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Article – Journal of Nanoscience and Technology

Journal of Nanoscience and Technology, Volume 2,Issue 3,2016 Pages 144-147

Enhanced Photovoltaic Efficiency of Dye Sensitized Solar Cell by Few Layered Graphene Sheet Decked with SnO2 Nanopartilces as a Photoanode
Satish Bykkam, K. Venkateswara Rao*, Ch. Shilpa Chakra

In the current research work, the dye sensitized solar cell (DSSC) were fabricated by Few Layeard Graphene (FLG) / SnO2 nanocomposite used as a photoanode. FLG Weight (wt%) was varied from 1.0 % to 3.0 wt% with an interval of 1.0 wt% and investigated the effect of FLG wt% on their power conversion efficiency (η). The X-ray Diffraction (XRD) pattern confirmed the presence of FLG and SnO2 nanoparticles (NPs) in FLG/ SnO2 nanocomposites. High Resolution Transmission Electron Microscopy (HRTEM) shows that the nano sized SnO2 particles are highly decked on FLG sheet. Based on the results obtained from UV-Visible Diffuse Reflectance Spectra (UV-DRS), the band gap of Pure SnO2 NPs and FLG (1.0,2.0 and 3.0)/SnO2 nanocomposites are found to be ~4.239, 4.237, 4.210 and 4.172 eV respectively. Compared to Pure SnO2 NPs, the FLG (1.0 wt%) / SnO2 nanocomposite photoanode (η) was enhanced to 3.02 % with N719 dye under AM 1.5G, 100 mW/m2 of solar simulator. of the inter-PF sliding is found to increase with decreasing deformation wavelength-to-diameter ratio.

Keywords: Few Layered Graphene (FLG); Photoanode; FLG/SnO2 Nanocomposite; Dye Sensitized Solar Cell