Tailoring the Nanostructure of TiO2. Photoanodes for Efficient Co(II)/Co(III)-Mediated Dye-Sensitized Solar Cells
| Autor: | Rosabianca Iacobellis, Pantaleo Davide Cozzoli, Giovanni Mannino, Gian Paolo Suranna, Antonio Qualtieri, Riccardo Scarfiello, Roberto Grisorio, Roberto Giannuzzi, Luisa De Marco |
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| Přispěvatelé: | Iacobellis, Rosabianca, Giannuzzi, Roberto, Grisorio, Roberto, Qualtieri, Antonio, Scarfiello, Riccardo, Mannino, Giovanni, Cozzoli, Pantaleo Davide, Suranna, Gian Paolo, DE MARCO, Luisa |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Nanostructure
Materials science dye sensitized solar cells electrolyte diffusion nanocrystals nanostructured materials photovoltaics Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences nanocrystal Photovoltaics Porosity General Environmental Science dye sensitized solar cell Renewable Energy Sustainability and the Environment business.industry nanostructured material Photovoltaic system 021001 nanoscience & nanotechnology 0104 chemical sciences Dye-sensitized solar cell Nanocrystal Electrode Nanorod 0210 nano-technology business |
| Popis: | Novel nanostructured films employing hyperbranched and all-linear TiO2 nanorods have been developed with the aim to overcome the impediments to the diffusion of bulky redox shuttles in photo-electrochemical devices. The porosity of the working electrodes has been tailored by appropriately selecting the nanocrystal building blocks to study how the electrode features affect the electrochemical parameters underlying the charge-transport phenomena and the photovoltaic properties of dye-sensitized solar cells. An optimized combination of porosity, light-harvesting capability, and enhanced electron-transport properties leads to a remarkable improvement of the device efficiency from 1.3% to 8.6%. These results suggest that it is indeed possible to properly design photoanodes based on shape-engineered nanocrystals, which can be suitable for different electrochemical devices such as fuel cells or storage devices employing viscous or quasi-solid electrolytes. |
| Databáze: | OpenAIRE |
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