Photo-electrochemical effects in topological insulator Sb2Te3 thin films

Authors

Zhiyong Yu, University of Shanghai for Science and Technology
Wenqiao Han, Southern University of Science and Technology
Zengji Yue, University of Shanghai for Science and Technology
Boyuan Cai, University of Shanghai for Science and Technology
Zhengfen Wan, University of Shanghai for Science and Technology
Hua Lu, Northwestern Polytechnical University
Khay See, University of Wollongong
Zhenxiang Cheng, University of Wollongong
Min Gu, University of Shanghai for Science and Technology
Songbai Hu, Southern University of Science and Technology

Publication Name

Optical Materials

Abstract

Topological insulators have attracted increased attention owing to their fascinating properties and important applications, such as spintronic devices, quantum computers, and optoelectronic devices. In this study, we demonstrated the photo-electrochemical properties of a typical topological insulator material, Sb2Te3 thin film. Sb2Te3 thin films were grown on a glass substrate using atomic layer deposition subsequently, samples or thin films were characterized using Raman spectroscopy, scanning electron microscopy, X-ray diffraction, and atomic force microscopy. The as-fabricated Sb2Te3 thin films have continuous and coarse surfaces with high crystallization. The photo-electrochemical effects of Sb2Te3 electrodes were observed. We show that the Sb2Te3 films have potential in photocatalytic water splitting application.

Open Access Status

This publication is not available as open access

Volume

143

Article Number

114240

Funding Number

YJKY230015

Funding Sponsor

National Natural Science Foundation of China