Dye sensitized solar cells based on hydrothermally grown TiO₂ nanostars over nanorods

다국어 초록 (Multilingual Abstract)

<P><B>Abstract</B></P> <P>A rutile titanium dioxide nanostar over nanorods is synthesized by a simple and cost-effective hydrothermal deposition method onto conducting glass substrates. In order to study the effect of precursor concentrations on the growth of TiO<SUB>2</SUB>, the amount of Ti precursor is varied from 0.1mL to 0.5mL at the interval of 0.1mL. These TiO<SUB>2</SUB> thin films are characterized for their morphological, structural, optical and <I>J</I>–<I>V</I> properties using various characterization techniques. SEM images showed the formation of densely packed nanostars over nanorods for 0.3mL titanium tetraisopropoxide (TTIP). XRD patterns show the formation of polycrystalline TiO<SUB>2</SUB> with tetragonal crystal structure possessing rutile phase. Further, the TiO<SUB>2</SUB> thin films are used for dye sensitized solar cells using N3-dye.</P> <P>The films were photoelectrochemically active and can be viewed as a promising application in DSSC with maximum current density of 1.459mA/cm<SUP>2</SUP> with enhanced photovoltage of 696mV for the sample prepared at 0.3mL TTIP.</P>