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Mn和Co掺杂的ZnO微晶的有机热解法制备及性能研究

发表时间:2010-10-31  浏览量:1734  下载量:742
全部作者: 吴山,王浩,汪汉斌,王喜娜
作者单位: 湖北大学物理学与电子技术学院
摘 要: 采用高温有机化学方法制备出Co2+和Mn2+掺杂的ZnO微米晶体。制备得到的样品呈六角锥形,尺寸在100~400 nm之间。X射线衍射(X-ray diffraction, XRD)扫描电子显微镜(scanning electron microscope,SEM)测量表明:Mn2+和Co2+均掺杂进入了ZnO晶格中,且掺杂的浓度达到了5%左右。光致发光测量发现掺杂后ZnO的本征发光被抑制,说明掺杂离子作为复合中心提高了ZnO体系中电子的非辐射跃迁几率。磁性测量表明:Mn∶ZnO微晶是顺磁性的,而Co∶ZnO表现出弱的室温铁磁性。
关 键 词: 无机非金属材料;稀磁半导体;有机热解法;ZnO
Title: Synthesis and characterization of Mn and Co doped ZnO submicrometer crystals by organic thermal decomposition method
Author: WU Shan, WANG Hao, WANG Hanbin, WANG Xina
Organization: Faculty of Physics and Electronic Technology, Hubei University
Abstract: This paper reports on optical and magnetic characteristics of the Co and Mn doped ZnO submicrometer crystals synthesized by organic thermal decomposition method. The doped ZnO submicrometer crystals are hexagon cone in shape with size ranging from 100 to 400 nm. X-ray diffraction (XRD), scanning electron microscope (SEM) measurements indicated that the Mn2+ and Co2+ are doped into the ZnO lattice with concentration of around 5%. Photoluminescence of the samples showed suppressed band-gap emission, indicating that the Mn or Co ions in the ZnO lattice increase the non-irradiative recombination processes. Magnetic property measurements revealed that the Mn∶ZnO submicrometer crystals were paramagnetic while the Co∶ZnO exhibited week ferromagnetism at 300 K.
Key words: inorganic nonmetallic materials; dilute semiconductor; organic thermal decomposition method; ZnO
发表期数: 2010年10月第20期
引用格式: 吴山,王浩,汪汉斌,等. Mn和Co掺杂的ZnO微晶的有机热解法制备及性能研究[J]. 中国科技论文在线精品论文,2010,3(20):2080-2084.
 
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