A thin and flexible scanner for fingerprints and documents based on metal halide perovskites

Abstract

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Synergistic strain engineering of perovskite single crystals for highly stable and sensitive X-ray detectors with low-bias imaging and monitoring

“…However, methylammonium (MA) remains the dominant A-site cation in perovskite single crystals used for high-performance X-ray detectors, with MAPbI 3 being the most commonly used [9][10][11][12][13][14] . These volatile MA cations cause stability issues, limiting the long-term reliability of perovskite X-ray detectors [14][15][16] .…”

Hybrid Halide Perovskite‐Based Near‐Infrared Photodetectors and Imaging Arrays

“…Pb‐based perovskites have been integrated with a high‐resolution thin‐film transistor backplane to demonstrate applications in X‐ray imaging and optical scanning. [ 4,229 ] Encouragingly, it is desirable to develop efficient high‐density pixel arrays with perovskite‐based NIR PDs and explore their applications.…”

Facile synthesis of Mn2+ doped ultrathin (n = 2) NPLs and their application in anti-counterfeiting

“…Metal halide perovskite materials as one of the hottest semiconducting materials have attracted great interest in applications such as solar cells, photodetectors, light-emitting diodes (LEDs) and lasers due to their fascinating properties including high absorption cross-sections, tunable bandgaps, high photoluminescence quantum yield (PLQY). [1][2][3][4][5][6][7][8][9][10][11][12] Recently, most studies on perovskites have focused on the colloidal perovskite nanomaterials because of the strong quantum confinement effect, good stability over the bulk materials and solution processability. 2,[13][14][15][16][17][18][19][20][21] Compared with 3D perovskite nanocrystals (NCs), 2D perovskite nanoplatelets (NPLs) with thicknesses at the atomic scale have many distinct optical properties including narrow absorption and emission spectra, large exciton binding energies and high absorption crosssections.…”