A comparative study was done on three types of TiO₂ thin film morphology, i.e., mesoporous nanoparticles, nanorods, and nanobranched nanorods thin films, as the scaffold for the perovskite solar cell. The performances of the perovskite-coated thin films were compared in terms of charge carrier extraction, charge transport, and solar energy harvesting via photoluminescence and UV–vis spectroscopies. TiO₂ nanobranched nanorods thin film showed better photovoltaic performance than those of mesoporous nanoparticles and nanorods thin films. The better optical properties of nanobranched nanorods thin film as the scaffold is ascribed to its unique morphological advantages, i.e., remarkable specific surface area along with high-speed pathways for charge carriers. These characteristics lead to great, compact, and uniform perovskite loading, excellent electron transport property, and desired light harvesting performance, which are preferable features for promoting the efficiency of the perovskite solar cells. This paper introduces an outstanding scaffold for fabrication of high-performance perovskite solar cells.

对三种类型的TiO ₂薄膜形态进行了比较研究，即介孔纳米粒子，纳米棒和纳米支化纳米棒薄膜，作为钙钛矿太阳能电池的支架。比较了钙钛矿涂层薄膜的性能，包括载流子提取，电荷传输以及通过光致发光和紫外可见光谱法收集太阳能。二氧化钛₂纳米支化纳米棒薄膜显示出比中孔纳米颗粒和纳米棒薄膜更好的光伏性能。纳米支化纳米棒薄膜作为支架的更好的光学性能归因于其独特的形态优势，即显着的比表面积以及电荷载体的高速通道。这些特性导致钙钛矿的负载量大，紧凑且均匀，电子传输性能优异，并且具有所需的光收集性能，这对于提高钙钛矿太阳能电池的效率是优选的特征。本文介绍了一种用于制造高性能钙钛矿太阳能电池的出色支架。