AI 中文总结
本研究以CsPbBr₃纳米片为对象，探究厚度与加工方式对其结构和取向有序性的调控，发现厚度决定加工敏感性，2层纳米片取向受加工方式影响小，厚纳米片易出现取向无序。
AI 中文摘要
金属卤化物钙钛矿纳米片兼具量子限域效应与结构各向异性，但其厚度与加工方式如何调控内部晶体晶格及集体组装的问题尚未明确。本研究采用2-5层的CsPbBr₃纳米片及更大尺寸的纳米晶体，结合旋涂与滴涂两种加工方法，区分内部结构、超晶格组装与薄膜织构。对样品的掠入射X射线衍射分析表明，正交晶系相关特征在所有厚度及沉积系列中均重复出现，且存在稳定的晶格-形貌关联：020/040晶面对应纳米片厚度，101/202晶面对应横向尺寸。沉积于基底后，存在厚度依赖的转变：2层纳米片在两种加工方式下均以面朝上取向为主，而更厚的纳米片则表现出显著的加工敏感性与取向无序。因此，加工可作为调控纳米片组装的工具，厚度是决定加工敏感性的关键因素。
英文摘要
Metal halide perovskite nanoplatelets combine quantum confinement with structural anisotropy, yet how thickness and processing govern their internal crystal lattice versus collective organization remains unresolved. In this study, we separate internal structure, superlattice organization, and film texture using 2-5 monolayer CsPbBr3 nanoplatelets and larger nanocrystals across spin-coating and drop-casting routes. Grazing incidence X-ray diffraction analysis of the specimens indicates that orthorhombic-compatible signatures recur throughout the thickness and deposition series, with a preserved lattice-morphology relationship in which 020/040 and 101/202 lattice planes are associated with the platelet thickness and lateral dimensions, respectively. Upon deposition on the substrate, we notice a thickness-dependent crossover: 2-monolayer nanoplatelets remain predominantly face-on across deposition routes, whereas thicker nanoplatelets show marked processing sensitivity and orientational disorder. Processing therefore can be used as a tool to direct the NPL packing, establishing thickness as a key determinant of processing sensitivity.
