Synthesis of Hydride-Doped Perovskite Stannate with Visible Light Absorption Capability

Masashi Nakamura; Hirofumi Akamatsu; Kotaro Fujii; Yusuke Nambu; Yoichi Ikeda; Tomoki Kanazawa; Shunsuke Nozawa; Masatomo Yashima; Katsuro Hayashi; Kazuhiko Maeda

doi:10.1021/acs.inorgchem.2c00398

Synthesis of Hydride-Doped Perovskite Stannate with Visible Light Absorption Capability

Masashi Nakamura, Hirofumi Akamatsu, Kotaro Fujii, Yusuke Nambu, Yoichi Ikeda, Tomoki Kanazawa, Shunsuke Nozawa, Masatomo Yashima, Katsuro Hayashi, Kazuhiko Maeda

Functional Materials Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

Narrow-gap semiconductors with visible light absorption capability have attracted attention as photofunctional materials. H^--doped BaSn_0.7Y_0.3O_3-δcontaining Sn(II) species was recently reported to absorb visible light up to 600 nm, which represents the first demonstration of oxyhydride-based visible-light-absorbers. In the present study, a more detailed investigation was made to obtain information on the synthesis and properties of H^--doped perovskite-type stannate with respect to the A-site cation of the material and the preparation conditions. H^--doped ASn_0.7Y_0.3O_3-δ(A = Ba, Ba_0.5Sr_0.5, and Sr) obtained by the reaction of ASn_0.7Y_0.3O_3-δprecursors with CaH₂at 773 K under vacuum conditions was shown to have almost the same bandgap (ca. 2.1 eV), regardless of the A-site cation. Physicochemical measurements and theoretical calculations revealed that the identical bandgaps of H^--doped ASn_0.7Y_0.3O_3-δare due to the simultaneous shift of the midgap states composed of Sn²⁺with the conduction band minimum. Experimental results also indicated that the appropriate preparation conditions with respect to Y³⁺-substitution and the temperature for the synthesis of the ASn_0.7Y_0.3O_3-δprecursors were essential to obtain H^--doped products that have a low density of defects.

Original language	English
Pages (from-to)	6584-6593
Number of pages	10
Journal	Inorganic chemistry
Volume	61
Issue number	17
DOIs	https://doi.org/10.1021/acs.inorgchem.2c00398
Publication status	Published - May 2 2022

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Inorganic Chemistry

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10.1021/acs.inorgchem.2c00398

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@article{fd2025b98d374c1d9017af965f445f38,

title = "Synthesis of Hydride-Doped Perovskite Stannate with Visible Light Absorption Capability",

abstract = "Narrow-gap semiconductors with visible light absorption capability have attracted attention as photofunctional materials. H--doped BaSn0.7Y0.3O3-δcontaining Sn(II) species was recently reported to absorb visible light up to 600 nm, which represents the first demonstration of oxyhydride-based visible-light-absorbers. In the present study, a more detailed investigation was made to obtain information on the synthesis and properties of H--doped perovskite-type stannate with respect to the A-site cation of the material and the preparation conditions. H--doped ASn0.7Y0.3O3-δ(A = Ba, Ba0.5Sr0.5, and Sr) obtained by the reaction of ASn0.7Y0.3O3-δprecursors with CaH2at 773 K under vacuum conditions was shown to have almost the same bandgap (ca. 2.1 eV), regardless of the A-site cation. Physicochemical measurements and theoretical calculations revealed that the identical bandgaps of H--doped ASn0.7Y0.3O3-δare due to the simultaneous shift of the midgap states composed of Sn2+with the conduction band minimum. Experimental results also indicated that the appropriate preparation conditions with respect to Y3+-substitution and the temperature for the synthesis of the ASn0.7Y0.3O3-δprecursors were essential to obtain H--doped products that have a low density of defects.",

author = "Masashi Nakamura and Hirofumi Akamatsu and Kotaro Fujii and Yusuke Nambu and Yoichi Ikeda and Tomoki Kanazawa and Shunsuke Nozawa and Masatomo Yashima and Katsuro Hayashi and Kazuhiko Maeda",

note = "Funding Information: This work was supported by Grants-in-Aid for Scientific Research on the Innovative Area Mixed Anions (Nos. JP16H06440, JP16H06441, JP17H05473, and JP19H04683) from the Japan Society for the Promotion of Science (JSPS) and the Japan Science and Technology Agency (JST) CREST program (JPMJCR20R2). The neutron and synchrotron experiments were performed with the approval of the Institute for Solid State Physics, The University of Tokyo (Proposal Nos. 21578, 22063, 22614, 22610), and JASRI (Proposal Nos. 2021A1599, 2021B1826), respectively. Publisher Copyright: {\textcopyright} 2022 American Chemical Society. All rights reserved.",

year = "2022",

month = may,

day = "2",

doi = "10.1021/acs.inorgchem.2c00398",

language = "English",

volume = "61",

pages = "6584--6593",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "17",

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T1 - Synthesis of Hydride-Doped Perovskite Stannate with Visible Light Absorption Capability

