Publication date: 22nd July 2026
Metal-halide perovskites (MHPs) have rapidly evolved into a versatile platform for both high-performance optoelectronics and emerging quantum devices, owing to their tunable electronic structure and strong light–matter interaction.¹–² In this talk, I will present our advances in vacuum processed perovskites as a scalable and highly controllable route toward next-generation devices3. We demonstrate a sixfold increase in deposition rate while preserving film quality and power conversion efficiency, enabling an annealing-free, high-throughput co-evaporation process for perovskite solar cells.4 Fully vacuum-processed architectures, including soft-sputtered transparent electrodes, further enable ultrathin and stable devices with absorber down to 10 nm.5
Beyond photovoltaics, nanometre-scale thickness control allows the realization of perovskite-based Multiple Quantum Wells (MQWs), where carrier confinement and excitonic coupling can be precisely engineered.⁶=7 These structures open access to quantum-confined regimes and tunable emission phenomena not attainable in bulk systems. Together, these results illustrate how thermal evaporation bridges scalable manufacturing with quantum-enabled optoelectronic functionalities.
References.
1) Min, H., et al., Nature, 2021, 598, 44.; 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 Materials 2025, Li et al, Advanced Energy Materias 2026.
4) Dewi et al. ACS Energy Lett. 2024, 9, 4319-4322
5) L. White et el., ACS Energy Lett 2026
6) Advanced Materials 2021, 33, 2005166; L. White et al. ACS Energy Lett. 2024, 9, 83;
7) L. White, ACS Energy Lett. 2024, 9, 4450. L. White, ACS Energy Lett. 2024, 9, 4450.
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