About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
Crystallization Control and Green Fabrication Pathways for Next-generation Perovskite Solar Cells |
| Author(s) |
Cyril Chu Fubin Kumachang, Julie Tring, Brittlee Reese, Mac Fitzgerald, Tawanda J. Zimudzi, Ivy M. Asuo, Nutifafa Y. Doumon |
| On-Site Speaker (Planned) |
Cyril Chu Fubin Kumachang |
| Abstract Scope |
Metal halide perovskite solar cells (PSCs) are leading candidates for next-generation photovoltaics, but scalability and environmental concerns remain key obstacles. We present two complementary strategies focused on sustainable processing and crystallization control in both ambient and inert environments. First, eco-friendly semitransparent PSCs were fabricated under ambient air using dimethyl sulfoxide (DMSO) as a standalone solvent with isopropanol (IPA) and ethanol as anti-solvents, replacing toxic N,N-dimethylformamide (DMF). While DMSO-only-IPA-treated devices exhibited lower PCEs (14.7% vs. 21.3%), they achieved superior light utilization efficiencies (LUE up to 4.0%), promising for agrivoltaics and building integration. Separately, nitrogen-assisted crystallization inside a glovebox eliminated volatile anti-solvents entirely. By tuning nitrogen pressure (10–15 psi) and exposure time, we precisely controlled nucleation and grain growth, producing uniform films with enhanced crystallinity. Surface passivation with 2D perovskite layers and PbCl₂ tuning further minimized non-radiative recombination and stabilized device performance. Together, these routes demonstrate scalable, environmentally conscious, and high-efficiency PSCs. |