通过掺杂铬在ZnGeO四面体材料中诱导可调谐的主体发光。
Inducing tunable host luminescence in ZnGeO tetrahedral materials via doping Cr.
作者信息
Bai Qiongyu, Li Panlai, Wang Zhijun, Xu Shuchao, Li Ting, Yang Zhiping, Xu Zheng
机构信息
Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing 100044,China; Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044,China.
College of Physics Science & Technology, Hebei Key Lab of Optic-Electronic Information and Materials, Hebei University, Baoding 071002, China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2018 Jun 15;199:179-188. doi: 10.1016/j.saa.2018.03.065. Epub 2018 Mar 26.
ZnGeO consisting of tetrahedron, and it is a self-luminescent material due to the presence of the native defects and shows a bluish white emission excited by ultraviolet. Although Cr doped in a tetrahedron generally cannot show luminescence, in this research, new defects are formed as Cr doped in ZnGeO, hence a green emission band can be obtained. Meanwhile, the intensity of host emission is also decreased. Therefore, ZnGeO:Cr are synthesized using a high-temperature solid-phase method. Thermoluminescence (TL) and luminescence decay curves are used to investigate the variation of native defects. The emission colour can be tuned from bluish white to green when Cr doped in ZnGeO. This result has guidance for controlling the native emission of self-luminescent material.
ZnGeO由四面体组成，由于存在本征缺陷，它是一种自发光材料，在紫外线激发下呈现蓝白色发射。虽然四面体中掺杂的Cr通常不发光，但在本研究中，当Cr掺杂到ZnGeO中时会形成新的缺陷，从而获得一个绿色发射带。同时，主体发射的强度也会降低。因此，采用高温固相法合成了ZnGeO:Cr。利用热释光（TL）和发光衰减曲线来研究本征缺陷的变化。当Cr掺杂到ZnGeO中时，发射颜色可从蓝白色调至绿色。这一结果对控制自发光材料的本征发射具有指导意义。
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