Characteristics of Halide Perovskites via Low-pressure Vapor-assisted Solution Process (LP-VASP)

The halide perovskites materials have received exceptional attention for various photonics applications due to their unique materials characteristics. In this presentation, we will show halide perovskites thin film made of low-dimensional/3D mixed structure fabricated via Low-pressure vapor-assisted solution process (LP-VASP) which demonstrated for the first to synthesis Low-dimensional and 3D mixed perovskite by vapor phase method. Their performances in photovoltaic and non-linear optical properties will be presented and discussed. Such families of hybrid organic-inorganic halide perovskite semiconductors are promising candidates for next generation photonic and applications such as solar cells, light-emitting diode, and lasing devices. The slightly 2D doped perovskite showed larger grain size and better photovoltaic performances in both power conversion efficiency and stability. For highly 2D doped perovskite thin film, we observed multiple PL emission spectra with significant multiphoton absorption characteristics, which implies the co-existence of multiple n-layered perovskites domains in one film. The nonlinear optical effects and materials properties are characterized in detail by multiphoton spectroscopy, KPFM, TR-PL, and PL mapping.

Automated summary

Halide perovskite materials have unique characteristics that make them highly attractive for photonics applications. In this presentation, a low-dimensional/3D mixed structure halide perovskite thin film is fabricated using a low-pressure vapor-assisted solution process (LP-VASP), which demonstrates the synthesis of low-dimensional and 3D mixed perovskite by vapor phase method. The performance of these materials in photovoltaic and nonlinear optical properties is discussed. These hybrid organic-inorganic halide perovskite semiconductors show great potential for next-generation photonic applications such as solar cells, LEDs, and lasing devices. The slightly 2D doped perovskite thin film exhibits larger grain size and better photovoltaic performance, including power conversion efficiency and stability. For highly 2D doped perovskite thin films, multiple photoluminescence emission spectra with significant multiphoton absorption characteristics are observed, indicating the co-existence of multiple n-layered perovskite domains in one film. Nonlinear optical effects and material properties are characterized in detail using multiphoton spectroscopy, KPFM, TR-PL, and PL mapping.