Issue 40, 2017
From the journal:

Journal of Materials Chemistry C

Photovoltaic enhancement by Au surface-plasmon effect for La doped BiFeO3 films

F. Z. Li,a   H. W. Zheng, ORCID logo *a   M. S. Zhu,a   X. A. Zhang,*a   G. L. Yuan,b   Z. S. Xie,b   X. H. Li,c   G. T. Yue ORCID logo *a  and  W. F. Zhanga  

* Corresponding authors

a Henan Key Laboratory of Photovoltaic Materials, School of Physics and Electronics, Henan University, Kaifeng 475004, China
E-mail: zhenghaiw@ustc.edu, xazhang@henu.edu.cn, yuegentian@126.com
Fax: +86-371-23881602
Tel: +86-371-23881602

b School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

c Institute of Solid State Physics, Key Lab of Materials Physics, CAS, Hefei 230031, China

Abstract

Herein, the photovoltaic (PV) effect of ferroelectric Bi0.85La0.15FeO3 (BLFO) films fabricated through a sol–gel method is investigated. The ferroelectric properties of the BLFO films improve compared to the undoped BiFeO3 films. The application of Au nanoparticles (AuNPs) increases the open circuit voltage (VOC) and short circuit current density (JSC) from 0.2 V to 0.3 V and 5.3 μA cm−2 to 18.5 μA cm−2, respectively, which could be attributed to Au surface-plasmon effects. The PV output for the BLFO film can be modulated after applying external poling voltages. Considering the ferroelectric polarization and plasmonic effects, a plausible theoretical model is constructed to depict the physical mechanism of PV enhancement for the BLFO film in detail. This work not only presents a new approach to improve the PV effect of ferroelectric films but also provides important insights into the PV mechanism of ferroelectric films.

Graphical abstract: Photovoltaic enhancement by Au surface-plasmon effect for La doped BiFeO3 films

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Article information

DOI
https://doi.org/10.1039/C7TC03371K
Article type
Paper
Submitted
27 Jul 2017
Accepted
22 Sep 2017
First published
22 Sep 2017

J. Mater. Chem. C, 2017,5, 10615-10623

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Photovoltaic enhancement by Au surface-plasmon effect for La doped BiFeO3 films

F. Z. Li, H. W. Zheng, M. S. Zhu, X. A. Zhang, G. L. Yuan, Z. S. Xie, X. H. Li, G. T. Yue and W. F. Zhang, J. Mater. Chem. C, 2017, 5, 10615 DOI: 10.1039/C7TC03371K

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