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Photo-Current Enhancement at Cu/p-Cu2O/rGO- Electrolyte Interface

Journal of Scientific and Technical Research

Volume 6 Issue 1

Published: 2016
Author(s) Name: S.P.A.U.K. Samarakoon, C.A.N. Fernando | Author(s) Affiliation:
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Abstract

A considerable photo-current 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 photo-current 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 carriers as 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, photo-current action spectra and the time development of the photocurrent of photo-electrochemical cells.

Keywords: Photo-current, Electrolyte Interface, Photo Electrochemical Cell

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