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Uemura, Yohei; Kido, Daiki; Koide, Akihiro; Wakisaka, Yuki; Niwa, Yasuhiro; Nozawa, Shunsuke; Ichiyanagi, Kohei; Fukaya, Ryo; Adachi, Shin-ichi; Katayama, Tetsuo; Togashi, Tadashi; Owada, Shigeki; Yabashi, Makina; Hatada, Keisuke; Iwase, Akihide; Kudo, Akihiko; Takakusagi, Satoru; Yokoyamaa, Toshihiko; Asakura, Kiyotaka (2017): Capturing local structure modulations of photoexcited BiVO4 by ultrafast transient XAFS. In: Chemical Communications, Vol. 53, No. 53: pp. 7314-7317
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Abstract

Ultrafast excitation of photocatalytically active BiVO4 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 similar to 14 ps. The structural change might stabilize holes on oxygen atoms since the interaction between Bi and O increases.