Halide perovskites (HPs), particularly at the nanoscale, attract attention due to their unique optical properties compared to other semiconductors. They exhibit bright emission, defect tolerance, and a broad tunable band gap. The ability to directly transport charge carriers along the HPs nanowires (NWs) has led to the development of methods for their synthesis. Most of these methods involve some version of an oriented attachment step with various modifications. In this study, we introduce CsPbBr₃ nanowires produced via the solution–solid–solid (SSS) catalyst-assisted growth mechanism for the first time. We explored the kinetics of this process and examined the connection between the catalyst phase and its reactivity. We show how HP NWs grow with different SSS catalysts (i.e., Ag₂S, Ag₂Se, CuS) and discuss the required conditions for successful synthesis utilizing this mechanism. This method opens up a new avenue for producing HP NWs, which can be used to design and form new types of hybrid nanostructures.

中文翻译：

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CsPbBr3 钙钛矿纳米线的催化剂辅助生长


卤化物钙钛矿 （HP），尤其是在纳米尺度上，由于其与其他半导体相比独特的光学特性而引起了人们的关注。它们表现出明亮的发射、缺陷容限和较宽的可调谐带隙。沿 HPs 纳米线 （NW） 直接传输电荷载流子的能力导致了其合成方法的发展。这些方法中的大多数都涉及具有各种修改的定向连接步骤的某个版本。在这项研究中，我们首次介绍了通过溶液-固体-固体 （SSS） 催化剂辅助生长机制生产的 CsPbBr₃ 纳米线。我们探索了这个过程的动力学，并研究了催化剂相与其反应性之间的联系。我们展示了 HP NWs 如何使用不同的 SSS 催化剂（即 Ag₂S、Ag₂Se、CuS）生长，并讨论了利用这种机制成功合成所需的条件。这种方法为生产 HP NWs 开辟了一条新途径，可用于设计和形成新型的混合纳米结构。