Enhancement in Power Conversion Efficiency of Dye Sensitized Solar Cell by Using Nanocomposite Photoanode Material TiO2 - Zno

Abstract: This study represents the important role of dye sensitizer selection for best photovoltaic response and the photo anode thickness of semiconducting layer for determining the efficiency of dye-sensitized solar cells (DSSCs). For obtaining these objectives we employ an ex-situ methodology to prepare the composite materials. So we prepare nanocomposite by adding 20 wt.% of ZnO nanoparticles into TiO2 nanoparticles (20TZ). We fabricate dye sensitized solar cell by using the doctor blade technique. Furthermore our key findings are to extends the duration of dye loading, highlighting its significant influence on DSSC performance. The research also encompasses variations in the thickness of the semiconducting layer, providing critical insights into DSSC efficiency. Significance of present research work represent , photoanode thickness of 300-micron 20TZ-based DSSC, sensitized with 3% of N749 dye for a 2-hour loading period, achieves an impressive power conversion efficiency of 15.1%. The stability of 20TZ-based DSSCs was evaluated under continuous light illumination, revealing a minimal decrease in power conversion efficiency of 1.61% over 240 hours. Significance of present study is that we achieve power conversion efficiency 15.1% for the assemble dye sensitized solar cell and its stability duration time.