Electrostatic potential measurement at the Pt/TiO2interface using electron holography

Hiroshi Nakajima; Toshiaki Tanigaki; Takaaki Toriyama; Mahito Yamamoto; Hidekazu Tanaka; Yasukazu Murakami

doi:10.1063/5.0046501

Electrostatic potential measurement at the Pt/TiO₂interface using electron holography

Hiroshi Nakajima, Toshiaki Tanigaki, Takaaki Toriyama, Mahito Yamamoto, Hidekazu Tanaka, Yasukazu Murakami

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

2 被引用数 (Scopus)

抄録

The interface of Pt/TiO2 plays an essential role in device engineering and chemical reactions. Here, we report the electrostatic potential distribution of a Pt/TiO2 interface by electron holography. The decrease in the electrostatic potential exists at TiO2 in the vicinity of the interface, indicating the presence of negative charge due to electron transfer from TiO2 and Pt. The decrease in the electrostatic potential can be understood in the difference in work functions between Pt and TiO2. This study reveals the interplay between Pt and TiO2 and the usefulness of electron holography for probing the potential in nanoscale interfaces.

本文言語	英語
論文番号	174304
ジャーナル	Journal of Applied Physics
巻	129
号	17
DOI	https://doi.org/10.1063/5.0046501
出版ステータス	出版済み - 5月 7 2021

!!!All Science Journal Classification (ASJC) codes

物理学および天文学（全般）

文献へのアクセス

10.1063/5.0046501

他のファイルとリンク

引用スタイル

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title = "Electrostatic potential measurement at the Pt/TiO2interface using electron holography",

abstract = "The interface of Pt/TiO2 plays an essential role in device engineering and chemical reactions. Here, we report the electrostatic potential distribution of a Pt/TiO2 interface by electron holography. The decrease in the electrostatic potential exists at TiO2 in the vicinity of the interface, indicating the presence of negative charge due to electron transfer from TiO2 and Pt. The decrease in the electrostatic potential can be understood in the difference in work functions between Pt and TiO2. This study reveals the interplay between Pt and TiO2 and the usefulness of electron holography for probing the potential in nanoscale interfaces. ",

author = "Hiroshi Nakajima and Toshiaki Tanigaki and Takaaki Toriyama and Mahito Yamamoto and Hidekazu Tanaka and Yasukazu Murakami",

note = "Funding Information: We thank Koji Shigematsu (Kyushu University) for help with the experiments. This study was supported in part by JST CREST (No. JPMJCR1664) and JSPS KAKENHI (Nos, JP18H03845 and JP21K14538). Publisher Copyright: {\textcopyright} 2021 Author(s).",

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AU - Nakajima, Hiroshi

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AU - Toriyama, Takaaki

AU - Yamamoto, Mahito

AU - Tanaka, Hidekazu

AU - Murakami, Yasukazu

N1 - Funding Information: We thank Koji Shigematsu (Kyushu University) for help with the experiments. This study was supported in part by JST CREST (No. JPMJCR1664) and JSPS KAKENHI (Nos, JP18H03845 and JP21K14538). Publisher Copyright: © 2021 Author(s).

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N2 - The interface of Pt/TiO2 plays an essential role in device engineering and chemical reactions. Here, we report the electrostatic potential distribution of a Pt/TiO2 interface by electron holography. The decrease in the electrostatic potential exists at TiO2 in the vicinity of the interface, indicating the presence of negative charge due to electron transfer from TiO2 and Pt. The decrease in the electrostatic potential can be understood in the difference in work functions between Pt and TiO2. This study reveals the interplay between Pt and TiO2 and the usefulness of electron holography for probing the potential in nanoscale interfaces.

AB - The interface of Pt/TiO2 plays an essential role in device engineering and chemical reactions. Here, we report the electrostatic potential distribution of a Pt/TiO2 interface by electron holography. The decrease in the electrostatic potential exists at TiO2 in the vicinity of the interface, indicating the presence of negative charge due to electron transfer from TiO2 and Pt. The decrease in the electrostatic potential can be understood in the difference in work functions between Pt and TiO2. This study reveals the interplay between Pt and TiO2 and the usefulness of electron holography for probing the potential in nanoscale interfaces.

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