Crystal Structure Engineered Non-toxic Bi0.5Na0.5TiO3 Based Thin Films-Fabrication Process, Enhanced Electrical Performance, Challenges and Recent Reports

• Published in: Journal of inorganic and organometallic polymers and materials Vol. 33; no. 10; pp. 3013 - 3026
• Main Author: Supriya, Subramani
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.10.2023; Springer Nature B.V
• Subjects: Barium titanates; Bismuth titanate; Chemistry; Chemistry and Materials Science; Crystal structure; Electrical properties; Electronic components; Ferroelectricity; High temperature; Inorganic Chemistry; Melting points; Organic Chemistry; Perovskites; Piezoelectricity; Polymer Sciences; Pulsed laser deposition; Pulsed lasers; Review; Sol-gel processes; Spin coating; Thin films; Thin films; Perovskite; BNT; Dielectric; Bismuth oxide; Piezoelectric
• ISSN: 1574-1443; 1574-1451
• DOI: 10.1007/s10904-023-02765-y

Application of functional Bi 0.5 Na 0.5 TiO 3 (BNT) based hybrid thin films to flexible electronic devices is unavoidable for future technologies. The challenges involve the discrepancy between the fabrications of high-temperature thin films with a low melting point. This review reveals the processing methods to obtain good crystalline BNT-based thin films with enhanced electrical properties and applications. The thin film preparation methods like sol–gel spin coating, pulsed laser deposition, and chemical solution depositions were discussed in detail. Also, various crystal structures of BNT thin films with other dopants were elaborated. The dielectric, piezoelectric, and ferroelectric behaviors of recent materials were discussed. BNT thin films with a combination of Bi 0.5 K 0.5 TiO 3 , BaTiO 3, and SrTiO 3 were described on behalf of these properties. The fundamental principles of perovskite BNT-based thin films were discussed, and the understanding of various doped materials with crystal structure formation was first reviewed. The importance and consideration of the BNT-based thin films with excellent electrical properties for future developments were highlighted. At last, challenges and future perspectives in these materials were discussed for further development of electronic components. Graphical Abstract Pyrochlore Bi 2 Ti 2 O 7 in Bi 0.5 Na 0.5 TiO 3 thin films