Influence of defects on the photocatalytic behavior of La3+ ions doped SrBi2Nb2O9 ferroelectric materials

doi:10.1063/1.5086014

	Influence of defects on the photocatalytic behavior of La3+ ions doped SrBi2Nb2O9 ferroelectric materials
	Lou, Qiwei; Zeng, Jiangtao; Zheng, Liaoying; Man, Zhenyong; Wang, Wenzhong; Kassiba, Abdelhadi; Park, Chul Hong; Politova, E. D.; Li, Guorong
刊名	JOURNAL OF APPLIED PHYSICS
	2019-04-21
卷号	125 期号:15
ISSN号	0021-8979
DOI	10.1063/1.5086014
文献子类	Article
英文摘要	SrBi2-xLaxNb2O9 ferroelectric powders and ceramics were synthesized by the solid state reaction method, and the effect of La3+ ions doping on the photocatalytic efficiency was investigated. For the low doping rate x (x <= 0.02), the leakage current decreases, while the photocurrent and the photocatalytic efficiency increase with x. This is due to the reduction of O-vacancy and the increased spontaneous polarization. For the higher doping rate x (x > 0.02), the leakage current increases with x due to the formation of donorlike La-Sr(+) state, while the photocurrent and the photocatalytic efficiency decrease with x due to the increased scattering rate by La-Sr(+), although the spontaneous polarization increases continuously with the La3+ ions doping. These effects indicate that the defects such as La-Sr(+) impurity states play a more important role for the carrier transport and the photocatalysis. To our best knowledge, it is the first time that the influence of defects on the photocatalytic efficiency of ferroelectric materials is elucidated, and the results of this paper shed light on the search for new ferroelectrics with high photocatalytic performance. Published under license by AIP Publishing.
WOS研究方向	Physics
语种	英语
出版者	AMER INST PHYSICS
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27169]
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,Zheng, Liaoying,et al. Influence of defects on the photocatalytic behavior of La3+ ions doped SrBi2Nb2O9 ferroelectric materials[J]. JOURNAL OF APPLIED PHYSICS,2019,125(15).
APA	Lou, Qiwei.,Zeng, Jiangtao.,Zheng, Liaoying.,Man, Zhenyong.,Wang, Wenzhong.,...&Li, Guorong.(2019).Influence of defects on the photocatalytic behavior of La3+ ions doped SrBi2Nb2O9 ferroelectric materials.JOURNAL OF APPLIED PHYSICS,125(15).
MLA	Lou, Qiwei,et al."Influence of defects on the photocatalytic behavior of La3+ ions doped SrBi2Nb2O9 ferroelectric materials".JOURNAL OF APPLIED PHYSICS 125.15(2019).