Fig. 19: Perovskite nanosheets and layered perovskite scintillators for X-ray imaging.

a Schematic showing the self-assembly of CsPbBr₃ nanosheets. Reproduced with permission¹⁵⁸, Copyright 2019, American Chemical Society. b Photograph of a heavily loaded colloid (150 mg mL⁻¹) in toluene. Reproduced with permission¹⁵⁸, Copyright 2019, American Chemical Society. c A wafer-size thin film on a glass slide. Reproduced with permission¹⁵⁸, Copyright 2019, American Chemical Society. d TEM image of assembled CsPbBr₃ nanoplatelets with an interplane spacing of 2.1 nm. Reproduced with permission¹⁵⁸, Copyright 2019, American Chemical Society. e HRTEM image of (d), showing a clear lattice fringe of (200) facets. Reproduced with permission¹⁵⁸, Copyright 2019, American Chemical Society. f Photographs of the concentrated colloid (0.15 g mL⁻¹) under ambient light and X-rays. Reproduced with permission¹⁵⁸, Copyright 2019, American Chemical Society. g Photograph of a transistor panel in a cellphone. The interior structure of the resin-covered panel (red dashed square) is clearly seen using a perovskite thin-film screen under X-radiation. Reproduced with permission¹⁵⁸, Copyright 2019, American Chemical Society. h Photograph of a standard central processing unit panel with a silicon chip integrated underneath. X-ray image of the part covered (red dashed square) by the silicon chip, showing good resolution. Reproduced with permission¹⁵⁸, Copyright 2019, American Chemical Society. i Schematic of the synthesis of 2D layered (C₈H₁₇NH₃)₂SnBr₄ perovskite scintillators. Reproduced with permission¹⁵⁹, Copyright 2020, American Chemical Society. j High-resolution TEM image of the prepared (C₈H₁₇NH₃)₂SnBr₄ perovskite. Reproduced with permission¹⁵⁹, Copyright 2020, American Chemical Society. k Photograph of a (C₈H₁₇NH₃)₂SnBr₄ colloidal solution under ambient light (left) and UV light of 365 nm (right). Reproduced with permission¹⁵⁹, Copyright 2020, American Chemical Society. l SEM image of the exterior surface of the perovskite scintillator film. Reproduced with permission¹⁵⁹, Copyright 2020, American Chemical Society. m Schematic of the experimental setup used for X-ray imaging of samples. Reproduced with permission¹⁵⁹, Copyright 2020, American Chemical Society. n Photographs of target materials (a capsule containing a spring inside, a circuit board, and a crab) and the images obtained by X-ray imaging. Reproduced with permission¹⁵⁹, Copyright 2020, American Chemical Society