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

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	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
	2019-12-01
Source Publication	JOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN	0002-7820
Volume	102 Issue:12 Pages:7405
Subtype	Article
Abstract	(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.
Keyword	absorption defects ferroelectric materials
DOI	10.1111/jace.16643
Language	英语
WOS Research Area	Materials Science
Publisher	WILEY
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/26717
Collection	中国科学院上海硅酸盐研究所
Recommended Citation 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.

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