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*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

摘要

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.

原文英語
文章編號121367
期刊Applied Catalysis B: Environmental
312
DOIs
出版狀態已發佈 - 2022 9月 5

ASJC Scopus subject areas

  • 催化
  • 環境科學 (全部)
  • 製程化學與技術

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