| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Printed Electronics and Additive Manufacturing: Functional Materials, Processing Techniques, and Emerging Applications
|
| Presentation Title |
Wet Chemical Synthesis of Patterned Bismuth Ferrite Thin Films by Direct Writing (Printing) and Characterization Using Printed Electrodes |
| Author(s) |
Sanjeev Patil, Parasuraman Swaminathan |
| On-Site Speaker (Planned) |
Sanjeev Patil |
| Abstract Scope |
BiFeO3 is a realistic candidate to replace PZT in piezoelectric applications owing to lead toxicity, safety, and disposal hazards.
In this work, BFO coatings were deposited on FTO, ITO, and quartz substrates via direct writing using a customized printer with optimized printing and extrusion parameters. A precursor-based ink was developed that remains stable for upto 9 months without aggregation or phase separation. BFO phase purity was ascertained by XRD, SEM-EDS, Raman spectroscopy, while ink characteristics were optimized for printability using contact-angle (wettability) and viscosity tests. Optical profilometry confirmed film thickness, while UV-vis spectroscopy indicated optical bandgap of 2.6-2.9 eV.
Traditional top-bottom electrodes deposited by sputtering necessitated high vacuum, mask, and expensive pure gold targets with expensive material loss. This work optimized extrusion and nozzle parameters in direct writing to print silver nanoparticles as square/circular electrodes to get Ag/BFO/ITO, Ag/BFO/FTO, and Ag/BFO/quartz heterostructures to frugally obtain contacts required for electrical characterization. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electronic Materials, Energy Conversion and Storage, Characterization |