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Properties of Chromophores Determining Recombination at the TiO2–Dye–Electrolyte Interface
- Publication Year :
- 2013
- Publisher :
- American Chemical Society, 2013.
-
Abstract
- Different classes of chromophores have been developed for the dye solar cell (DSC), including as the two main classes organometallic dyes, with Ru-based complexes and Zn-porphyrin complexes, and metal-free dyes. They result in different recombination behavior by electron transfer at the titania/dye/electrolyte interface, where the dye molecule plays a pivotal role. We present an overview of the main factors that control recombination depending on dye structural and electronic properties: the substituent’s nature, the size and nature of the π bridge, the type of absorption onto the titania surface, and the structure of the donor electron moiety or anchoring group. Different recombination mechanisms arise, including direct recombination to redox electrolytes and through a dye cation intermediate. This work is supported by Generalitat Valenciana under project PROMETEO/2009/058 and by Ministerio de Economia y Competitividad of Spain (Consolider HOPE CSD2007-00007, MAT2010-19827).
- Subjects :
- Molecular design
Substituent
Electron-transfer
Acceptor dyes
Photovoltaic performance
Surfaces and Interfaces
Electrolyte
Chromophore
Condensed Matter Physics
Photochemistry
Redox
Sensitized solar-cells
Charge recombination
Energy conversion
chemistry.chemical_compound
Electron transfer
chemistry
High-efficiency
Electrochemistry
Moiety
General Materials Science
Absorption (chemistry)
Spectroscopy
Recombination
Organic-dye
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....8ad390df8295fb1d20dce8e949a7e4bd