Abstract
The study of dye-sensitized solar cells (DSCs) based on nanocrystalline films of high band gap semiconductors is a progressive field of research that is being carried out by scientists in a wide range of laboratories. To improve the conversion efficiency of the DSCs, the SnO2 nanocrystalline is prepared via the hydrothermal methods, and characterized by XRD, TEM, BET and Absorption spectrum. Though analysis the results, the conclusion is shown the pure SnO2 is prepared under a certain condition, such as pH=11, reaction time for 8 days, heat treating temperature at 200°C and 0.05mol/L SnCl4 concentration, the SnO2 nanocrystalline both shows the single phase that SnO2 from the sule solution to kalin solution. The prepared SnO2 nanocrystalline shows the rod shape crystalline, the diameter of rod shape crystalline is about 10nm, the length of rod shape crystalline is about 100nm, the surface area of SnO2 nanocrystalline is 79.7591m2/g. The absorbance of SnO2 nanocrystalline shows the strong absorption in the ultraviolet ray range, the absorbance of synthesized SnO2 nanocrystalline shows the highest value.
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