Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8203432 | Physics Letters A | 2018 | 19 Pages |
Abstract
Highly (100)-oriented (Pb1âxâyLaxCay)Ti1âx/4O3 (x=0.15, y=0.05; x=0.1, y=0.1; x=0.05, y=0.15) thin films were deposited on Pt/Ti/SiO2/Si substrates at a low temperature of 450â°C via a sol-gel route. It was found that all the (Pb1âxâyLaxCay)Ti1âx/4O3 thin films could be completely crystallized and the content of La/Ca showed a significant effect on the electrical properties of films. Among the three films, the (Pb1âxâyLaxCay)Ti1âx/4O3 (x=0.1, y=0.1) thin film exhibited the enhanced overall electrical properties, such as a low dielectric loss (tanâ¡Î´<0.08) and leakage current (Jâ¼4.6Ã10â5 A/cm2), a high recoverable energy density (Wre â¼ 15 J/cm3), as well as a large pyroelectric coefficient (p â¼ 190 μC/m2K) and figure of merit (Fdâ²â¼77μC/m2K). The findings suggest that the fabricated thin films with a good (100) orientation can be an attractive candidate for applications in Si-based energy storage and pyroelectric devices.
Keywords
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Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Hanfei Zhu, Hongfang Ma, Yuyao Zhao,