The colloquium will be streamed online.
Prof. Monica Morales-Masis, University of Twente, MESA+ Institute for Nanotechnology
Invited by Dr. Erkan Aydin and Prof. Frédéric Laquai
Vapor-phase deposition offers a dry, controllable route for fabricating metal halide perovskite (MHP) thin films, enabling thickness control, conformal coating, and straightforward patterning. Yet, stoichiometry control is challenging due to the distinct volatilities of the MHP precursors. Co-evaporation of MHP overcomes this challenge with the use of multiple independently controlled sources, but single-source vapor deposition methods remain challenging. Within the family of physical vapor deposition (PVD) techniques, pulsed laser deposition (PLD) offers unique advantages for the synthesis of MHP thin films from a single source target. By utilizing laser-induced ablation, PLD enables transfer of material from a solid target through both thermal and non-thermal mechanisms, allowing for exceptional compositional control, and simplifying the fabrication of multicomponent films. Our recent work highlights PLD's capability to produce stoichiometrically precise MHP layers, from 2D to 3D MHP motifs, and the successful integration of MAxFA1−xPbI₃ layers into solar cells with power conversion efficiencies exceeding 19%. Additionally, we show that fine control of PLD conditions enables room-temperature epitaxial growth on lattice-matched substrates, offering a pathway for strain engineering and advanced optoelectronic device design. This presentation will detail these advances, address remaining challenges, and discuss the potential of laser deposition as a scalable, single-source deposition method for next-generation perovskite-based technologies.
References
[1] https://doi.org/10.1021/acsenergylett.4c01466
[2] https://doi.org/10.1016/j.joule.2024.09.001
[3] https://doi.org/10.1038/s44160-024-00717-z
[4] https://doi.org/10.1038/s41699-025-00571-3