Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 13, Issue 19, Pages 4207-4214Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.2c00295
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Funding
- European Research Council (ERC) under the European Union [340279]
- Netherlands Center for Multiscale Catalytic Energy Conversion (MCEC) from The Netherlands Organisation for Scientific Research (NWO)
- Institute for Catalysis, Hokkaido University [18A1005]
- Ministry of Education of Korea [NRF2020R1A2C1007416, 2018R1D1A1B07046676]
- Ministry of Science and ICT of Korea [2019-second-SSS-013]
- National Research Foundation of Korea [2018R1D1A1B07046676] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this study, the photoexcited state of a hematite thin film was investigated using X-ray absorption spectroscopy, and the 200 fs decay time of the hole state in the valence band was observed.
Hematite (alpha-Fe2O3) is a photoelectrode for the water splitting process because of its relatively narrow bandgap and abundance in the earth's crust. In this study, the photoexcited state of a hematite thin film was investigated with femtosecond oxygen K-edge X-ray absorption spectroscopy (XAS) at the PAL-XFEL in order to follow the dynamics of its photoexcited states. The 200 fs decay time of the hole state in the valence band was observed via its corresponding XAS feature.
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