微纳米Cu_9S_5的溶剂热合成及其光学性能

Solvothermal synthesis and optic properties of Cu_9S_5 micro-nano materials

以Cu(Ac)2为铜源,二甲亚砜(DMSO)为硫源和溶剂,采用溶剂热法合成Cu9S5纳米材料。利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)对所得产物的晶型和形貌进行表征。通过改变原料量,反应时间等因素获得最佳的合成条件。借助紫外可见光度计、荧光光度计研究了该条件下产物的光学性质,由紫外吸收光谱可知产物具有1.1eV的带隙能;由荧光谱图可知,当发射波长为453nm时,产物在683nm处有发射峰。产品具有一定的发光性能。

Cu9 S5 nano-materials were synthesized by solvothermal method with using Cu（Ac） 2 and dimethylsulfox- ide （DMSO） as raw materials and solvent. The crystal and morphology of the resultant samples were characterized with X- ray diffraction（XRD） and scanning electron microscopy（SEM）, respectively. The optimum conditions were obtained by the study of the ratio of the raw materials, the concentration of Cu2＋ , reaction temperature and reaction time. According to UV vis spectra, the band gap of Cu9 S5 was 1. leV. When the emission wavelength was 453nm, the excitation peak was 683nm.