The thickness of the scintillation films in indirect X−ray detectors can significantly influence their luminescence intensity. However, due to the scattering and attenuation of incoherent photons, thick scintillation films tend to reduce light yield. Herein, a highly transparent perovskite glass−ceramic scintillation film, in which the CsPbBr₃ nanocrystals are in-situ grown inside a transparent amorphous polymer structure, is designed to achieve ultrastable and efficient X-ray imaging. The crystal coordination−topology growth and in−situ film formation strategy is proposed to control the crystal growth and film thickness, which can prevent light scattering and non−uniform distribution of CsPbBr₃ nanocrystals while providing sufficient film thickness to absorb X−ray, thus enabling a high−quality glass−ceramic scintillator without agglomeration and Ostwald ripening. This glass−ceramic scintillation film with a thickness of 250 μm achieves a low detection limit of 326 nGy_air s⁻¹ and a high spatial resolution of 13.9 lp mm⁻¹. More importantly, it displays remarkable scintillation stability under X−ray irradiation (radiation intensity can still reach 95% at 278 μGy_air s⁻¹ for 3600 s), water soaking (150 days), and high−temperature storage (150 days at 60 °C). Hence, this work presents a approach to construct ultrastable and flexible scintillation films for X−ray imaging with reduced light scattering and improved resolution.

间接 X 射线探测器中闪烁膜的厚度可以显着影响其发光强度。然而，由于非相干光子的散射和衰减，厚的闪烁膜往往会降低光输出。本文设计了一种高透明钙钛矿玻璃陶瓷闪烁薄膜，其中CsPbBr ₃纳米晶体在透明无定形聚合物结构内原位生长，旨在实现超稳定和高效的X射线成像。提出了晶体配位拓扑生长和原位成膜策略来控制晶体生长和膜厚度，可以防止CsPbBr ₃纳米晶体的光散射和不均匀分布，同时提供足够的膜厚度来吸收X射线，从而实现高质量的微晶玻璃闪烁体，而不会发生团聚和奥斯特瓦尔德熟化。这种厚度为250 μm的玻璃陶瓷闪烁膜实现了326 nGy _air s ^-1的低检测限和13.9 lp mm ^-1的高空间分辨率。更重要的是，它在X射线照射（278 μGy_空气s ^-1 3600 s下辐射强度仍可达到95%）、水浸泡（150天）和高温储存（60℃下150天）下表现出显着的闪烁稳定性。 ℃）。因此，这项工作提出了一种构建超稳定和柔性闪烁薄膜的方法，用于 X 射线成像，减少光散射并提高分辨率。