Dye-sensitization on the Photocurrent at Zinc Oxide Electrode in Aqueous Electrolyte Solution
TLDR
In this article, the dye-sensitized photocurrents generated from the electrochemical systems have been studied and the action spectra for the photocurrent, its dependence on the concentration of the dye solution and other experimental results have revealed that photocurrent is caused by the dye adsorbed on the electrode, not from that dissolved in the liquid phase.Abstract:
The dye-sensitized photocurrents generated from the electrochemical systems have been studied The action spectra for the photocurrent, its dependence on the concentration of the dye solution and other experimental results have revealed that the photocurrent is caused by the dye adsorbed on the electrode, not from that dissolved in the liquid phase From the analysis of the decay of the photocurrent with the time of illumination, the quantum yield for the electron injection from the excited dye has been determined Rose Bengal showed the quantum yield of 22% The influence of halide ions on the photocurrent has also been studiedread more
Citations
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Dye sensitised zinc oxide: aqueous electrolyte: platinum photocell
TL;DR: In this article, the authors reported the successful construction of cells with a high power efficiency, achieving a quantum efficiency of 10−2 in the presence of dye sensitized photo-currents.
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Electrochemical Behavior of Semiconductors under Illumination
TL;DR: In contrast to metals, the average free energy of electrons can be changed in semiconductors to a great extent by illumination Especially the concentration of minority electronic carriers can differ by orders of magnitude from the equilibrium value.
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Photochemical and electrochemical processes of excited dyes at semiconductor and metal electrodes
TL;DR: In this article, anodic and cathodic photocurrents were observed, depending on the semiconducting material, and the mechanism of supersensitization was discussed in detail.