About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
Silver Bismuth Iodide (Ag2BiI5) Screen-Printed Perovskite Carbon Solar Cells |
| Author(s) |
Varshika Puthan Veedu Sasidharan, Wu Qinjie, Priyanka Kajal, Paul Erinjeri Jogi, Darrell Jun Jie Tay, Nripan Mathews |
| On-Site Speaker (Planned) |
Varshika Puthan Veedu Sasidharan |
| Abstract Scope |
This work presents an innovative approach for fabricating lead-free carbon-based perovskite solar cells using silver bismuth iodide (Ag₂BiI₅) as the light absorber. A screen-printing method was employed to deposit compact TiO₂, mesoporous TiO₂, ZrO₂, and carbon electrodes, ensuring scalability and uniform layer formation. Incorporation of 5-ammonium valeric acid iodide (5-AVAI) into the perovskite precursor significantly enhanced device performance. The optimized solar cells achieved a power conversion efficiency (PCE) of 4.26%, with an open-circuit voltage (Voc) of 0.55 V, short-circuit current density (Jsc) of 16.5 mA/cm², and fill factor (FF) of 47.4%. Structural and optical analyses, including X-ray diffraction (XRD) and UV-Vis spectroscopy, confirmed high crystallinity and favorable optical properties. An optimized 5-AVAI concentration of 50 mg was critical for performance improvement over other concentrations. A preliminary module was also fabricated, demonstrating the technique’s potential for scalable and sustainable solar energy applications. |