To produce a highly efficient solar cell, a near-ideal absorber allowing sufficient light absorption and effective carrier transport is important. In this study, for the first time, a nanorod-textured Sb₂(S,Se)₃ bilayer, which consists of vertically oriented Sb₂(S,Se)₃ nanorods on top of a compact bottom layer of Sb₂(S,Se)₃, is prepared using a CsF-assisted one-step hydrothermal method. This bilayer-structured Sb₂(S,Se)₃ possesses enhanced light absorption due to a light-trapping effect. In addition, this structure also leads to improved charge extraction thanks to the increased interfacial contact and optimization of the band alignment. Thanks to these improvements, the best-performing Sb₂(S,Se)₃ solar cell in this study achieves a record power conversion efficiency of 9.37%. A value of 9.01% was officially certified. This study shows that the proposed nanorod-textured Sb₂(S,Se)₃ absorber represents a viable method to fabricate highly efficient Sb₂(S,Se)₃ solar cells.

为了生产高效的太阳能电池，允许足够的光吸收和有效的载流子传输的近乎理想的吸收剂很重要。在这项研究中，首次构建了纳米棒结构的 Sb ₂ (S,Se) ₃双层，它由垂直取向的 Sb ₂ (S,Se) ₃纳米棒组成，位于致密的 Sb ₂ (S, Se) ₃是使用CsF辅助一步水热法制备的。这种双层结构的 Sb ₂ (S,Se) ₃由于光捕获效应，具有增强的光吸收。此外，由于界面接触的增加和能带排列的优化，这种结构还可以改善电荷提取。由于这些改进，本研究中性能最好的 Sb ₂ (S,Se) ₃太阳能电池实现了创纪录的 9.37% 的功率转换效率。9.01% 的值得到官方认证。该研究表明，所提出的纳米棒结构的 Sb ₂ (S,Se) ₃吸收剂代表了一种制造高效 Sb ₂ (S,Se) ₃太阳能电池的可行方法。