Shanmugam N, Cholan S, Kannadasan N, Sathishkumar K, Viruthagiri G
Department of Physics, Annamalai University, Annamalai Nagar, Chidambaram 608 002, Tamilnadu, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2014 Jan 24;118:557-63. doi: 10.1016/j.saa.2013.09.012. Epub 2013 Sep 13.
We report the synthesis and characterization of undoped and various levels of Ce(3+) doped ZnS nanocrystal. The structure and size of the products were studied by X-ray diffraction (XRD). The existence of functional groups was identified by Fourier transform infrared spectrometry (FT-IR). The UV-Visible measurements reveal that the synthesized products are blue shifted when compared with bulk phase of ZnS as a result of quantum confinement effect. The PL studies show an enhancement in the intensity of emission band in the UV region on increased Ce(3+) doping. The morphology of the products was evaluated by Field emission scanning electron microscope (FESEM) and High resolution transmission electron microscopy (FESEM). The presence of Ce(3+) was confirmed by Energy dispersive spectral analysis (EDS). The thermal stability of pure and doped products was analyzed by thermo gravimetric and differential thermal analysis (TG-DTA).
我们报道了未掺杂以及不同浓度Ce(3+)掺杂的ZnS纳米晶体的合成与表征。通过X射线衍射（XRD）研究了产物的结构和尺寸。通过傅里叶变换红外光谱法（FT-IR）确定了官能团的存在。紫外-可见光谱测量表明，由于量子限制效应，合成产物与ZnS体相相比发生了蓝移。光致发光（PL）研究表明，随着Ce(3+)掺杂量的增加，紫外区域发射带的强度增强。通过场发射扫描电子显微镜（FESEM）和高分辨率透射电子显微镜（FESEM）对产物的形貌进行了评估。通过能量色散光谱分析（EDS）证实了Ce(3+)的存在。通过热重分析和差示热分析（TG-DTA）分析了纯产物和掺杂产物的热稳定性。
