Textile electrodes as substrates for the electrodeposition of porous ZnO
| Autor: | Derck Schlettwein, Yvonne Zimmermann, Andreas Hastall, Thomas Loewenstein, Andreas Neudeck, Markus Mingebach |
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| Rok vydání: | 2008 |
| Předmět: |
Materials science
Scanning electron microscope Surface Properties General Physics and Astronomy Mineralogy Substrate (electronics) Materials Testing Electrochemistry Deposition (phase transition) Physical and Theoretical Chemistry Particle Size Porosity Fluorescent Dyes Aqueous solution Textiles Electroplating Nanostructures Solutions Microelectrode Chemical engineering Polyamide Electrode Microscopy Electron Scanning Eosine Yellowish-(YS) Zinc Oxide Microelectrodes |
| Zdroj: | Physical chemistry chemical physics : PCCP. 10(14) |
| ISSN: | 1463-9076 |
| Popis: | Metal-coated polyamide threads and filaments were chosen as substrate electrodes to deposit highly porous ZnO films for photovoltaic application. The films were electrodeposited at 70 degrees C from oxygen-saturated aqueous zinc salt solutions containing EosinY as a structure directing agent. The current density during deposition was increased compared with planar electrodes by enhanced diffusion at the filaments operating as cylindrical microelectrodes. Analysis by scanning electron microscopy showed an influence of geometrical constraints within the textiles and the hydrodynamic flow rate in the deposition solution on the film morphology. Photoelectrochemical characterization of sensitized films revealed the feasibility of the presented approach and indicated further steps needed for electrode optimization. |
| Databáze: | OpenAIRE |
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