Red luminescent and structural properties of Mg-doped ZnO phosphors prepared by sol-gel method

被引：39
|
作者：
Shi, Qiang [1 ]
Zhang, Junying [2 ]
Zhang, Dong [1 ]
Wang, Changzheng [1 ,3 ]
Yang, Bing [1 ]
Zhang, Bingyuan [1 ]
Wang, Wenjun [1 ]
机构：
[1] Liaocheng Univ, Sch Phys Sci & Informat Engn, Liaocheng 252059, Shandong, Peoples R China
[2] Beihang Univ, Dept Phys, Beijing 100191, Peoples R China
[3] Liaocheng Univ, Inst Nonferrous Met Res, Liaocheng 252059, Shandong, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2012年 / 177卷 / 09期
关键词：
Mg-doped ZnO; Red luminescence; Sol-gel; OPTICAL-PROPERTIES; THIN-FILMS; OXIDE; TEMPERATURE; GROWTH; CATHODOLUMINESCENCE; PHOTOLUMINESCENCE; NANOPARTICLES; FABRICATION; MECHANISM;
D O I：
10.1016/j.mseb.2012.03.045
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnesium-doped zinc oxide phosphors with the formula of MgxZn1-xO were synthesized by sol-gel method, and the crystal structure and luminescent properties were investigated by means of XRD, SEM, FTIR, Raman spectrum, EPR. DRS and PL. The results indicated that the materials consisting of MgxZn1-xO particles exhibit good crystallinity and the particle size varies with the calcining temperature. An obvious blue shift of excitation band was observed in samples as the doping concentration was increased from 5 at% to 10 at%. The optimal concentration for obtaining the highest photoluminescent intensity for MgxZn1-xO phosphors was 10 at% (calcined at 875 degrees C for 3 h). Raman and EPR results suggested that the red emission of Mg-doped ZnO phosphors was attributed to zinc vacancies and oxygen vacancies. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：689 / 693
页数：5
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