Publication date: 17th February 2025
Metal-halide perovskites (MHPs) have emerged as a transformative class of materials in optoelectronics, celebrated for their remarkable properties and flexible fabrication methods. These materials are central to the development of high-performance solar cells, advanced optoelectronic devices, and cutting-edge quantum emitters. Among the various fabrication techniques, thermal evaporation is particularly advantageous, providing exceptional control over film thickness, stress-free deposition, composition fine-tuning, surface modification, and scalability—qualities that are essential for producing large-area devices and enabling sophisticated device customization【1, 2】.
In my recent work, I have focused on overcoming the scalability and reproducibility challenges in perovskite solar cell (PSC) manufacturing, which are essential for their commercialization. A major achievement has been the sixfold acceleration of deposition rates through the optimization of the co-evaporation process【3】. This method allows for the production of high-quality films with outstanding power conversion efficiency (PCE), eliminating the need for post-annealing treatments, and simplifying the manufacturing process, thereby improving cost-efficiency for large-scale PSC production.
Furthermore, our research has explored the use of thermally evaporated perovskite-based Multiple Quantum Wells (MQWs), which utilize quantum mechanical effects to enhance optoelectronic properties【4】. We have demonstrated that MAPbI3-based MQWs offer significant improvements in photoluminescence, charge separation, and near-infrared photodetection【5】. These findings are pioneering in advancing light-emitting devices and photodetectors, contributing to the next generation of optoelectronic technologies.
This work not only addresses key obstacles in scaling PSC production but also highlights the versatility and transformative potential of thermal evaporation in rethinking device design. These advancements position thermally evaporated perovskites as a crucial technology for the future of sustainable energy and next-generation optoelectronic applications.
References
Min, H., et al., Nature, 2021, 598, 444.; Yoo, J.J., et al., Nature, 2021, 590, 587.
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.
H.A. Dewi et al., ACS Energy Lett., 2024, 9, 4319−4322.
Advanced Materials, 2021, 33, 2005166; L. White et al., ACS Energy Lett., 2024, 9, 835–842.
L. White et al., ACS Energy Lett., 2024, 9, 4450–4458.
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