Flexo-phototronic effect in centro-symmetric BiVO4 epitaxial films

Pao Wen Shao; Meng Chin Lin; Qian Zhuang; Jiawei Huang; Shi Liu; Hsiao Wen Chen; Hsiang Lin Liu; Yu Jung Lu; Yung Jung Hsu; Jyh Ming Wu; Yi Chun Chen; Ying Hao Chu

doi:10.1016/j.apcatb.2022.121367

Flexo-phototronic effect in centro-symmetric BiVO₄ epitaxial films

Pao Wen Shao, Meng Chin Lin, Qian Zhuang, Jiawei Huang, Shi Liu, Hsiao Wen Chen, Hsiang Lin Liu, Yu Jung Lu, Yung Jung Hsu, Jyh Ming Wu, Yi Chun Chen, Ying Hao Chu

Department of Physics

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

2 Citations (Scopus)

Abstract

With exciting functionality, topological defects in ferroic system have attracted significant attention. Under proper design, the emergence of polar domain walls in non-polar ferroelastics enables a flexo-phototronic effect. In this study, we revealed ferroelastic twin texture with localized flexoelectric effect in centrosymmetric epitaxial BiVO₄ film. Supported by photodeposition and localized photocurrent analysis, we found the flexoelectric effect confined at domain wall area facilitates the photocarrier transport and the flexo-phototronic mechanism was further supported by dye-degradation and generation of reactive radicals. This work not only provides new insights into the introduction of flexo-phototronic effects in non-polar materials, but also sheds light on the use of material inhomogeneity for acquiring multifunctionality.

Original language	English
Article number	121367
Journal	Applied Catalysis B: Environmental
Volume	312
DOIs	https://doi.org/10.1016/j.apcatb.2022.121367
Publication status	Published - 2022 Sept 5

All Science Journal Classification (ASJC) codes

Catalysis
Environmental Science(all)
Process Chemistry and Technology

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10.1016/j.apcatb.2022.121367

Cite this

@article{f32560c74c80470099e3a3c73dfb23ad,

title = "Flexo-phototronic effect in centro-symmetric BiVO4 epitaxial films",

abstract = "With exciting functionality, topological defects in ferroic system have attracted significant attention. Under proper design, the emergence of polar domain walls in non-polar ferroelastics enables a flexo-phototronic effect. In this study, we revealed ferroelastic twin texture with localized flexoelectric effect in centrosymmetric epitaxial BiVO4 film. Supported by photodeposition and localized photocurrent analysis, we found the flexoelectric effect confined at domain wall area facilitates the photocarrier transport and the flexo-phototronic mechanism was further supported by dye-degradation and generation of reactive radicals. This work not only provides new insights into the introduction of flexo-phototronic effects in non-polar materials, but also sheds light on the use of material inhomogeneity for acquiring multifunctionality.",

author = "Shao, {Pao Wen} and Lin, {Meng Chin} and Qian Zhuang and Jiawei Huang and Shi Liu and Chen, {Hsiao Wen} and Liu, {Hsiang Lin} and Lu, {Yu Jung} and Hsu, {Yung Jung} and Wu, {Jyh Ming} and Chen, {Yi Chun} and Chu, {Ying Hao}",

note = "Funding Information: This work is supported by Ministry of Science and Technology, Taiwan (grant No. MOST 109-2124-M-009-009- , MOST 109-2124-M-009-001-MY3 , MOST 109-2634-F-009-028 , MOST 106-2112-M-001-036-MY3 , MOST 109-2112-M-001-043-MY3 ) and the Center for Emergent Functional Matter Science of National Chiao Tung University from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan. H.-L. L. acknowledgments the support from Ministry of Science and Technology, Taiwan under grant number MOST 108-2112-M-003-013 . Z. Q., J. H. and S. L. acknowledges the support from Westlake Education Foundation and the computational resource from Westlake University HPC Center. Y.-J. L. acknowledges the support from Academia Sinica ( AS-CDA-108-M08 ). Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = sep,

day = "5",

doi = "10.1016/j.apcatb.2022.121367",

language = "English",

volume = "312",

journal = "Applied Catalysis B: Environmental",

issn = "0926-3373",

publisher = "Elsevier",

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T1 - Flexo-phototronic effect in centro-symmetric BiVO4 epitaxial films

AU - Shao, Pao Wen

AU - Lin, Meng Chin

AU - Zhuang, Qian

AU - Huang, Jiawei

AU - Liu, Shi

AU - Chen, Hsiao Wen

AU - Liu, Hsiang Lin

AU - Lu, Yu Jung

AU - Hsu, Yung Jung

AU - Wu, Jyh Ming

AU - Chen, Yi Chun

AU - Chu, Ying Hao

N1 - Funding Information: This work is supported by Ministry of Science and Technology, Taiwan (grant No. MOST 109-2124-M-009-009- , MOST 109-2124-M-009-001-MY3 , MOST 109-2634-F-009-028 , MOST 106-2112-M-001-036-MY3 , MOST 109-2112-M-001-043-MY3 ) and the Center for Emergent Functional Matter Science of National Chiao Tung University from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan. H.-L. L. acknowledgments the support from Ministry of Science and Technology, Taiwan under grant number MOST 108-2112-M-003-013 . Z. Q., J. H. and S. L. acknowledges the support from Westlake Education Foundation and the computational resource from Westlake University HPC Center. Y.-J. L. acknowledges the support from Academia Sinica ( AS-CDA-108-M08 ). Publisher Copyright: © 2022 Elsevier B.V.

PY - 2022/9/5

Y1 - 2022/9/5

N2 - With exciting functionality, topological defects in ferroic system have attracted significant attention. Under proper design, the emergence of polar domain walls in non-polar ferroelastics enables a flexo-phototronic effect. In this study, we revealed ferroelastic twin texture with localized flexoelectric effect in centrosymmetric epitaxial BiVO4 film. Supported by photodeposition and localized photocurrent analysis, we found the flexoelectric effect confined at domain wall area facilitates the photocarrier transport and the flexo-phototronic mechanism was further supported by dye-degradation and generation of reactive radicals. This work not only provides new insights into the introduction of flexo-phototronic effects in non-polar materials, but also sheds light on the use of material inhomogeneity for acquiring multifunctionality.

AB - With exciting functionality, topological defects in ferroic system have attracted significant attention. Under proper design, the emergence of polar domain walls in non-polar ferroelastics enables a flexo-phototronic effect. In this study, we revealed ferroelastic twin texture with localized flexoelectric effect in centrosymmetric epitaxial BiVO4 film. Supported by photodeposition and localized photocurrent analysis, we found the flexoelectric effect confined at domain wall area facilitates the photocarrier transport and the flexo-phototronic mechanism was further supported by dye-degradation and generation of reactive radicals. This work not only provides new insights into the introduction of flexo-phototronic effects in non-polar materials, but also sheds light on the use of material inhomogeneity for acquiring multifunctionality.

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VL - 312

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

M1 - 121367

ER -

Flexo-phototronic effect in centro-symmetric BiVO₄ epitaxial films

Abstract

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