AU - Nakamura, Masashi

AU - Akamatsu, Hirofumi

AU - Fujii, Kotaro

AU - Nambu, Yusuke

AU - Ikeda, Yoichi

AU - Kanazawa, Tomoki

AU - Nozawa, Shunsuke

AU - Yashima, Masatomo

AU - Hayashi, Katsuro

AU - Maeda, Kazuhiko

N1 - Funding Information: This work was supported by Grants-in-Aid for Scientific Research on the Innovative Area Mixed Anions (Nos. JP16H06440, JP16H06441, JP17H05473, and JP19H04683) from the Japan Society for the Promotion of Science (JSPS) and the Japan Science and Technology Agency (JST) CREST program (JPMJCR20R2). The neutron and synchrotron experiments were performed with the approval of the Institute for Solid State Physics, The University of Tokyo (Proposal Nos. 21578, 22063, 22614, 22610), and JASRI (Proposal Nos. 2021A1599, 2021B1826), respectively. Publisher Copyright: © 2022 American Chemical Society. All rights reserved.

PY - 2022/5/2

Y1 - 2022/5/2

N2 - Narrow-gap semiconductors with visible light absorption capability have attracted attention as photofunctional materials. H--doped BaSn0.7Y0.3O3-δcontaining Sn(II) species was recently reported to absorb visible light up to 600 nm, which represents the first demonstration of oxyhydride-based visible-light-absorbers. In the present study, a more detailed investigation was made to obtain information on the synthesis and properties of H--doped perovskite-type stannate with respect to the A-site cation of the material and the preparation conditions. H--doped ASn0.7Y0.3O3-δ(A = Ba, Ba0.5Sr0.5, and Sr) obtained by the reaction of ASn0.7Y0.3O3-δprecursors with CaH2at 773 K under vacuum conditions was shown to have almost the same bandgap (ca. 2.1 eV), regardless of the A-site cation. Physicochemical measurements and theoretical calculations revealed that the identical bandgaps of H--doped ASn0.7Y0.3O3-δare due to the simultaneous shift of the midgap states composed of Sn2+with the conduction band minimum. Experimental results also indicated that the appropriate preparation conditions with respect to Y3+-substitution and the temperature for the synthesis of the ASn0.7Y0.3O3-δprecursors were essential to obtain H--doped products that have a low density of defects.

AB - Narrow-gap semiconductors with visible light absorption capability have attracted attention as photofunctional materials. H--doped BaSn0.7Y0.3O3-δcontaining Sn(II) species was recently reported to absorb visible light up to 600 nm, which represents the first demonstration of oxyhydride-based visible-light-absorbers. In the present study, a more detailed investigation was made to obtain information on the synthesis and properties of H--doped perovskite-type stannate with respect to the A-site cation of the material and the preparation conditions. H--doped ASn0.7Y0.3O3-δ(A = Ba, Ba0.5Sr0.5, and Sr) obtained by the reaction of ASn0.7Y0.3O3-δprecursors with CaH2at 773 K under vacuum conditions was shown to have almost the same bandgap (ca. 2.1 eV), regardless of the A-site cation. Physicochemical measurements and theoretical calculations revealed that the identical bandgaps of H--doped ASn0.7Y0.3O3-δare due to the simultaneous shift of the midgap states composed of Sn2+with the conduction band minimum. Experimental results also indicated that the appropriate preparation conditions with respect to Y3+-substitution and the temperature for the synthesis of the ASn0.7Y0.3O3-δprecursors were essential to obtain H--doped products that have a low density of defects.

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U2 - 10.1021/acs.inorgchem.2c00398

DO - 10.1021/acs.inorgchem.2c00398

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VL - 61

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EP - 6593

JO - Inorganic Chemistry

JF - Inorganic Chemistry

SN - 0020-1669

IS - 17

ER -

Synthesis of Hydride-Doped Perovskite Stannate with Visible Light Absorption Capability

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