| Full text | |
| Author(s): |
Total Authors: 3
|
| Affiliation: | [1] Univ Fed Sao Carlos, Phys Dept, Sao Carlos - Brazil
[2] Univ Hyderabad, Sch Phys, Hyderabad - India
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | Ferroelectrics; v. 570, n. 1, p. 153-161, JAN 2 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
A novel lead-free Ba(1-x)(La,Na)(x)TiO3 (BLNT), (0 <= x <= 0.08) ferroelectric ceramic with enhanced energy storage density was fabricated by the conventional solid-state method. With an increase in La3+/Na+ content, the energy storage density, efficiency and power density were increased. The samples with (x = 0.08) show recoverable energy storage of (1.07 J/cm3), 3 times higher than that of pure BaTiO3 ceramics, energy storage efficiency of (87.6%) and power density of 0.314 MW/cm(3), 17 times greater than that of pure BaTiO3 ceramics. Comparison with other lead-free ferroelectric ceramics confirmed the superiority potential of (BLNT-0.08) ceramics for the design of ceramics capacitors for energy storage applications. The effect of La3+/Na+ contents on the optical properties of BaTiO3 ceramics was studied via UV spectroscopy. The results revealed that the introduction of structure disorder by means of A-site vacancies leading to the creation of shallow defects resulting in narrowing the bandgap energy. This work may provide a simple and powerful method to develop inexpensive energy storage and photovoltaic devices based on ferroelectric ceramics. (AU) | |
| FAPESP's process: | 19/03110-8 - Synthesis and photovoltaic characterization of thin films based on ferroelectric and multiferroic perovskite for solar cells application |
| Grantee: | Mahmoud Saleh Mohammed Alkathy |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |