PV-Lab wins international PV stability contest in perovskite cells

Mostafa Othman achieved benchmark stability records for perovskite solar cells of different sizes and configurations. In particular, he demonstrated stability records for small- and larger-area devices at elevated temperatures (85°C) and continuous illumination under different ageing conditions in ambient (ISOS-V-2, T95>>1500h, ISOS-L-3, T95>>2000h) and outdoors (ISOS-O-2, PR stayed ~1 after 9 months), including the most stable laser-scribed single-junction perovskite minimodules to-date (at 75°C) in both accelerated ageing and outdoor testing conditions. These results were independently validated at multiple research institutions and were recently benchmarked at the ISOS-16 conference in Belgium, recognized for the best international PV stability contest (ISOS 2025). This work has been conducted under the supervision of Dr Aïcha Hessler-Wyser, Dr Christian M. Wolff and Prof. Christophe Ballif.