Journal article

Publication year: 2004

Pages: C62-C68

Journal: Journal of The Electrochemical Society

Volume number: 151

Issue number: 1

ISSN: 0013-4651

eISSN: 1945-7111

DOI Link: https://doi.org/10.1149/1.1630596

Publisher: The Electrochemical Society

Abstract: 
Self-assembled growth of ZnO films modified with N,N'-bis(ethylenesulfate)-3,4,9,10-perylene tetracarboxylic acid diimide (SO3EtPTCDI) has been realized by a one-step cathodic electrodeposition. Scanning electron microscopy and X-ray diffraction examination of the ZnO/SO3EtPTCDI hybrid films has revealed morphological and structural changes with increasing dye concentration in the deposition bath. The photoelectrochemical action spectra demonstrate a significant enhancement of the anodic photocurrent for ZnO/SO3EtPTCDI electrodes in comparison to that of pure ZnO electrodes, thus evidencing photosensitization of ZnO by the adsorbed dye molecules. A maximum incident photon-to-current conversion efficiency of 7.0% was obtained for such hybrid thin-film electrodes. Impedance measurements indicated a positive shift of the flatband potential of ZnO as a consequence of dye adsorption, enabling the injection of photogenerated electrons from the lowest unoccupied pi-molecular orbital of SO3EtPTCDI into the conduction band of ZnO. (C) 2003 The Electrochemical Society.

Harvard Citation style: Oekermann, T., Karuppuchamy, S., Yoshida, T., Schlettwein, D., Wöhrle, D. and Minoura, H. (2004) Electrochemical self-assembly of ZnO/SO3EtPTCDI hybrid photoelectrodes, Journal of The Electrochemical Society, 151(1), pp. C62-C68. https://doi.org/10.1149/1.1630596

APA Citation style: Oekermann, T., Karuppuchamy, S., Yoshida, T., Schlettwein, D., Wöhrle, D., & Minoura, H. (2004). Electrochemical self-assembly of ZnO/SO3EtPTCDI hybrid photoelectrodes. Journal of The Electrochemical Society. 151(1), C62-C68. https://doi.org/10.1149/1.1630596