▎ 摘　　要

NOVELTY - Multilayer composite film comprises two or more layers. Each layer comprises: (i) a porous membrane comprising interconnected channels; and (ii) a radiation sensitive material comprising crystals. The crystals are embedded in interconnected channels of the porous membrane. The porous membrane and the radiation sensitive material in each adjacent layer are the same or different to those of any other layer; and the multilayer composite film is continuous. Alternatively, composite film comprises one layer, the layer comprising: (i) a porous membrane comprising interconnected channels; and (ii) a radiation sensitive material comprising crystals. The crystals are embedded in interconnected channels of the porous membrane; and the composite film is continuous. USE - The film is useful for preparing X-ray device or X-ray detector for digital X-ray imaging (claimed). ADVANTAGE - The methods can generate dense, robust perovskite composite films with a mobility-lifetime product approaching that of single crystals. Methods of integrating the flexible perovskite composite films onto two dimensional read-out arrays is also presented using an anisotropic conductive adhesive, which allows for uni-direction electrical conduction. The X-ray images generated using the composite films exhibit a sensitivity comparable to those produced from single crystals. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) an X-ray device comprising the multilayer composite film or the composite film; (2) an X-ray detector comprising the multilayer composite film or the composite film, an optional first transport layer, a second transport layer, a first electrode, and a second electrode, where the first transport layer, if present, is disposed on the first electrode, the composite film is disposed on the first transport layer if present, the second transport layer is disposed on the composite film, and the second electrode is disposed on the second transport layer; (3) preparing an integrated X-ray detector for use in digital X-ray imaging, which involves contacting an anisotropic conductive adhesive with a readout integrated circuit and contacting the anisotropic conductive adhesive with the X-ray detector; (4) preparing a multilayer continuous composite film comprising two or more layers, which involves: (a) passing a radiation sensitive material precursor solution through a porous membrane, where one or more crystals of the radiation sensitive material are retained in one or more pores of the porous membrane; where (a) is carried out two or more times to prepare the two or more layers; where the radiation sensitive material precursor solution and the porous membrane in adjacent layers are the same or different; and (b) compressing the two or more layers to prepare the continuous composite film; and (5) preparing a continuous composite film comprising one layer, which involves: (a) passing a radiation sensitive material precursor solution through a porous membrane, where one or more crystals of the radiation sensitive material are retained in one or more pores of the porous membrane; and (b) compressing the layer to prepare the continuous composite film.