Metal-halide perovskites (MHP) are highly promising optoelectronic materials due to their exceptional properties and versatile fabrication methods [1]. These materials are crucial for solar cells and optoelectronics devices to quantum emitters.
Thermal evaporation has emerged as a pivotal method to enable precise control over film thickness, composition tuning, stress-free deposition, surface modification capabilities, and large-area [2] devices—key factors in the advancement of perovskite optoelectronics.
In this talk I will present how overcoming the challenges of scalability and reproducibility in perovskite solar cell (PSC) production, critical for their sustanaible viability. We have demonstrated the possibility of achieving a sixfold increase in speed while maintaining film quality and high-power conversion efficiencies. This accelerated co-evaporation process demonstrates the potential for large-scale, cost-effective PSC production without needing post-annealing, further simplifying the manufacturing process [3].
Moreover, leveraging on the possibility of fabricating high-quality films with high thickness control by thermal evaporation we have explored the promising field of thermally evaporated perovskite-based Multiple Quantum Wells (MQWs) [4]. MQWs structures can enhance the optoelectronic properties of nanoscale thin films, through control over electronic energy levels and quantum mechanical phenomena, and opening up avenues for unconventional optoelectronic functionalities.
We demonstrated how both thermally evaporated MAPbI3-based MQWs offer significant advancements in light-emitting and photodetection technologies, expanding their sensitivity into the near-infrared range and enhancing photoluminescence and charge separation efficiency.[5].
These recent works not only address critical challenges in scaling perovskite solar cell production but also open new avenues for optoelectronic device design, highlighting the versatility and promise of thermally evaporated perovskite materials for next-generation energy solutions.

References
1) Min, H., et al., Nature, 2021. 598, 444.; Yoo, J.J., et al., Nature, 2021. 590 587.
2) J. Li et al., Joule 2020, 4, 1035; H.A. Dewi et al., Adv. Funct. Mater. 2021, 11, 2100557; J. Li et al., Adv. Funct. Mater. 2021, 11, 2103252;
3) Dewi et al. ACS Energy Lett. 2024, 9, 4319−4322
4) Advanced Materials 2021, 33, 2005166; L. White et al. ACS Energy Lett. 2024, 9, 83;
5) L. White, ACS Energy Lett. 2024, 9, 4450.