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Samarakoon, S. P. A. U. K.
- Photo-Current Enhancement in the Cu/rGO/n-Cu2O Photo-Electrode at Electrolyte Interface
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Authors
Affiliations
1 Nano-Technology Research Laboratory, Department of Electronics, Wayamba University of Sri Lanka, Kuliyapitiya, LK
1 Nano-Technology Research Laboratory, Department of Electronics, Wayamba University of Sri Lanka, Kuliyapitiya, LK
Source
Journal of Scientific and Technical Research (Sharda University, Noida), Vol 6, No 1 (2016), Pagination: 32-36Abstract
A simple method was found to fabricate Cu/rGO/n-Cu2O photo-electrode to enhance the photocurrent with compared to the device Cu/n-Cu2O photo-electrode at semiconductor-electrolyte interface. Reduced graphene oxide (rGO) was fabricated on a well cleaned copper sheet using electrophoretic deposition (EPD) technique to fabricate Cu/rGO. Thereafter Cu/rGO electrode was boiled in a 10-4M CuSO4 solution to fabricate Cu/rGO/n-Cu2O photo-electrode for the first time. Here The rGO acts as a good electron acceptor ton-Cu2O photo-generated electrons enhancing the charge separation process suppressing the recombination process of the photo-generated charge carriers.Keywords
n-Cu2O, rGO, Photoelectron Chemical Cell.
References
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- Photo-Current Enhancement at Cu/P-Cu2O/rGO-Electrolyte Interface
Abstract Views :204 |
PDF Views:3
Authors
Affiliations
1 Nano Technology Research Laboratory, Department of Electronics, Wayamba University of Sri Lanka, LK
1 Nano Technology Research Laboratory, Department of Electronics, Wayamba University of Sri Lanka, LK
Source
Journal of Scientific and Technical Research (Sharda University, Noida), Vol 6, No 1 (2016), Pagination: 37-41Abstract
A considerable photocurrent enhancement was found at the Cu/p-Cu2O/rGO-electrolyte interface in a photo-electrochemical cell with compared to that of Cu/p-Cu2O-electrolyte interface. The reason for the photocurrent enhancement may be due to the efficient charge separation process provided at Cu/p-Cu2O/rGO-electrolyte interface. Here rGO (reduced graphene oxide) acts as an electron acceptor for the photo-generated charge carriersas it readily accept electrons from the conduction band of p-Cu2O. rGO was synthesized using electro-phoretic deposition (EPD) technique. Fabricated samples were characterized using diffuse reflectance spectra, photocurrent action spectra and the time development of the photocurrent of photo-electrochemical cells.Keywords
Photo-Current, Electrolyte Interface, Photo Electrochemical Cell.References
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- An, S. J., Zhu, Y., Lee, S. H., Stoller, M. D., Emilsson, T., Park, S., Velamakanni, A., An, J., and Ruoff, R. S. (2010). Journal of Physical Chemistry Letter, 1, 1259
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- Hummers, W. S., and. Offeman, R. E. (1958). Journal of American Chemical Society, 80, 1339
- Zhang, Y., Tang, Z., Fu, X., and Xu, Y. (2010). ACS Nano, 4, 7303-7314