Development of semiconductor electrodes based on the analysis using frequency-resolved spectroscopy

2014 Fiscal Year Final Research Report

• Project/Area Number: 23686114
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Catalyst/Resource chemical process
• Research Institution: The University of Kitakyushu
• Principal Investigator: AMANO Fumiaki 北九州市立大学, 国際環境工学部, 准教授 (10431347)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: 酸化チタン / 酸化タングステン / 半導体電極 / 光電気化学

Outline of Final Research Achievements

Photoelectrochemical water splitting is a promising technology for hydrogen production using solar energy without exhausting CO2. However, the design concepts for photoelectrodes with high quantum efficiency have not been clarified even in the case of conventional metal oxides such as TiO2 and WO3. In this study, we investigated the effect of internal resistance, carrier densities, and the rate constants of photoexcited carriers of TiO2 and WO3 electrodes on their photocatalytic and photoelectrochemical activities using the techniques to measure frequency response, electrochemical impedance spectroscopy and intensity modulated photocurrent spectroscopy (IMPS).

Free Research Field

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