Laser-Printed Perovskites for Stable Optoelectronic Devices under Radiation, Thermal and Humidity Stress

Metal halide perovskites offer a unique combination of optoelectronic properties which could transform the landscape of modern optoelectronics, but their instability and reliance on hazardous solvents hinder their widespread use. We introduce a solvent-free laser printing technique for depositing perovskite films with exceptional stability under harsh conditions, including radiation exceeding 200 Gy, blue laser illumination, 90% relative humidity, and thermal stress up to 80°C for over 300 minutes in air. The laser-printed films outperform conventionally processed films in terms of stability, which we attributed to the unique film formation mechanism and defect-tolerant microstructure of the laser printing process. The exceptional resilience of these films under harsh conditions, particularly high radiation doses, suggests their potential for applications in space exploration and satellite technology. Additionally, the elimination of hazardous solvents makes laser printing an eco-conscious fabrication method suitable for scalable production and widespread adoption of perovskite technologies.