Synthesis and Characterization of Ti_(1-x)Sn_xO_2 Nanoparticles and Nanotubes and their Photovoltaic Properties as Dye-Sensitized Solar Cell Photoelectrodes

摘要

Ti_(1-x)Sn_xO2 nanoparticles with different Ti/Sn ratios (x = 0-0.1 and 1.0) were successfully synthesized by the copre-cipitation method, and its nanotubes were prepared from low-temperature chemical synthesis in NaOH solution. The influence of Sn dopant on the structures and the photovoltaic properties as dye-sensitized solar cells for these nanostructured TiO_2 were investigated. The photovoltaic performance of Ti_(1-x)Sn_xO_2 nanoparticle photoelectrodes degraded with the addition of Sn. However, regardless of the absence of Sn, a conversion efficiency of TiO_2 nanotubes made from Ti_(1-x)Sn_xO_2 (x - 0-0.05) nanparticles increased depending on the x value and reached to 5.98% for x = 0.05.