Textile electrodes as substrates for the electrodeposition of porous ZnO.
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.
Loewenstein
Thomas
T
Justus-Liebig-Universität Giessen, Institut für Angewandte Physik, Heinrich-Buff-Ring 16, 35392, Giessen, Germany.
Hastall
Andreas
A
Mingebach
Markus
M
Zimmermann
Yvonne
Y
Neudeck
Andreas
A
Schlettwein
Derck
D
D004563:Electrochemistry; D004595:Electroplating / Q000295:instrumentation / Q000379:methods*; D004801:Eosine Yellowish-(YS) / Q000737:chemistry; D005456:Fluorescent Dyes / Q000737:chemistry; D008422:Materials Testing; D008839:Microelectrodes; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D016062:Porosity; D012996:Solutions / Q000737:chemistry; D013499:Surface Properties; D013784:Textiles; D015034:Zinc Oxide / Q000737:chemistry*
D005456:Fluorescent Dyes; D012996:Solutions; D015034:Zinc Oxide; D004801:Eosine Yellowish-(YS)