Role of iodide in photoelectrochemical solar cells. Electron transfer between iodide ions and ruthenium polypyridyl complex anchored on nanocrystalline SiO2 and SnO2 films
Article Abstract:
Research was conducted to examine the role of iodide in photoelectrochemical solar cells. Nanocrystalline SiO2 and SnO2 thin films cast on an optically transparent electrode were modified with ruthenium(II) polypyridyl complex. Emission spectroscopy and laser flash photolysis were used to elucidate the kinetic and mechanistic details of interaction between excited Ru(II) and iodide ions. Results show that the reaction between I- and Ru(III) controls the regeneration of sensitizer in photochemical solar cells.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Extending the photoresponse of TiO2 to the visible light region: Photoelectrochemical behavior of TiO2 thin films prepared by the radio frequency magnetron sputtering deposition method
Article Abstract:
The visible-light-responsive TiO2 thin films are developed by a radio frequency magnetron sputtering (RF-MS) deposition method in which the substrate temperatures and the gaseous medium during deposition are controlled. The mechanistic insights help in designing semiconductor nanostructures that will maximize the charge separation efficiency and extend the response of the large band gap semiconductor TiO2 into visible light regions.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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C60 cluster as an electron shuttle in a Ru(II)-polypyridyl sensitizer-based photochemical solar cell
Article Abstract:
A redox-active molecular assembly is employed as an electron relay that greatly minimizes the interaction with the excited dye while maintaining the effectiveness of the regeneration cycle. The C60 clusters are used to separate the Ru(bpy)2(dcbpy)(super 2+) (Ru(II) complex) and I3(super -)/I(super -) couple to minimize the sensitizer-redox couple interactions in the photochemical solar cell.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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