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 journalArticlepeer-review

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 languageEnglish
Article number174304
JournalJournal of Applied Physics
Volume129
Issue number17
DOIs
Publication statusPublished - May 7 2021

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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