Preparation and characterization of SiO2 nanowires using a SnO2 catalyst

Publication date: Available online 27 November 2019Source: Physics Letters AAuthor(s): Hang Lv, Yan Tao, Xibao Yang, Jinglong Zhao, Shucheng Liu, Shuanglong Chen, Qiushi Wang, Ge Zhu, Xiaodong Lu, Bo Liu, Zhen YaoAbstractSiO2 nanowires have been successfully synthesized on the surface of the silicon substrate via a thermal evaporation method using SnO2 powders as the catalysts. The final synthesized product was systematically studied by X-ray powder diffraction (XRD), Raman spectroscopy (RS), scanning electron microscopy (SEM), and electron energy dispersive X-ray (EDX), UV-Visible absorption and photoluminescence (PL) spectroscopy. The results reveal that in the reaction and growth process, the real catalytic effect is Sn and SnOx, and the growth of SiO2 nanowire is most likely controlled by VLS mechanism. The PL spectral results indicate the obtained products have a stable yellow-green emission range. The products have improved performance and can be used in optoelectronic semiconductor devices.
Source: Physics Letters A - Category: Physics Source Type: research