Double-Cavity Modulation of Exciton Polaritons in CsPbBr<sub>3</sub> Microwire.
basic_science · Level V
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- Record sourced from PubMed, PMID 36399405.
- Also identified by DOI 10.1021/acs.nanolett.2c03147.
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Abstract
The lead halide perovskite has become a promising candidate for the study of exciton polaritons due to their excellent optical properties. Here, both experimental and simulated results confirm the existence of two kinds of Fabry-Pérot microcavities in a single CsPbBr<sub>3</sub> microwire with an isosceles right triangle cross section, and we experimentally demonstrate that confined photons in a straight and a folded Fabry-Pérot microcavity are strongly coupled with excitons to form exciton polaritons. Furthermore, we reveal the polarization characteristic and double-cavity modulation of exciton polaritons emission by polarization-resolved fluorescence spectroscopy. Our results not only prove that the modulation of exciton polaritons emission can occur in this simple double-cavity system but also provide a possibility to develop related polariton devices.