Enhanced piezoelectricity and energy storage performances of Fe-doped BNT–BKT–ST thin films |
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| Authors: | Shuanghao Wu Pan Chen Jiwei Zhai Bo Shen Peng Li Feng Li |
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| Affiliation: | Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China |
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| Abstract: | Fe-doping is an effective way to improve physical performances of piezoelectric and ferroelectric materials. Under such circumstances, x mol% (x?=?0.0, 1.0, 1.5, 2.5) Fe-doped 0.72Bi0.5Na0.5TiO3–0.18Bi0.5K0.5TiO3–0.10SrTiO3 (BNT–BKT–ST–xFe) thin films were prepared by sol-gel method and the relationships between the content of Fe and electromechanical properties of the films were studied. The BNT–BKT–ST–1.0Fe thin films exhibit the best electromechanical properties, whose Smax/Emax, Wrec, η, Pmax, Prem and εr of are 68.00?pm/V, 20.34?J/cm3, 65.17%, 71.5?μC/cm2, 14.8?μC/cm2, 868 respectively. These results indicate that BNT–BKT–ST–1.0Fe thin films are promising for applications for advanced piezoelectric materials and capacitors with high energy-storage density. |
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| Keywords: | Piezoelectricity Energy storage performances BNT–BKT–ST thin films Fe-doping Metal organic decomposition |
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