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IEEE Journal of Photovoltaics Template
  • Dileep V Raj
Dileep V Raj
Department of Electrical and Electronics Engineering, Amrita School of Engineering, Coimbatore, Department of Electrical and Electronics Engineering
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Abstract

Cost-effective, parallel-grid embedded dye sensitized solar mini-modules were fabricated successfully by utilizing reduced graphene oxide (rGO) and rGO-silver (rGO-Ag) nanocomposites as grid current collectors. The pure rGO grid embedded dye sensitized solar mini-module showed a maximum power conversion efficiency of 4.09 % with improved fill factor, circumvented iodide/triiodide electrolyte corrosion and reduced the module power loss significantly. Electrochemical impedance spectroscopy studies revealed that the 1:1 wt% ratio rGO-Ag nanocomposite grid improved the module’s electron diffusion length, mobility and average lifetime, and produced a higher open circuit voltage (Voc) as compared to the pure silver grid in dye sensitized solar mini-modules.