DOI: https://doi.org/10.29363/nanoge.emlem.2022.039
Publication date: 15th July 2022
Cesium lead halide perovskites are great candidates for lighting applications such as LEDs or screens, due to their bright photoluminescence with narrow bandwidth, originating from a tunable band gap. However, before applications can be realized, important challenges that are inherent to the materials need to be addressed. Lead halide perovskites are unstable under operation conditions - they degrade easily, for example upon contact with water, heat, or strong irradiation. Encapsulating perovskites in silica spheres stabilizes the perovskite emitters, protecting them from these influences. By controlling the shape and size of the silica, the material can be patterned and the optical properties can be tuned. In this talk, I will show the enhanced stability of perovskite emitters in silica spheres. Futhermore, I will provide an optical characterization of individual perovskite-filled silica spheres in the size range in the order of hundreds of nanometers, and methods to pattern these spheres for applications.
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