Synthesis of titanium dioxide nanostructures and their effects on current-voltage (I-V) performance in dye sensitized solar cells
نویسندگان
چکیده
Anatase phase TiO2 nanostructures (Nanoparticles and nanorods) were prepared by two different methods. The prepared samples were characterized with Powder X-ray diffraction (PXRD), Field emission scanning electron microscopy (FESEM), High resolution transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller (BET) method and Barrett-Joyner-Halenda (BJH) analysis. The PXRD pattern shows that both the nanostructures are anatase phase with good crystalline nature. The morphological results show that the TiO2 nanorods have diameter of about ~ 25 nm and the length of ~ 100 nm. The TiO2 nanoparticles are spherical in shape with mesoporous property. The solar energy conversion efficiency (η) of the cell using nanoparticles with mesoporous structure was about 3.415 % with Jsc of 13.206 mA/cm 2 , Voc of 0.607 V and FF of 43 % ; while efficiency of the cell using nanorods reached 1.21 % with Jsc of 4.35 mA/cm 2 , Voc of 0.661V and FF of 42%.
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