Anomalous Photovoltaic Effect in Centrosymmetric Ferroelastic BiVO4

doi:10.1002/adma.201801619

	Anomalous Photovoltaic Effect in Centrosymmetric Ferroelastic BiVO4
	Liu, Xitao 1; Zhang, Faqiang 2; Long, Peiqing 1; Lu, Teng 3; Zeng, Huarong 2; Liu, Yun 3; Withers, Ray L.3; Li, Yongxiang 2; Yi, Zhiguo 1,4,5
刊名	Advanced Materials
	2018
ISSN号	09359648
DOI	10.1002/adma.201801619
英文摘要	The anomolous photovoltaic (APV) effect is an intriguing phenomenon and rarely observed in bulk materials that structurally have an inversion symmetry. Here, the discovery of such an APV effect in a centrosymmetric vanadate, BiVO4, where noticeable above-bandgap photovoltage and a steady-state photocurrent are observed in both ceramics and single crystals even when illuminated under visible light, is reported. Moreover, the photovoltaic voltage can be reversed by the stress modulation, and a sine-function relationship between the photovoltage and stress directional angle is derived. Microstructure and strain-field analysis reveal localized asymmetries that are caused by strain fluctuations in bulk centrosymmetric BiVO4. On the basis of the experimental results, a flexoelectric coupling via a strain-induced local polarization mechanism is suggested to account for the APV effect observed. This work not only allows new applications for BiVO4 in optoelectronic devices but also deepens insights into the mechanisms underlying the APV effect. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
出版者	Wiley-VCH Verlag
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25188]
专题	中国科学院上海硅酸盐研究所
作者单位	1.CAS Key Laboratory of Design and Assembly of Functional Nanostructures & Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou; 350002, China; 2.CAS Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China; 3.Research School of Chemistry, The Australian National University, Canberra; ACT; 2601, Australia; 4.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China; 5.University of Chinese Academy of Sciences, Beijing; 100049, China
推荐引用方式 GB/T 7714	Liu, Xitao,Zhang, Faqiang,Long, Peiqing,et al. Anomalous Photovoltaic Effect in Centrosymmetric Ferroelastic BiVO4[J]. Advanced Materials,2018.
APA	Liu, Xitao.,Zhang, Faqiang.,Long, Peiqing.,Lu, Teng.,Zeng, Huarong.,...&Yi, Zhiguo.(2018).Anomalous Photovoltaic Effect in Centrosymmetric Ferroelastic BiVO4.Advanced Materials.
MLA	Liu, Xitao,et al."Anomalous Photovoltaic Effect in Centrosymmetric Ferroelastic BiVO4".Advanced Materials (2018).