The effect of grain boundary on the visible light absorption of BaTi1-x[Ni1/2Nb1/2](x)O3-delta ferroelectric ceramics

doi:10.1111/jace.16643

	The effect of grain boundary on the visible light absorption of BaTi1-x[Ni1/2Nb1/2](x)O3-delta ferroelectric ceramics
	Lou, Qiwei; Zeng, Jiangtao; Man, Zhenyong; Zheng, Liaoying; Park, Chulhong; Kassiba, Abdelhadi; Liu, Yun; Chen, Xiaoming; Li, Guorong
刊名	JOURNAL OF THE AMERICAN CERAMIC SOCIETY
	2019-12-01
卷号	102 期号:12 页码:7405
关键词	absorption defects ferroelectric materials
ISSN号	0002-7820
DOI	10.1111/jace.16643
文献子类	Article
英文摘要	(Ni2+, Nb5+) co-doped BaTiO3 ceramics BaTi1-x(Ni1/2Nb1/2)(x)O3-delta (BTNN-100x) are prepared by a solid-state reaction method, and their electrical and light absorption properties are investigated. The results show that BTNN-100x can generate oxygen vacancies which pin the domain walls. BTNN-100x bulk ceramics show strong visible light absorption. However, the phenomenon of visible light absorption disappear for BTNN-100x ceramic powders, and the band gap of doped ceramic powders are nearly unchanged. The experiments demonstrate that stress and density have little effect on the band gap. And the grain boundary shows stronger cathodoluminescence (CL) emission. Actually, oxygen vacancies can be enriched at grain boundaries, and defect [V-o-Ni-Ti-V-o] complex structures can be form and give rise to the visible light absorption as demonstrated by First-principles calculations. Thus, the engineering design of ferroelectric grain boundaries may pave the way for the application of coupled ferroelectric-photovoltaic processes.
WOS研究方向	Materials Science
语种	英语
出版者	WILEY
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/26717]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Lou, Qiwei,Zeng, Jiangtao,Man, Zhenyong,et al. The effect of grain boundary on the visible light absorption of BaTi1-x[Ni1/2Nb1/2](x)O3-delta ferroelectric ceramics[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2019,102(12):7405.
APA	Lou, Qiwei.,Zeng, Jiangtao.,Man, Zhenyong.,Zheng, Liaoying.,Park, Chulhong.,...&Li, Guorong.(2019).The effect of grain boundary on the visible light absorption of BaTi1-x[Ni1/2Nb1/2](x)O3-delta ferroelectric ceramics.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,102(12),7405.
MLA	Lou, Qiwei,et al."The effect of grain boundary on the visible light absorption of BaTi1-x[Ni1/2Nb1/2](x)O3-delta ferroelectric ceramics".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 102.12(2019):7405.