Electrophoretic deposition of nanocomposites formed from polythiophene and metal oxides
作者： Quoc-Trung Vu , Martin Pavlik , Niels Hebestreit , Jiri Pfleger , Ursula Rammelt
DOI: 10.1016/J.ELECTACTA.2005.05.052
关键词:
摘要: Abstract An electrophoretic deposition (EPD) procedure was adopted for the cathodic preparation of thin films conducting polymer/metal oxide nanocomposites with a core-shell structure. The process investigated at different potentials and in various solvents. mechanism kinetics were studied via quartz crystal microbalance (QCM) zeta-potential measurements. properties composite layers by electrochemical methods (cyclic voltammetry, impedance spectroscopy) photocurrent reversible redox potential polythiophene about 0.75 V SCE . p-type semiconducting behaviour reduced In case using TiO 2 (n-type semiconductor) as core material, an n/p heterojunction observed. spectra maximum peak found around λ = 500 nm (2.5 eV), depending on applied potential. It is agreement results UV–vis optical deposited pressed pellets. flatband , obtained from measurements, 0.53 V
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