• ISSN: 2349-6002
  • UGC Approved Journal No 47859
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Comparative Study of Photogalvanic Cells: A Detailed Analysis of Erythrosine-Tween -80 Based Photogalvanic Systems for Solar Energy Harvesting

  • Unique Paper ID: 167772
  • Volume: 11
  • Issue: 4
  • PageNo: 316-322
  • Abstract:
  • Photogalvanic cells employ a reversible photochemical redox process to store electricity reliably. It is crucial to differentiate between photovoltaic and photogalvanic cells. While photovoltaic cells generate electricity by directly exciting an electron with a photon, photogalvanic cells involve the excitation of a molecule by a photon, triggering a chemical reaction that produces high-energy products. These high-energy products can subsequently release their energy electrochemically, functioning similarly to a conventional battery. Photogalvanic cells harness light using the relatively narrow absorption bands of specific molecules. In this study, erythrosine was used as a photosensitizer, D-xylose as a reductant, and Tween-80 as a surfactant for solar energy harvesting. The system achieved a maximum photocurrent of 440.00 µA, a photopotential of 820.00 mV, and a power output of 287 µW. The conversion efficiency of the system was 2.92%, with an energy storage capacity of 75.0 minutes in the dark. The present study investigated various factors influencing the performance of photogalvanic cells, including the concentrations of reductant and surfactant, pH, diffusion length, electrode area, temperature, and light intensity. Higher concentrations of reductant generally increase photocurrent, although this may lead to reduced efficiency due to stability issues. Increasing surfactant concentration lowers surface tension and enhances emulsification, but it may also introduce toxicity and environmental concerns. The pH has a positive effect on electrical output within a specific range, while diffusion length impacts charge carrier mobility, current density, and the cell's sensitivity to light intensity
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Cite This Article

  • ISSN: 2349-6002
  • Volume: 11
  • Issue: 4
  • PageNo: 316-322

Comparative Study of Photogalvanic Cells: A Detailed Analysis of Erythrosine-Tween -80 Based Photogalvanic Systems for Solar Energy Harvesting

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UGC Approved
Journal no 47859

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