Continuously controllable photoconductance in freestanding BiFeO3 by the macroscopic flexoelectric effect

Rui Guo; Lu You; Weinan Lin; Amr Abdelsamie; Xinyu Shu; Guowei Zhou; Shaohai Chen; Liang Liu; Xiaobing Yan; Junling Wang; Jingsheng Chen

doi:10.1038/s41467-020-16465-5

Nature Communications (May 2020)

Continuously controllable photoconductance in freestanding BiFeO3 by the macroscopic flexoelectric effect

Rui Guo,
Lu You,
Weinan Lin,
Amr Abdelsamie,
Xinyu Shu,
Guowei Zhou,
Shaohai Chen,
Liang Liu,
Xiaobing Yan,
Junling Wang,
Jingsheng Chen

Affiliations

Rui Guo: Department of Materials Science and Engineering, National University of Singapore
Lu You: Jiangsu Key Laboratory of Thin Films, School of Physical Science and Technology, Soochow University
Weinan Lin: Department of Materials Science and Engineering, National University of Singapore
Amr Abdelsamie: Department of Materials Science and Engineering, Nanyang Technological University
Xinyu Shu: Department of Materials Science and Engineering, National University of Singapore
Guowei Zhou: Department of Materials Science and Engineering, National University of Singapore
Shaohai Chen: Department of Materials Science and Engineering, National University of Singapore
Liang Liu: Department of Materials Science and Engineering, National University of Singapore
Xiaobing Yan: College of Electron and Information Engineering, Hebei University
Junling Wang: Department of Materials Science and Engineering, Nanyang Technological University
Jingsheng Chen: Department of Materials Science and Engineering, National University of Singapore

DOI: https://doi.org/10.1038/s41467-020-16465-5
Journal volume & issue: Vol. 11, no. 1
pp. 1 – 9

Abstract

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Previous methods to generate strain gradient and flexoelectricity are limited to a localized effect or cannot be tuned continuously. Here, the authors achieve macroscale continuously controllable strain gradient in freestanding ferroelectric thin film. Multilevel photoconductance in BiFeO3 films can be achieved by coupling between the flexoelectric and ferroelectric photovoltaic effect.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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