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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
2019-04-21
Source PublicationJOURNAL OF APPLIED PHYSICS
ISSN0021-8979
Volume125Issue:15
SubtypeArticle
AbstractSrBi2-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.
DOI10.1063/1.5086014
Language英语
WOS Research AreaPhysics
PublisherAMER INST PHYSICS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27169
Collection中国科学院上海硅酸盐研究所
Recommended Citation
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).
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