PEROVSKITE-BASED X-RAY IMAGE DETECTOR
    25.
    发明公开

    公开(公告)号:US20230161057A1

    公开(公告)日:2023-05-25

    申请号:US17908722

    申请日:2021-03-04

    摘要: A direct conversion x-ray detection apparatus having a planar x-ray detection layer having a detection layer upper surface and a detection layer lower surface, the planar x-ray detection layer including a lead halide perovskite material; a top electrode layer above the detection layer upper surface; a bottom electrode layer below the detection layer lower surface and in conductive communication with the top electrode layer through the x-ray detection layer to apply a bias voltage across the x-ray detection layer; and a blocking layer between the x-ray detection layer and the top electrode layer to inhibit a dark current, the blocking layer including a polymer selected from the group comprising polyacrylates, polyimides, polyamides, polysulfones, polystyrenes, and polycarbonates.

    INKJET PRINTED ARTICLES AND METHOD OF MAKING

    公开(公告)号:US20220379646A1

    公开(公告)日:2022-12-01

    申请号:US17324394

    申请日:2021-05-19

    摘要: An aqueous composition can be used for pre-treating a substrate prior to inkjet printing to provide a white opaque background for inkjet-printed images. This aqueous composition includes: (a) one or more water-soluble salts of a multivalent metal cation at 5-30 weight %; (b) a nonionic or cationic water-soluble or water-dispersible polymeric binder material at 5-30 weight %; and (c) surface-treated visible light-scattering particles having a D50 (median) particle size of at least 0.04 μm and up to and including 2 μm in an amount of 5-60 weight % based on the total aqueous composition weight. The pre-treated substrate is useful as an inkjet receiving medium that can be readily inkjet-printed particularly with anionically-stabilized aqueous pigment-based inks.