9.2%-efficient core-shell structured antimony selenide nanorod array solar cells

Zhiqiang Li (), Xiaoyang Liang, Gang Li, Haixu Liu, Huiyu Zhang, Jianxin Guo, Jingwei Chen, Kai Shen, Xingyuan San, Wei Yu, Ruud E. I. Schropp and Yaohua Mai ()
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Zhiqiang Li: Hebei University
Xiaoyang Liang: Hebei University
Gang Li: Hebei University
Haixu Liu: Hebei University
Huiyu Zhang: Hebei University
Jianxin Guo: Hebei University
Jingwei Chen: Hebei University
Kai Shen: Jinan University
Xingyuan San: Hebei University
Wei Yu: Hebei University
Ruud E. I. Schropp: Jinan University
Yaohua Mai: Jinan University

Nature Communications, 2019, vol. 10, issue 1, 1-9

Abstract: Abstract Antimony selenide (Sb2Se3) has a one-dimensional (1D) crystal structure comprising of covalently bonded (Sb4Se6)n 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 Sb2Se3 thin film absorbers. Effective approaches to enhance the carrier collection and overall power-conversion efficiency are urgently required. Here, we report the construction of Sb2Se3 solar cells with high-quality Sb2Se3 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 Sb2Se3-based solar cells.

Date: 2019
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DOI: 10.1038/s41467-018-07903-6

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