Hebei Key Laboratory of Optic-Electronic Information Materials, College of Physics Science and Technology, Hebei University, Baoding, 071002, China.
Institute of New Energy Technology, College of Information Science and Technology, Jinan University, Guangzhou, 510632, China.
Nat Commun. 2019 Jan 10;10(1):125. doi: 10.1038/s41467-018-07903-6.
Antimony selenide (SbSe) has a one-dimensional (1D) crystal structure comprising of covalently bonded (SbSe) ribbons stacking together through van der Waals force. This special structure results in anisotropic optical and electrical properties. Currently, the photovoltaic device performance is dominated by the grain orientation in the SbSe thin film absorbers. Effective approaches to enhance the carrier collection and overall power-conversion efficiency are urgently required. Here, we report the construction of SbSe solar cells with high-quality SbSe nanorod arrays absorber along the [001] direction, which is beneficial for sun-light absorption and charge carrier extraction. An efficiency of 9.2%, which is the highest value reported so far for this type of solar cells, is achieved by junction interface engineering. Our cell design provides an approach to further improve the efficiency of SbSe-based solar cells.
碲化锑（SbSe）具有一维（1D）晶体结构，由通过范德华力堆叠在一起的共价键合（SbSe）带组成。这种特殊的结构导致了各向异性的光学和电学性质。目前，光伏器件的性能主要由 SbSe 薄膜吸收体中的晶粒取向决定。因此，迫切需要有效的方法来提高载流子收集和整体功率转换效率。在这里，我们报告了沿[001]方向构建具有高质量 SbSe 纳米棒阵列吸收体的 SbSe 太阳能电池，这有利于太阳光吸收和载流子提取。通过结界面工程，实现了 9.2%的效率，这是迄今为止此类太阳能电池的最高值。我们的电池设计为进一步提高 SbSe 基太阳能电池的效率提供了一种方法。
