High-Performance Solution Processed Microcavity for Emission Control of CsPbBr3 Perovskite Nanocrystals

Optical microcavities grant the ability to manipulate interactions between light and matter, as well as control light propagation. These capabilities have paved the way for the development of essential optical and optoelectronic components. However, the materials typically used in high-performance systems, primarily bulk inorganics, are often expensive and lack scalability in their processing. In this study, we propose an alternative method for the fabrication of planar optical resonators exclusively through solution-processing, while achieving comparable performance to conventional systems. Our approach involves combining fully solution-processed high dielectric-contrast inorganic Bragg mirrors, which are produced using sol-gel deposition, with the exceptional photoluminescence properties of CsPbBr3 perovskite nanocrystals. The result is microcavities with an unprecedented quality factor of approximately 220, setting a new record for solution-processed inorganic structures.