| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Late News Poster Session
|
| Presentation Title |
D-44: Coadditive Engineering for High Open Circuit Voltage Nearly 1V in Tin-Based Perovskite Solar Cells |
| Author(s) |
Ashraful Islam, Emrul Md Kayesh |
| On-Site Speaker (Planned) |
Ashraful Islam |
| Abstract Scope |
Currently, Sn-based perovskite materials are utilized as the highest-performing lead-free perovskite solar cells (PSC). The crystallization rate of FASnI3 precursor solution is very fast to form uniform and optimum grains. On the other hand, the FASnI3 has a facial tendency to oxidation from Sn2+ to Sn4+, resulting in loss of suitable semiconducting properties. To tackle both problems, we have performed coadditive engineering with two novel additives, one to control the crystallization rate and the other to retard the oxidation of FASnI3. We obtained smooth crystal grain with nearly zero Sn4+ content. The dark current density reached to a record of 3.5 X 10-16 mA/cm2, and the open circuit voltage at 0.99 V close to the theoretical value. The champion device exhibits a power conversion efficiency of 13.5% with high stability. This works highlights the deposition control for Sn-PSC and brings the nontoxic Sn-PSC one step closer to the application |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Energy Conversion and Storage, Electronic Materials, Nanotechnology |