| 摘要 |
A method of forming a crystalline tin (IV) oxide film on a substrate, where said film comprises a plurality of nanorods, each of which includes crystals grown along the c-axis of the tin (IV) oxide crystal. The method comprising: at least partly immersing a substrate (figure 1, 3) in an aqueous solution (figure 1, 1) of a tin salt in an acid medium with a second compound; the second compound providing a slow release source of a basic medium; said slow release source decomposing and reacting with said tin salt to thereby effect growth of tin oxide crystals along said crystal c-axis to form said crystalline tin (IV) oxide nanorods on said substrate (figure 1, 3). The film may be used as a gas sensor, photochemical system or in a photoelectrode after a doping/firing step. |
