摘要
采用水热法成功合成了Cd1-xMnxS(x=0～0.05)纳米棒。采用扫描电镜、X射线衍射和Raman光谱表征Cd1-xMnxS的形貌和微结构,通过紫外光谱和荧光光谱表征其光学特性。结果表明:随着Mn2+含量的增加,Cd1-xMnxS纳米棒直径基本保持不变,但长度变短,形貌变得较杂乱,并且伴随产生颗粒。Mn2+掺杂CdS纳米棒保持了六方CdS结构,Mn2+在CdS纳米棒晶体中代替部分Cd2+的位置构成置换式固溶体。Cd1-xMnxS纳米棒的紫外吸收光谱和荧光光谱都随Mn2+含量的增加而逐渐红移。
The Cd1-xMnxS （x=0-0.05） nanorods were successfully synthesized through the hydrothermal route. The morphology and microstructure of Cd1-xMnxS nanorods were characterized by scanning electron microscope （SEM）, X-ray diffraction （XRD） and Raman spectrometry. The optical properties of Cd1-xMnxS nanorods were investigated with ultraviolet-visible spectrophotometer （UV-Vis） absorption spectroscopy and photoluminescence （PL） emission spectroscopy. The results show that with the increase of Mn2＋ in the samples, the morphology of products become disordered, accompanied with some nanoparticles. The diameter of nanorods remains almost the same, but the length becomes shorter. Mn2＋ enters the position of Cd2＋ by substitution, which leads to a decrease of the lattice constants of hexagonal CdS. Both the absorption band edge and the PL emission spectroscopy of Cd1-xMnxS nanorods shifted gradually to a longer wavelength with the increase of Mn2＋, which suggests that the substitution between MR2＋ and Cd2＋ leads to lattice distortion and the energy increase of CdS crystal.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2008年第12期1744-1748,共5页
Journal of The Chinese Ceramic Society
关键词
硫化镉纳米棒
锰离子掺杂
光学特性
水热合成
cadmium sulfide nanorods
manganese ion doping
optical properties
hydrothermal synthesis
