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Electrochemical Synthesis of p-Type CuFeO2 Electrodes for Use in a Photoelectrochemical Cell
Carrie G Read1, Yiseul Park1, Kyoung-Shin Choi1
1Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States.
Abstract:
A new electrodeposition route was developed to prepare p-type CuFeO2 as a thin film-type electrode for use as a photocathode in a solar water splitting cell. The resulting p-CuFeO2 film has a bandgap energy of ca. 1.55 eV, with its conduction band edge located at a more negative potential than the reduction potential of water. Various photoelectrochemical properties of the p-CuFeO2 electrode were investigated, and its photoelectrochemical hydrogen production in 1 M NaOH solution was confirmed by gas chromatography. The incident photon-to-current conversion efficiency plot confirmed that p-CuFeO2 has the ability to utilize the entire range of visible light.
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