Lifetime over 10000 hours for organic solar cells with Ir/IrOx electron-transporting layer

Yanxun Li, Bo Huang, Xuning Zhang, Jianwei Ding, Yingyu Zhang, Linge Xiao, Boxin Wang, Qian Cheng, Gaosheng Huang, Hong Zhang, Yingguo Yang, Xiaoying Qi, Qiang Zheng, Yuan Zhang, Xiaohui Qiu, Minghui Liang and Huiqiong Zhou ()
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Yanxun Li: National Center for Nanoscience and Technology
Bo Huang: National Center for Nanoscience and Technology
Xuning Zhang: Beihang University
Jianwei Ding: National Center for Nanoscience and Technology
Yingyu Zhang: National Center for Nanoscience and Technology
Linge Xiao: National Center for Nanoscience and Technology
Boxin Wang: National Center for Nanoscience and Technology
Qian Cheng: National Center for Nanoscience and Technology
Gaosheng Huang: National Center for Nanoscience and Technology
Hong Zhang: National Center for Nanoscience and Technology
Yingguo Yang: Shanghai Advanced Research Institute, Chinese Academy of Sciences
Xiaoying Qi: National Center for Nanoscience and Technology
Qiang Zheng: National Center for Nanoscience and Technology
Yuan Zhang: Beihang University
Xiaohui Qiu: National Center for Nanoscience and Technology
Minghui Liang: National Center for Nanoscience and Technology
Huiqiong Zhou: National Center for Nanoscience and Technology

Nature Communications, 2023, vol. 14, issue 1, 1-10

Abstract: Abstract The stability of organic solar cells is a key issue to promote practical applications. Herein, we demonstrate that the device performance of organic solar cells is enhanced by an Ir/IrOx electron-transporting layer, benefiting from its suitable work function and heterogeneous distribution of surface energy in nanoscale. Notably, the champion Ir/IrOx-based devices exhibit superior stabilities under shelf storing (T80 = 56696 h), thermal aging (T70 = 13920 h), and maximum power point tracking (T80 = 1058 h), compared to the ZnO-based devices. It can be attributed to the stable morphology of photoactive layer resulting from the optimized molecular distribution of the donor and acceptor and the absence of photocatalysis in the Ir/IrOx-based devices, which helps to maintain the improved charge extraction and inhibited charge recombination in the aged devices. This work provides a reliable and efficient electron-transporting material toward stable organic solar cells.

Date: 2023
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DOI: 10.1038/s41467-023-36937-8

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