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以Zn_2SiO_4为基质,用高温固相法(ss),sol-gel法(sg)制备得到Zn_2SiO_4：Dy~(3+)长余辉发光材料,该发光材料的制备及长余辉发光性能至今尚未见到文献报道．由该发光材料的激发谱发现,其在紫外的235～350nm范围有吸收,其发射光谱表明,在紫光(378nm,393nm)、橙光(595nm)、红光(691nm)部位有发射峰．通过对比掺杂与未掺杂样品发射光谱,说明样品发光是由基质Zn_2SiO_4产生的,Dy~(3+)的掺杂只是使材料形成了陷阱能级进而发出长余辉,还阐述了Zn_2SiO_4：Dy~(3+)的可能发光机理．
The Zn2SiO4: Dy ~ (3 +) long afterglow luminescent material prepared by high temperature solid-state method (ss) and sol-gel method (sg) with Zn2SiO4 as the substrate has not yet been found and its preparation and long- Reported in the literature. The excitation spectrum of the luminescent material shows that it has absorption in the UV range of 235-350 nm. The emission spectrum of the luminescent material shows that there are emission peaks in violet (378 nm, 393 nm), orange (595 nm) and red (691 nm) regions. By comparing the emission spectra of undoped and undoped samples, it is shown that the luminescence of the sample is produced by Zn2SiO4 substrate. The doping of Dy3 + makes the material have a trap level and emits long afterglow. The Zn2SiO4: Dy ~ (3 +) possible light-emitting mechanism.