Work

Superior nonlinear optical performance of CsPbBr 3 all-inorganic metal halide perovskite nano-crystals embedded Ge 2 S 3 chalcogenide glass

Year: 2025

Type: article

Abstract: In this work, we synthesized a novel optical functional nanocomposite material by incorporating all-inorganic metal halide perovskite (MHP, CsPbBr 3 ) nano-crystals to Ge 2 S 3 chalcogenide glass (ChG), and discovered their superior nonlinear optical performance, which is as good as organic-inorganic hybrid MHPs. This all-inorganic MHP-ChG nanocomposite has tunable nonlinear refractive index ( n 2 ) and two-photon absorption coefficient ( β 2PA ) via crystallinity of the MHP crystals, as well as exceptional optical limiting performance, with optical limiting threshold (OLT) values in the near-infrared wavelengths ranging from tens to hundreds of μJ/cm 2 , which greatly outperforms the OLT reported for most existing optical limiting materials. This renders the present MHP-ChG nanocomposites highly promising for applications in laser protection based on optical limiting.

Source: Optics Express

DOI: 10.1364/oe.558751