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

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

2 Citations (Scopus)

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.

Original language	English
Article number	174304
Journal	Journal of Applied Physics
Volume	129
Issue number	17
DOIs	https://doi.org/10.1063/5.0046501
Publication status	Published - May 7 2021

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1063/5.0046501

Cite this

@article{33f77f7f9b514016a9bf43bd9ea9b9ad,

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).",

year = "2021",

month = may,

day = "7",

doi = "10.1063/5.0046501",

language = "English",

volume = "129",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics Publising LLC",

number = "17",

}

TY - JOUR

T1 - Electrostatic potential measurement at the Pt/TiO2interface using electron holography

AU - Nakajima, Hiroshi

AU - Tanigaki, Toshiaki

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).

PY - 2021/5/7

Y1 - 2021/5/7

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.

UR - http://www.scopus.com/inward/record.url?scp=85105502279&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85105502279&partnerID=8YFLogxK

U2 - 10.1063/5.0046501

DO - 10.1063/5.0046501

M3 - Article

AN - SCOPUS:85105502279

SN - 0021-8979

VL - 129

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 17

M1 - 174304

ER -

Electrostatic potential measurement at the Pt/TiO₂interface using electron holography

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this