کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5370270 | 1388479 | 2006 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Field emission from patterned SnO2 nanostructures Field emission from patterned SnO2 nanostructures](/preview/png/5370270.png)
A simple and reliable method has been developed for synthesizing finely patterned tin dioxide (SnO2) nanostructure arrays on silicon substrates. A patterned Au catalyst film was prepared on the silicon wafer by radio frequency (RF) magnetron sputtering and photolithographic patterning processes. The patterned SnO2 nanostructures arrays, a unit area is of â¼500 μm Ã 200 μm, were synthesized via vapor phase transport method. The surface morphology and composition of the as-synthesized SnO2 nanostructures were characterized by means of scanning electron microscopy (SEM) and X-ray diffraction (XRD). The mechanism of formation of SnO2 nanostructures was also discussed. The measurement of field emission (FE) revealed that the as-synthesized SnO2 nanorods, nanowires and nanoparticles arrays have a lower turn-on field of 2.6, 3.2 and 3.9 V/μm, respectively, at the current density of 0.1 μA/cm2. This approach must have a wide variety of applications such as fabrications of micro-optical components and micropatterned oxide thin films used in FE-based flat panel displays, sensor arrays and so on.
Journal: Applied Surface Science - Volume 253, Issue 2, 15 November 2006, Pages 792-796