| 초록 |
Porous TiO2 hollow nanofibers with crystalline structure of anatase and high surface area were prepared by electro-spinning and calcinations. TiO2 nanofibers for DSSC of high-solar conversion efficiency were prepared by addition of pore agent. In this study, porous TiO2 hollow nanofibers for DSSC were prepared by electro spinning and calcination process using the precursors of titanium tetraisopropoxide (TTIP), polystyrene, and pore-forming agent. TiO2 nanofibers prepared with pore-forming agent had high porosity. TiO2 nanofibers were prepared by calcination process. The surface morphology of nanofibers was examined by scanning electron microscopy (SEM) and x-ray diffraction (XRD). The range of diameters of these nanofibers was 80~150nm. Porosity of nanofibers was characterized using brunauer emmett teller (BET). Structure of the sintered composite was characterized using (TGA-DSC). |
