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Improved performance of Black-dye-sensitized solar cells with nanocrystalline anatase TiO2 photoelectrodes prepared from TiCl4 and ammonium carbonate

Paper ID Volume ID Publish Year Pages File Format Full-Text
29311 44147 2007 5 PDF Available
Title
Improved performance of Black-dye-sensitized solar cells with nanocrystalline anatase TiO2 photoelectrodes prepared from TiCl4 and ammonium carbonate
Abstract

To improve the performance of tris(isothiocyanato)-ruthenium(II)-2,2′:6′,2′′-terpyridine-4,4′,4″-tricarboxylic acid, tris-tetrabutylammonium salt (Black-dye) sensitized TiO2 solar cells, nanocrystalline TiO2 particles, which were used as film photoelectrodes, were synthesized from TiCl4 and ammonium carbonate. The resulting nanocrystalline TiO2 particles, which had a pure anatase crystal structure, had smaller surfaces areas, larger size distribution and mean size compared to nanoparticles prepared by the traditional method using titanium(IV) tetraisopropoxide (Ti(OCH(CH3)2)4) and HNO3. The dye-adsorbed TiO2 photoelectrode synthesized from TiCl4 and ammonium carbonate had a more thorough surface coverage of the Black-dye. The short circuit photocurrent density (Jsc) and the incident monochromatic photon-to-electron conversion efficiency (IPCE) value of the cell using TiO2 prepared from TiCl4 were higher than that prepared from Ti(OCH(CH3)2)4. Consequently, the solar energy conversion efficiency (η) is 16% larger under AM 1.5 (1sun, 100 mW/cm2). The characterizations of the TiO2 photoelectrode suggested that pure anatase crystallites, the less surface area and the more thorough surface coverage of the sensitizing dye enhance the absorbed photon to current efficiency (APCE) and the light harvesting efficiency (LHE), respectively, which improves the IPCE, Jsc, and the η values.

Keywords
Dye-sensitized solar cell; TiO2; TiCl4; Ammonium carbonate
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Improved performance of Black-dye-sensitized solar cells with nanocrystalline anatase TiO2 photoelectrodes prepared from TiCl4 and ammonium carbonate
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 189, Issue 1, 10 June 2007, Pages 100–104
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us