Cheng Yuan, Sun Kangning
College of Chemistry, Chemical Engineering and Materials Science, Collaborative, Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Ministry of Education, Shandong Normal University, Jinan, 250014, People's Republic of China.
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan, 250061, People's Republic of China.
J Fluoresc. 2020 Sep;30(5):1251-1259. doi: 10.1007/s10895-020-02593-0. Epub 2020 Aug 6.
ZnGa(GeSn)O:Yb,Er,Cr phosphors with different doping ratio of Ge/Sn were prepared by high temperature solid-state method. After excited at 270 nm with a xenon lamp for 15 min, the persistent luminescence (PL) of ZnGa(GeSn)O:Yb,Er,Cr phosphor can last more than 60 min. Under the excitation at 980 nm, ZnGa(GeSn)O:Yb,Er,Cr phosphors can generate effective up-conversion emissions from Er ions at 410 nm, 525 nm, 550 nm, 660 nm and Cr ions around 700 nm. Besides, after ceasing irradiation, ZnGa(GeSn)O:Yb,Er,Cr phosphors show up-conversion persistent luminescence (UCPL) from Cr ions around 700 nm. Moreover, ZnGa(GeSn) O:Yb,Er,Cr phosphor is optimal with the best persistent luminescent and up-conversion persistent luminescent properties. In short, owing to the long afterglow time, strong up-conversion emissions and novel up-conversion persistent luminescence, the as-prepared ZnGa(GeSn)O:Yb,Er,Cr phosphors can be potentially applied in a wide range of fields, such as security materials, coating materials, infrared detection, fluorescent label, tracer and testing.
采用高温固相法制备了具有不同Ge/Sn掺杂比例的ZnGa(GeSn)O:Yb,Er,Cr荧光粉。用氙灯在270nm激发15分钟后，ZnGa(GeSn)O:Yb,Er,Cr荧光粉的余辉发光（PL）可持续60分钟以上。在980nm激发下，ZnGa(GeSn)O:Yb,Er,Cr荧光粉能在410nm、525nm、550nm、660nm处从Er离子产生有效的上转换发射，并在700nm左右从Cr离子产生发射。此外，停止辐照后，ZnGa(GeSn)O:Yb,Er,Cr荧光粉在700nm左右显示出Cr离子的上转换余辉发光（UCPL）。而且，ZnGa(GeSn)O:Yb,Er,Cr荧光粉具有最佳的余辉发光和上转换余辉发光性能。总之，由于余辉时间长、上转换发射强和新颖的上转换余辉发光，所制备的ZnGa(GeSn)O:Yb,Er,Cr荧光粉可潜在地应用于广泛的领域，如安全材料、涂层材料、红外检测、荧光标记、示踪剂和测试等。
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