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Semiconductor SnO2 nanotube arrays were fabricated by sol-gel method based on highly ordered nanoporous anodic alumina membrane. Their microstruc- tures were characterized by scanning electron microscopy, transmission electron microscopy, selective electron diffrac- tion spectroscopy and X-ray diffraction. Results indicated that SnO2 nanotubes have a thickness of about 20―30 nm, and a diameter of about 100―200 nm. The length of the nanotubes is about 1 μm, XRD and SEDS indicated that these SnO2 nanotubes are polycrystalline.
Semiconductor SnO2 nanotube arrays were fabricated by sol-gel method based on highly ordered nanoporous anodic alumina membrane. Their microstruc tures were characterized by scanning electron microscopy, transmission electron microscopy, selective electron diffrac tion spectroscopy and X-ray diffraction. SnO2 nanotubes have a thickness of about 20-30 nm, and a diameter of about 100-200 nm. The length of the nanotubes is about 1 μm, XRD and SEDS indicated that these SnO2 nanotubes are polycrystalline.