The Preparation and Property of Dye Sensitized Solar Cells using TiO2

Two types of TiO2 nanotube and nanopanicle, were used for the mesoporous coatings by doctor blade technique followed by calcining at 450 degrees C. The coatings were used as working materials for dye-sensitized solar cells (DSCs) later on and their photovoltaic characterization was carried out. The nanoparticle was synthesized from hydrogen titanate nanotube by hydrothermal treatment at 180 degrees C for 24 hr. The solar energy conversion efficiency (eta) of DSCs prepared by this nanoparticle reached 8.07% with V-OC (open-circuit potential) of 0.81 V, I-SC (short-circuit current) of 18.29 mV/cm(2), and FF (fill factor) of 66.95%, respectively. For the preparation of nanotube, the concentration of NaOH solution varied from 3 M to 5 M. In the case of DSCs fabricated with nanotubes from 3 M NaOH solution, then reached 6.19% with V-OC of 0.77 V-SC of 12.41 mV/cm(2), and FF of 64.49%, respectively. On the other hand, in the case of 5 M solution, the photovoltaic eta was decreased with 4.09% due to a loss of photocarriers. In conclusion, it is demonstrated that the solar energy conversion efficiency of DSCs made from TiO2 nanoparticle showed best results among those under investigation.