This paper reports the eect of surface topography of titanium dioxide lms on short-circuit current density of photoelectro-chemical solar cell of ITO/TiO2/PVC-LiCLO4/graphite. The lms were deposited onto ITO-covered glass substrate by screen-print-ing...
This paper reports the eect of surface topography of titanium dioxide lms on short-circuit current density of photoelectro-chemical solar cell of ITO/TiO2/PVC-LiCLO4/graphite. The lms were deposited onto ITO-covered glass substrate by screen-print-ing technique. The lms were tempered at 300.C, 350.C, 400.C, 450.C and 500 .C for 30min to burn out the organic parts and toachieve the lms with porous structure. The surface roughness of the lms were studied using scanning electron microscope (SEM).Currentvoltage relationship of the devices were characterized in dark at room temperature and under illumination of 100mWcm. 2light from tungsten halogen lamp at 50.C. The device utilising the TiO2 lm annealed at 400.C produces the highest short-circuitcurrent density and open-circuit voltage as it posses the smoothest surface topography with the electrolyte. The short-circuit currentdensity and open-circuit voltage of the devices increase with the decreasing grain size of the TiO2 lms. The short-circuit currentdensity and open-circuit voltage are 0.6l A/cm2 and 109mV respectively..