In this study, we developed a Gd 2 O 2 S:Tb screen with a parylene-C-based antireflective (AR) layer and evaluated its optical and X-ray response properties; in particular, we focused on developing an AR coating layer to improve transmission efficiency. The phosphor screen with the parylene-Cbased AR layer can be fabricated via screen printing and chemical vapor deposition. In particular, experimental results obtained using the AR layer showed improvements of 1.47% in luminescence intensity, as well as a lower full width at half maximum of 9.40, compared to the case without using the AR layer. We observed that the roughness of the AR layer was higher than that of the phosphor screen; the image resolution improved owing to the narrow distribution of the secondary photons resulting from forward scattering attributable mainly to Mie scattering. These results indicate that parylene-C is suitable for developing AR coating materials to improve exposure efficiency while maintaining resolution in radiography systems. Therefore, we believe that the number of photons would be further increased if the AR layer were utilized in commercial products.

中文翻译：

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开发具有抗反射层的 Gd2O2S:Tb 荧光屏使用聚氯对二甲苯改善放射学中的光学性能

在这项研究中，我们开发了一种 Gd 2 O 2 S:Tb 屏幕，该屏幕具有基于聚对二甲苯 C 的抗反射 (AR) 层，并评估了其光学和 X 射线响应特性；特别是，我们专注于开发 AR 涂层以提高传输效率。具有聚对二甲苯基 AR 层的荧光屏可以通过丝网印刷和化学气相沉积制造。特别是，与不使用 AR 层的情况相比，使用 AR 层获得的实验结果表明，发光强度提高了 1.47%，半峰全宽降低了 9.40。我们观察到 AR 层的粗糙度高于荧光屏的粗糙度；由于主要归因于米氏散射的前向散射导致二次光子分布较窄，因此图像分辨率得到了提高。这些结果表明聚对二甲苯-C 适用于开发 AR 涂层材料，以提高曝光效率，同时保持射线照相系统的分辨率。因此，我们相信如果将 AR 层用于商业产品，光子的数量将进一步增加。