Significant photovoltaic enhancement in La-doped BiFeO3 achieved by engineering crystallographic facet arrays

doi:10.1016/j.scriptamat.2022.114961

	Significant photovoltaic enhancement in La-doped BiFeO3 achieved by engineering crystallographic facet arrays
	Liu, Nan 1,2; Cao, Yi 1,2; Tang, Yun-Long 1; Zhu, Yin-Lian 1,3; Wang, Yu-Jia 1; Liu, Jia-Qi 1,2; Zhang, Heng 1,2; Li, Chang-Ji 1; Zhang, Si-Rui 4; Yang, Bing 1
	2022-12-01
发表期刊	Scripta Materialia
ISSN	1359-6462
卷号	221
摘要	Engineering regular surface crystallographic facet arrays on a large scale is useful for tuning and optimizing photophysical properties of optoelectronic materials. Herein, we achieve textured Bi0.5La0.5FeO3 (BLFO) film surfaces displaying nanosquare arrays composed of {001} and {110} crystallographic facets, via an effective and controllable thermal etching method. Substantially enhanced photocurrent signals from these faceted samples were confirmed via laser-assisted conductive atomic force microscopy at the nanometer scale, where tens of times increment in photo-generated electric field and short circuit current density were further identified. The electronic structures of the {001} and {110} surfaces were compared by ab-initio calculations, and the conduction band minimum of the latter one shows highly dispersive character thus prompted carrier transport can be anticipated. This thermal etching method provides an efficient strategy for fabricating patterned perovskite films with highly active crystallographic facet arrays and thus will inspire new technological possibilities for high-performance photovoltaic devices. © 2022
关键词	Atomic force microscopy Bismuth compounds Calculations Electric fields Electronic structure Etching High resolution transmission electron microscopy Image enhancement Lanthanum compounds Optoelectronic devices Perovskite Photovoltaic effects Scanning electron microscopy Crystallographic facets Etching method Large-scales Optoelectronic materials Perovskite oxides Photophysical properties Photovoltaics Regular surfaces Scanning-probe microscopy Thermal etching
DOI	10.1016/j.scriptamat.2022.114961
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000930802300002
出版者	Acta Materialia Inc
EI入藏号	20223312582894
EI主题词	Iron compounds
EI分类号	482.2 Minerals ; 701.1 Electricity: Basic Concepts and Phenomena ; 741.3 Optical Devices and Systems ; 802.2 Chemical Reactions ; 921 Mathematics
来源库	WOS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/160225
专题	材料科学与工程学院_特聘教授组
作者单位	1.Shenyang National Laboratory for Materials Science and Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, Shenyang; 110016, China; 2.School of Materials Science and Engineering, University of Science and Technology of China, Wenhua Road 72, Shenyang; 110016, China; 3.Bay Area Center for Electron Microscopy, Songshan Lake Materials Laboratory, Dongguan; 523808, China; 4.School of Advanced Materials and Nanotechnology, Xidian University, Xi'an; 710126, China; 5.State Key Lab of Advanced Processing and Recycling on Non-ferrous Metals, Lanzhou University of Technology, Langongping Road 287, Lanzhou; 730050, China
第一作者单位	材料科学与工程学院
推荐引用方式 GB/T 7714	Liu, Nan,Cao, Yi,Tang, Yun-Long,et al. Significant photovoltaic enhancement in La-doped BiFeO3 achieved by engineering crystallographic facet arrays[J]. Scripta Materialia,2022,221.
APA	Liu, Nan.,Cao, Yi.,Tang, Yun-Long.,Zhu, Yin-Lian.,Wang, Yu-Jia.,...&Ma, Xiu-Liang.(2022).Significant photovoltaic enhancement in La-doped BiFeO3 achieved by engineering crystallographic facet arrays.Scripta Materialia,221.
MLA	Liu, Nan,et al."Significant photovoltaic enhancement in La-doped BiFeO3 achieved by engineering crystallographic facet arrays".Scripta Materialia 221(2022).