[15a-WL2_101-1~10] 6.3 Oxide electronics

11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)

[15a-WL2_101-9] PEEM analysis of anatase-type TiO₂ thin films synthesized by solvothermal method

〇(M1)Yusuke Fukui^1,4,5, Tsukasa Imura¹, Kosuke Ono^2,3, Yushi Sumida^1,4,5, Masaru Shimomura³, Takuo Ohkochi^4,5,6 (1.Grad. Sch. Eng., U. Hyogo, 2.Grad. Sch. Eng. Nagoya Univ., 3.Grad. Sch. Sci. Tech., Shizuoka Univ., 4.LASTI, U. Hyogo, 5.RIKEN RSC, 6.JASRI)

Keywords:

Synchrotron radiation,Photoemission electron microscopy,Photocatalyst

We investigated anatase TiO₂ thin films grown on SrTiO₃ (STO) substrates by the solvothermal method using X-ray absorption spectroscopy (XAS) and spectromicroscopic analysis based on photoemission electron microscopy (PEEM) at BL17SU of SPring-8, with the aim of probing the surface chemical states. In addition, the surface was systematically etched by argon ion milling to analyze the chemical states inside the thin films. In this presentation, we discuss the electronic states and spatial distributions of fluorine and nitrogen, as well as the extent of their penetration into the film interior.