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Nanorod-Textured Sb2(S,Se)3 Bilayer with Enhanced Light Harvesting and Accelerated Charge Extraction for High-Efficiency Sb2(S,Se)3 Solar Cells
Chemical Engineering Journal ( IF 13.3 ) Pub Date : 2022-02-19 , DOI: 10.1016/j.cej.2022.135341
Xiaoqiang Shi 1 , Fan Zhang 1 , Songyuan Dai 2 , Pengju Zeng 1 , Junle Qu 1, 3 , Jun Song 1
Affiliation  

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.



中文翻译:

用于高效 Sb2(S,Se)3 太阳能电池的纳米棒纹理 Sb2(S,Se)3 双层增强光捕获和加速电荷提取

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。

更新日期:2022-02-20
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