Ferroelectric and photoluminescent properties of Eu3+-doped Bi4Ti3O12 films prepared via the spin-coating method
| Autor: | Zheng Zhao, Min Shi, Jian Fu, Zhuolin Si, Enyang Men, Kunzhuang Hu, Yudong Xu, Li Guo, Ruzhong Zuo |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Spin coating Photoluminescence Materials science Doping Analytical chemistry Condensed Matter Physics 01 natural sciences Emission intensity Ferroelectricity Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Lattice (order) 0103 physical sciences Leakage current density Electrical and Electronic Engineering |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 31:6339-6348 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-020-03190-4 |
| Popis: | In this study, the films of Bi4−xEuxTi3O12 (x = 0, 0.2, 0.4, 0.6, 0.8) were prepared on substrates (Pt(111)/Ti/SiO2/Si(100)) by the spin-coating method. The results indicate that the films of Bi4−xEuxTi3O12 annealed at 700 °C consist of Bi4Ti3O12 and Pt from the substrates. This indicates that Eu3+ has dissolved into the lattice of Bi4Ti3O12. The doping of Eu3+ to the films of Bi4Ti3O12 enhances ferroelectric properties as well as photoluminescent properties. The films of Bi4−xEuxTi3O12 show two orange emission perks at 590 nm and 595 nm, and a red emission at 613 nm. These three peaks are ascribed to 5D0 → 7F0, 5D0 → 7F1, and 5D0 → 7F2, respectively. The bandgaps of the films of Bi4−xEuxTi3O12 range from 3.07 eV to 2.86 eV with the increase of the doping concentration of Eu3+. Bi3.4Eu0.6Ti3O12 film possesses maximal remanent polarization, minimal leakage current density, and greatest emission intensity. |
| Databáze: | OpenAIRE |
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