,杨帆,崔彩娥,王磊,雷星..煅烧温度对白色长余辉发光材料Y2O2S∶Tb3+,Sr2+,Zr4+形貌及发光性能的影响[J].硅酸盐学报,2013,41(6):776-781,6.基金项目
国家自然科学基金(51072128) （51072128）
山西省攻关项目(2011032-1040-01) （2011032-1040-01）
山西省优秀青年学术带头人项目(20110001)资助. （20110001）
