Self-assembled ultrafine CsPbBr3 perovskite nanowires for polarized light detection

نویسندگان

چکیده

One-dimensional (1D) metal halide perovskite nanowire (NW) arrays with high absorption efficiency, emission yield and dielectric constants, as well anisotropic optoelectronic properties have found applications in energy harvesting, flexible electronics, biomedical imaging devices. Here, a modified two-step solvothermal method is developed for the synthesis of self-assembled cubic CsPbBr3 NW arrays. This provides facile access to continuous uniform ultrafine NWs well-aligned pure arrayed architectures. Under excitation at 365 nm, give strong blue observable naked eyes. The also exhibit two-photon excited luminescence under irradiation an 800 nm pulse laser. By rotating polarization angle laser, dependence degree up ?0.49 demonstrated array, although isotropic structure. Based on density functional theory (DFT) calculations, this polarization-dependent correlated charge distribution NWs. These findings suggest that well-defined architecture could be applied next-generation polarization-sensitive photoelectronic detection materials.

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ژورنال

عنوان ژورنال: Science China. Materials

سال: 2021

ISSN: ['2095-8226', '2199-4501']

DOI: https://doi.org/10.1007/s40843-020-1619-6