Abstract
Electronic-insulating coating of CaCO3 on nanocrystalline TiO2 electrode for dye-sensitized solar cells was found to increase both short-circuit photocurrent (Jsc) and open-circuit photovoltage (Voc) remarkably. The significant increase in Jsc is mainly attributed to the remarkably increased dye adsorption resulting from the more basic surface of CaCO3 than TiO2, while the increase in Voc originates from suppression of charge recombination owing to the surface covering of TiO2 with an insulating coating of CaCO3, revealed by intensity-modulated photovoltage spectroscopy. A 15 μm TiO2 (23 nm) nanocrystalline electrode coated with 1 wt % CaCO3, sensitized with N719, produced power conversion efficiency of 10.2%, where N719 is cis-di(thiocyanato)-bis(2,2'-bipyridyl-4,4'-dicarboxylate) ruthenium(II), using an antireflective film on the cell surface.
Keywords
PhotocurrentNanocrystalline materialMaterials scienceAnti-reflective coatingEnergy conversion efficiencyDye-sensitized solar cellElectrodeRutheniumSolar cellCoatingDielectric spectroscopyOpen-circuit voltagePhotoelectrochemical cellSurface photovoltagePhotochemistryOptoelectronicsChemical engineeringSpectroscopyElectrolyteNanotechnologyElectrochemistryChemistryOrganic chemistryCatalysisVoltage
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Publication Info
- Year
- 2006
- Type
- article
- Volume
- 18
- Issue
- 12
- Pages
- 2912-2916
- Citations
- 227
- Access
- Closed
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Cite This
Zhong‐Sheng Wang,
Masatoshi Yanagida,
Kazuhiro Sayama
et al.
(2006).
Electronic-Insulating Coating of CaCO<sub>3</sub> on TiO<sub>2</sub> Electrode in Dye-Sensitized Solar Cells: Improvement of Electron Lifetime and Efficiency.
Chemistry of Materials
, 18
(12)
, 2912-2916.
https://doi.org/10.1021/cm0603102
Identifiers
- DOI
- 10.1021/cm0603102