Due to environmental stability issues and the presence of lead in high-performing 3D perovskites and organic 2D perovskites have emerged as excellent light-harvesting materials and gained immense attention for optoelectronic applications such as perovskite solar cells (PSCs) as a capping layer as well as a light-harvesting material. In this paper, we have investigated the effect of varying the type of aromatic amines (benzylamines) and alkyl chain length (hexadecyl and tetradecyl substituted benzylamines), incorporated into organic halide 2D perovskites, on their optoelectronic properties. We synthesized the 2D perovskites were synthesized by adopting the ligand assisted reprecipitation (LARP) technique and analysed their optical properties by using the UV–Visible and Photoluminescence, structural composition using thin-film XRD and morphology analysis using scanning and transmission electron microscopy (SEM and TEM). Our experimental finding suggests the formation of various shapes such as quantum dots, cubic shapes and nanorods which depend on the length of the carbon chain attached to the benzylamines.

由于环境稳定性问题以及高性能 3D 钙钛矿和有机 2D 钙钛矿中铅的存在，已成为优异的集光材料，并在光电应用中获得了极大的关注，如钙钛矿太阳能电池 (PSC) 作为覆盖层以及一种捕光材料。在本文中，我们研究了不同类型的芳香胺（苄胺）和烷基链长度（十六烷基和十四烷基取代的苄胺）结合到有机卤化物二维钙钛矿中对其光电性能的影响。我们采用配体辅助再沉淀（LARP）技术合成了二维钙钛矿，并利用紫外可见光和光致发光分析了它们的光学性质，结构组成使用薄膜 XRD 和形态分析使用扫描和透射电子显微镜（SEM 和 TEM）。我们的实验发现表明各种形状的形成，例如量子点、立方体形状和纳米棒，这取决于连接到苄胺的碳链的长度。