[13a-D419-1~12] 21.1 Joint Session K "Wide bandgap oxide semiconductor materials and devices"

[13a-D419-6] Orientation Dependence on SrTiO₃ in Photoelectrochemical Water Splitting

〇(M1C)Soraya Shizumi¹, Yuki Imazeki¹, Supawan Ngamprapawat¹, Masahiro Sato², Katsushi Fujii³, Tsutomu Minegishi², Yoshiaki Nakano¹, Masakazu Sugiyama² (1.Univ. Tokyo, 2.Univ. Tokyo, RCAST, 3.RIKEN)

Keywords:SrTiO3, photoelectrochemistry, water splitting

SrTiO₃ is one of the photocatalysts which can produce hydrogen utilizing solar energy. In the present study, the crystal orientation dependence of SrTiO₃ in photoelectrochemical water splitting is investigated. The anodic photocurrent of (110) plane showed the largest photocurrent and this result indicates that (110) planes work as an efficient oxygen evolution sites. We will report details including flat-band potential in this presentation.