Fig. 1: Perovskite-based active multifunctional photonic devices and optical characterizations of monocrystalline CsPbBr3 thin film.
From: Inorganic perovskite-based active multifunctional integrated photonic devices
a–c Schematics of perovskite active beam splitter, X-coupler, and Mach-Zehnder interferometer, respectively. d–f SEM images of the monocrystalline perovskite active beam splitter, X-coupler, and Mach-Zehnder interferometer after FIB treatment, respectively. Scale bar: 5 μm. g Fluorescence microscope image (the upper panel) and XRD (the lower panel) of a monocrystalline CsPbBr3 thin film, showing uniform fluorescence emission and morphology and the orthorhombic phase structure. The XRD peaks originating from the pure mica substrate are marked by *. Scale bar: 30 μm. h Room temperature absorption (red curve) and PL emission spectra (blue curve) of a monocrystalline CsPbBr3 thin film. i TRPL spectrum of the monocrystalline CsPbBr3 thin film, the fitting (red curve) gives two lifetime components of 12.74 and 96.52 ns.
