The TiO_2 nanoparticles are wildly used in dye sensitized solar cell( DSSC) serving as the photoanode. A new type of DSSC was designed with TiO_2 nanoparticles coated Ag nanowire heterojunction as the photoanode. Photoanodes with different TiO_2 crystalline degrees were prepared at different hydro-thermal reaction temperatures. The morphology and microstructure were studied by scanning electron microscope( SEM),transmission electron microscope( TEM),X-ray diffraction( XRD) and the effect of TiO_2 crystallin...