Capturing Local Structure Modulations of Photoexcited BiVO by Ultrafast Transient XAFS
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Ultrafast excitation of photocatalytically active BiVO was characterized by femto- and picosecond transient X-ray absorption fine structure spectroscopy. An initial photoexcited state (≪500 fs) changed to a metastable state accompanied by a structural change with a time constant of ∼14 ps. The structural change might stabilize holes on oxygen atoms since the interaction between Bi and O increases.
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