DataVXAdvanced MaterialsPaper
journal article·2017-12

Electric‐Field‐Controlled Phase Transformation in WO3 Thin Films through Hydrogen Evolution

Meng Wang, Shengchun Shen, Jinyang Ni, Nianpeng Lu, Zhuolu Li, Hao‐Bo Li, Shuzhen Yang, Tianzhe Chen, Jingwen Guo, Yujia Wang, Hongjun Xiang, Pu Yu

Advanced Materials· Volume 29· Issue 46
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Source abstract

Abstract

Abstract Field‐effect transistors with ionic‐liquid gating (ILG) have been widely employed and have led to numerous intriguing phenomena in the last decade, due to the associated excellent carrier‐density tunability. However, the role of the electrochemical effect during ILG has become a heavily debated topic recently. Herein, using ILG, a field‐induced insulator‐to‐metal transition is achieved in WO3 thin films with the emergence of structural transformations of the whole films. The subsequent secondary‐ion mass spectrometry study provides solid evidence that electrochemically driven hydrogen evolution dominates the discovered electrical and structural transformation through surface absorption and bulk intercalation.
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Research context

Electronic materials

OpenAlex topics: Transition Metal Oxide Nanomaterials · Electronic and Structural Properties of Oxides · Gas Sensing Nanomaterials and Sensors

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics Tsinghua University Beijing 100084 China

Key Laboratory of Computational Physical Sciences (Ministry of Education) State Key Laboratory of Surface Physics and Department of Physics Fudan University Shanghai 200433 China

Collaborative Innovation Center of Advanced Microstructures Nanjing 210093 China

Collaborative Innovation Center of Quantum Matter Beijing 100084 China

RIKEN Center for Emergent Matter Science (CEMS) Wako 351‐198 Japan

Funding

National Basic Research Program of China · Initiative Research Projects of Tsinghua University

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