The development of all‐inorganic lead‐free Cs3Cu2I5 perovskite materials has garnered significant attention due to their non‐toxic nature and unique optoelectronic properties, particularly in the field of X‐ray detection. However, the stability of perovskites remains a major concern for their optical applications. In this study, a highly stable Cs3Cu2I5‐in‐glass composite (Cs3Cu2I5@Borosilicate) is fabricated by spark plasma sintering (SPS), a rapid and low‐temperature sintering process. The Cs3Cu2I5@Borosilicate composite exhibits strong photoluminescence even after prolonged immersion in various polar solvents, whereas Cs3Cu2I5 perovskite loses its photoluminescence within seconds. Moreover, the Cs3Cu2I5@Borosilicate composite demonstrates robust radio‐luminescence under X‐ray irradiation, and its potential as a scintillator material is validated through prototype X‐ray imaging with a high spatial resolution (≈7 lp mm−1). This innovative composite material holds immense potential for scintillation applications and represents a promising approach for encapsulating perovskites in a transparent amorphous medium.

中文翻译：

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利用 SPS 技术制备用于 X 射线成像的高稳定 Cs3Cu2I5 玻璃复合材料

全无机无铅铯的研制3铜2我5钙钛矿材料因其无毒性质和独特的光电特性而受到广泛关注，特别是在X射线检测领域。然而，钙钛矿的稳定性仍然是其光学应用的主要问题。在这项研究中，高度稳定的Cs3铜2我5玻璃复合材料（Cs3铜2我5@硼硅酸盐）是通过放电等离子烧结（SPS）制造的，这是一种快速低温烧结工艺。铯3铜2我5@硼硅酸盐复合材料即使长时间浸泡在各种极性溶剂中也表现出强烈的光致发光，而Cs3铜2我5钙钛矿在几秒钟内失去光致发光。此外，铯3铜2我5@硼硅酸盐复合材料在 X 射线照射下表现出强大的放射发光，并且通过具有高空间分辨率（约 7 lp mm）的原型 X 射线成像验证了其作为闪烁体材料的潜力−1）。这种创新的复合材料在闪烁应用中具有巨大的潜力，并且代表了一种将钙钛矿封装在透明非晶介质中的有前途的方法。