Excellent Energy Storage and Photovoltaic Performances in Bi<sub>0.45</sub>Na<sub>0.45</sub>Ba<sub>0.1</sub>TiO<sub>3</sub>-Based Lead-Free Ferroelectricity Thin Film
Jianhua Wu,
Tiantian Zhang,
Xing Gao,
Lei Ning,
Yanhua Hu,
Xiaojie Lou,
Yunying Liu,
Ningning Sun,
Yong Li
Affiliations
Jianhua Wu
Inner Mongolia Key Laboratory of Ferroelectric-Related New Energy Materials and Devices, School of Materials Science and Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China
Tiantian Zhang
Inner Mongolia Key Laboratory of Ferroelectric-Related New Energy Materials and Devices, School of Materials Science and Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China
Xing Gao
Inner Mongolia Key Laboratory of Ferroelectric-Related New Energy Materials and Devices, School of Materials Science and Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China
Lei Ning
Inner Mongolia Key Laboratory of Ferroelectric-Related New Energy Materials and Devices, School of Materials Science and Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China
Yanhua Hu
Department of Chemical Engineering, Ordos Institute of Technology, Erdos 017000, China
Xiaojie Lou
State Key Laboratory for Mechanical Behavior of Materials, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China
Yunying Liu
Inner Mongolia Key Laboratory of Ferroelectric-Related New Energy Materials and Devices, School of Materials Science and Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China
Ningning Sun
Inner Mongolia Key Laboratory of Ferroelectric-Related New Energy Materials and Devices, School of Materials Science and Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China
Yong Li
Inner Mongolia Key Laboratory of Ferroelectric-Related New Energy Materials and Devices, School of Materials Science and Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China
Inorganic dielectric films have attracted extensive attention in the field of microelectronic and electrical devices because of their wide operating temperature range, small size, and easy integration. Here, we designed and prepared eco-friendly (1-x)Bi0.45Na0.45Ba0.1TiO3-xBi(Mg1/3Nb2/3)O3 multifunctional ferroelectric thin films for energy storage and photovoltaic. The results show that Bi(Mg1/3Nb2/3)O3 can effectively improve the energy storage performance. At x = 0.05, the energy storage density and efficiency are as high as 73.1 J/cm3 and 86.2%, respectively, and can operate stably in a wide temperature range. The breakdown field strength of the thin films increased significantly, and the analysis showed that the addition of Bi(Mg1/3Nb2/3)O3 caused a change in the internal conduction mechanism. At the same time, the generation of polar nanoregions increases the relaxation characteristics, thus improving the energy storage properties. In addition, the thin film material also has excellent ferroelectric photovoltaic properties. This work represents a new design paradigm that can serve as an effective strategy for developing advanced multi-functional materials.
