As deep space exploration is getting further and further away, it is necessary to develop novel packaging shielding material with lightweight and high performance to improve the service life of spacecraft integrated circuits in space radiation environment. However, up to now, constructing a lightweight perovskite/epoxy composite packaging shielding material for spacecraft integrated circuits has not been reported. Hence, in this work, a novel MAPbBr₃/epoxy (CH₃NH₃PbBr₃/EP) composite is firstly reported, which shows excellent gamma-rays shielding performance with high linear attenuation coefficient (3.082 cm⁻¹) and high mass attenuation coefficient (2.047 cm²/g). Radiation shielding mechanism indicates that gamma-rays mainly interact with MAPbBr₃ dispersed in epoxy. In other words, MAPbBr₃ forms a radiation blocking path in epoxy, which significantly attenuates the intensity of incident gamma-rays. In addition, MA⁺ in MAPbBr₃ crystal structure effectively blocks the penetrating behavior of secondary electrons. This work provides a novel strategy for the design and synthesis of high-performance radiation shielding packaging materials.

随着深空探测的距离越来越远，有必要开发新型轻量化、高性能的封装屏蔽材料，以提高航天器集成电路在空间辐射环境下的使用寿命。然而，截至目前，构建航天器集成电路用轻质钙钛矿/环氧树脂复合封装屏蔽材料的报道尚未见报道。因此，在这项工作中，首次报道了一种新型MAPbBr ₃ /环氧树脂（CH ₃ NH ₃ PbBr ₃ /EP）复合材料，该复合材料表现出优异的伽马射线屏蔽性能，具有高线性衰减系数（3.082 cm ^-1）和高质量衰减。系数（2.047 厘米²/G）。辐射屏蔽机制表明伽马射线主要与分散在环氧树脂中的MAPbBr _{3相互作用。}换句话说，MAPbBr ₃在环氧树脂中形成了一个辐射阻挡路径，它显着衰减了入射伽马射线的强度。此外，MAPbBr _{3晶体结构中的MA} ⁺有效地阻断了二次电子的穿透行为。这项工作为高性能辐射屏蔽包装材料的设计和合成提供了一种新的策略。