A flexible and highly sensitive scintillation screen is urgently expected for X-ray imaging technology, especially for non-flat, flexible objects in medical and industrial applications. Here, we report a sandwich structure of polymer-perovskite quantum dots-polymer (PPP) scintillation screen. The outer polymer layer provides high mechanical stability and encapsulation for the internal perovskite quantum dots active layer. The relative light output remains 93 ± 0.5% of its initial value after bending cycles up to 600 with a bending radius down to 2.5 mm. This PPP scintillation screen exhibits ultra-sensitivity to low energy X-ray with a detection limit of 1.57nGy_air/s and fast decay time of 63.7ns. Well-resolved X-ray images are recorded with a common digital camera with a spatial resolution of 5.35 lp/mm at MTF = 0.3 under the exposure dose of 12 μGy_air, which is much lower than the requirement of medical applications. These features demonstrate that this flexible scintillation screen can be applied for non-flat X-ray imaging applications under low-dose X-ray exposure.

对于X射线成像技术，尤其是在医疗和工业应用中的非平坦，柔性物体，迫切需要一种柔性且高度灵敏的闪烁屏幕。在这里，我们报告聚合物-钙钛矿量子点-聚合物（PPP）闪烁屏的三明治结构。外部聚合物层为内部钙钛矿量子点有源层提供了高机械稳定性和封装性。经过长达600次的弯曲循环后，弯曲半径降低至2.5 mm，相对光输出仍保持其初始值的93±0.5％。这款PPP闪烁屏对低能X射线具有超高灵敏度，检测极限为1.57nGy_空气/ s和63.7ns的快速衰减时间。在12μGy_空气的暴露剂量下，使用MTF = 0.3的普通数码相机以5.35 lp / mm的空间分辨率记录分辨率良好的X射线图像，这远低于医疗应用的要求。这些特征表明，该柔性闪烁屏可在低剂量X射线照射下用于非平面X射线成像应用。