Two types of TiO2, nanotube and nanoparticle, were used for the mesoporous coatings by doctor bladetechnique followed by calcining at 450℃. 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 hydro-gen titanate nanotube by hydrothermal treatment at 180℃ for 24 hr. The solar energy conversion efficiency (η) of DSCsprepared by this nanoparticle reached 8.07％ with VOC (open-circuit potential) of 0.81V, Isc (short-circuit current) of18.29mV/cm2, and FF (fill factor) of 66.95％, respectively. For the preparation of nanotube, the concentration of NaOHsolution varied from 3 M to 5 M. In the case of DSCs fabricated with nanotubes from 3M NaOH solution, the η reached6.19％ with Voc of 0.77 V, Isc of 12.41mV/cm2, and FF of 64.49％, respectively. On the other hand, in the case of 5Msolution, the photovoltaic η was decreased with 4.09％ due to a loss of photocarriers. In conclusion, it is demonstratedthat the solar energy conversion efficiency of DSCs made from TiO2 nanoparticle showed best results among thoseunder investigation.