A layered wide-gap oxyhalide semiconductor with an infinite ZnO2 square planar sheet: Sr2ZnO2Cl2

Yu Su; Yoshihiro Tsujimoto; Akira Miura; Shinichiro Asai; Maxim Avdeev; Hiraku Ogino; Miho Ako; Alexei A. Belik; Takatsugu Masuda; Tetsuo Uchikoshi; Kazunari Yamaura

doi:10.1039/C7CC01011G

A layered wide-gap oxyhalide semiconductor with an infinite ZnO₂ square planar sheet: Sr₂ZnO₂Cl₂†

Yu Su,*^ab Yoshihiro Tsujimoto,

*^a Akira Miura,

^c Shinichiro Asai,^d Maxim Avdeev,^e Hiraku Ogino,^f Miho Ako,^g Alexei A. Belik,^a Takatsugu Masuda,^d Tetsuo Uchikoshi^a and Kazunari Yamaura^ab

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* Corresponding authors

^a Research Centre for Functional Materials, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
E-mail: SU.Yu@nims.go.jp, TSUJIMOTO.Yoshihiro@nims.go.jp

^b Graduate School of Chemical Sciences and Engineering, Hokkaido University, North 13 West 8, Kita-ku, Sapporo 060-0808, Japan

^c Faculty of Engineering, Hokkaido University, North 13 West 8, Kita-ku, Sapporo 060-0808, Japan

^d Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan

^e Bragg Institute, Australian Nuclear Science and Technology Organization, Lucas Heights, New South Wales 2234, Australia

^f National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan

^g Division of Molecular Science, Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan

Abstract

A new square-planar zinc oxyhalide, Sr₂ZnO₂Cl₂, was successfully synthesized using a high-pressure method. Absorption spectroscopy revealed an indirect band gap of 3.66 eV. Electronic structure calculations indicated a strong hybridization between Zn 3d_x²−y² and O 2p orbitals, which is distinct from tetrahedrally coordinated ZnO.

Chemical Communications

A layered wide-gap oxyhalide semiconductor with an infinite ZnO₂ square planar sheet: Sr₂ZnO₂Cl₂†

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A layered wide-gap oxyhalide semiconductor with an infinite ZnO₂ square planar sheet: Sr₂ZnO₂Cl₂

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