Cd_(1-x)Zn_xS纳米梳状结构的合成与光学特性研究

Synthesis and Optical Properties of Cd_(1-x)Zn_xS Comb-like Nanostructure

采用简单的化学气相沉积法制备了Cd1-xZnxS纳米梳状结构,并利用XRD、SEM、TEM、SAED等方法分析表征样品。实验结果表明,气-固生长机制和极性面的自催化过程在纳米梳的合成中起主要作用。通过改变沉积位置和气流量,可以实现对纳米梳形貌的控制。荧光光谱测试显示,合成的纳米梳状结构在480 nm处有一个强烈的发光中心,在515 nm处有一个弱的发光中心。

Cd1-xZnxS single crystalline with comb-like nanostructures were successfully synthesized by a simple chemical vapor deposition technology.As-synthesized Cd1-xZnxS nanostructures were characterized using X-ray diffraction（XRD）,scanning electronic microscopy（SEM）,transmission electronic microscopy（TEM）,and selected area electronic diffraction（SAED）.A series of electron microscopy characterization results suggest that the growth of Cd1-xZnxS comb-like nanostructure was controlled by the vapor-solid growth mechanism and the self-catalyzed process of the polar surface.The morphologies could be controlled by adjusting the deposition position and gas rate.Fluorescence spectrum reveals that the Cd1-xZnxS comb-like nanostructures have a strong luminescence centered at 480 nm and one weak luminescence center at 515 nm,respectively.