Study On Fabrication And Properties Of SnO₂ And ZnO Nanomaterial

Sn O2 and Zn O are important metal oxide semiconductor material, having great application prospect in optical, electrical and optoelectronic field. Researching on synthesis, structure and properties of Sn O2 and Zn O nanomaterial would further extend their application on these field.In this paper, one-dimensional Sn O2 and Zn O nanomaterial are fabricated by chemical vapor deposition method and modified with annealing and doping. The morphologies, composition, microstructures, crystalline phases, optical and electrical properties of Sn O2 and Zn O nanomaterial are characterized by X-ray diffraction, Scanning electron microscope, Transmission electron microscope, Energy Dispersive Spectrometer, X-ray photoelectron spectroscopy, Raman spectra, Photoluminescence spectra, Field emission and ElectrochemicalThe result shows that temperature, time, substrate have great influence on morphologies of Sn O2 nanomaterial. one-dimensional Sn O2 nanowires and nanorods are easier fabricated on Au buffered Si substrates and obtained larger diameter with higher temperature and longer growth time. Photoluminescence spectra of Sn O2 nanowires with annealing showed a strong emission peaked at 576 nm. However, the 576 nm emission was gradually decreased with the increase of oxygen concentration during the thermal annealing, indicating the oxygen-related emission. Furthermore, field emission properties of Sn O2 nanowires get enhanced after annealing. The lowest turn-on and threshold field were 4.6 and 6.2 V/μm, respectively. Sn O2 nanowires doped with Zn exhibites tetragonal rutile structure and the defection-related emission are enhanced with tiny red shift.The morphologies of Sn:Zn O nanowires transforms to nanobelt and nanoneedle With the increase of Sn doping concentration, Photoluminescence spectra of Sn:Zn O nanowires shows that the intrinsic emission peak occering blue shift and intensity of defection-related are enhanced. Zn O nanorods doped with Sb shows that the intrinsic emission peak shifts to red, Cyclic Voltammetry curve occurs oxidation peak with 0.73% Sb-doping, Sb:Zn O nanorods needs further research to appliance to electrode materials.