Metal halide perovskites have gained significant attention as promising materials for ionizing radiation detection due to their facile fabrication process, exceptional optoelectronic properties and high attenuation coefficients. To effectively absorb the incident X-ray photons, thick active layers have been reported and fabricated via spray-coating. However, the conventional spray-coating method is susceptible to various adverse effects, making it challenging to achieve high-quality thick perovskite films. In this work, we propose the use of antisolvent-assisted spray-coating to deposit perovskite films, which results in small surface roughness, thick films on various substrates. The slow growth of the thick film and the ability to regulate its crystallization through the modulation of processing atmosphere were also carefully studied. The optimized X-ray detector demonstrated a sensitivity of up to 3370.8 μC Gy_air^-1 cm^-2, demonstrating its great potential for X-ray detection applications.

金属卤化物钙钛矿由于其简单的制造工艺、优异的光电性能和高衰减系数而作为电离辐射检测的有前景的材料而受到广泛关注。为了有效地吸收入射的 X 射线光子，已经报道了厚活性层并通过喷涂制造。然而，传统的喷涂方法容易受到各种不利影响，这使得获得高质量的厚钙钛矿薄膜具有挑战性。在这项工作中，我们建议使用反溶剂辅助喷涂来沉积钙钛矿薄膜，这会导致表面粗糙度小，在各种基材上形成厚膜。还仔细研究了厚膜的缓慢生长以及通过调节加工气氛来调节其结晶的能力。_air ^-1 cm ^-2，展示了其在X射线检测应用中的巨大潜力。