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Fabrication of TiO2/CdS heterostructure photoanodes and optimization of light scattering to improve the photovoltaic performance of dye-sensitized solar cells (DSSCs)

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Abstract

Currently, the TiO2/CdS photoanodes based dye-sensitized solar cells (DSSCs) have shown extraordinary developments in the photo-conversion efficiency. In this report, pristine TiO2, CdS and various molar ratios of TiO2/CdS photoanodes were prepared by one step microwave irradiation route and followed by doctor blade method. The sheet-like morphology of the TiO2 and CdS nanoparticles were clearly evident from the SEM and TEM images. A significant reduction bandgap with enhanced light absorption and rapid prevention of electron hole pair was explored by UV-DRS and PL studies. The photocurrent density–voltage (J–V) and electrochemical impedance (EIS) characteristics were analyzed for assembled solar cell. The photo-conversion efficiency of 12.8% was obtained with the configuration TiO2/CdS (200 mg) that represent a 2.5-fold increment compared to bare TiO2 (5.33%) as well as commercial Pt (6.11%). The experimental results are discussed.

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Authors and Affiliations

  1. Department of Physics, Muthayammal College of Arts and Science, Rasipuram, 637408, Tamilnadu, India

    M. Revathi

  2. PG and Research Department of Physics, Thiruvalluvar Government Arts College, Rasipuram, 637401, Tamilnadu, India

    M. Revathi & A. Pricilla jeyakumari

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  1. M. Revathi
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Revathi, M., jeyakumari, A.P. Fabrication of TiO2/CdS heterostructure photoanodes and optimization of light scattering to improve the photovoltaic performance of dye-sensitized solar cells (DSSCs). J Mater Sci: Mater Electron 32, 11921–11930 (2021). https://doi.org/10.1007/s10854-021-05822-9

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