Publication date: 22nd July 2026
Halide perovskites are regarded as leading candidates for next-generation light-emitting diodes, photodetectors and solar cells owing to their outstanding optoelectronic properties, including tuneable bandgaps, strong absorption and narrow emission linewidths. In this presentation, I will introduce a methodology for extracting the effective complex refractive index of buried perovskite layers and employing these realistic optical constants for the design of advanced optoelectronic devices. First, we employ optical interference and Tamm-plasmon resonances to design LEDs with controlled spectral and angular emission.[1] Then, I will show how we apply the same design principles to resonant-cavity perovskite photodetectors, enabling efficient and spectrally tuneable narrowband detection.[2] Finally, we model and optimise monolithic all-perovskite triple-junction solar cells, where current matching is maximised by design.[3]
1. Z. Y. Ooi, …, G. Vega, et al., Nature Communications 15, 5802 (2024).
2. Z. Y. Ooi, S. Nie, G. Vega, et al., ACS Photonics 12, 8, 4119–4129 (2025).
3. T. C.-J. Yang, …, G. Vega, et al., EES Sol. 1 (1): 41–55 (2025).
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