TY - JOUR
T1 - Organic solar cells with 21% efficiency enabled by a hybrid interfacial layer with dual-component synergy
AU - Li, Congqi
AU - Cai, Yunhao
AU - Hu, Pengfei
AU - Liu, Tao
AU - Zhu, Lei
AU - Zeng, Rui
AU - Han, Fei
AU - Zhang, Ming
AU - Zhang, Meng
AU - Lv, Jikai
AU - Ma, Yuanxin
AU - Han, Dexia
AU - Lin, Qijie
AU - Xu, Jingwen
AU - Yu, Na
AU - Qiao, Jiawei
AU - Wang, Jiarui
AU - Zhang, Xin
AU - Xia, Jianlong
AU - Tang, Zheng
AU - Ye, Long
AU - Li, Xiaoyi
AU - Xu, Zihao
AU - Hao, Xiaotao
AU - Peng, Qian
AU - Liu, Feng
AU - Guo, Lin
AU - Huang, Hui
N1 - Publisher Copyright:
© The Author(s), under exclusive licence to Springer Nature Limited 2025.
PY - 2025/10
Y1 - 2025/10
N2 - The cathode interfacial layer (CIL) critically influences electron extraction and charge recombination, thereby playing a pivotal role in organic solar cells (OSCs). However, most state-of-the-art CILs are constrained by limited conductivity, high recombination and poor morphology, which collectively hinder device efficiency and stability. Here we report an inorganic–organic hybrid CIL (AZnO-F3N), developed by a dual-component synergy strategy, which integrates organic material PNDIT-F3N with two-dimensional amorphous zinc oxide. This design leverages the synergistic interactions between two-dimensional amorphous zinc oxide and PNDIT-F3N, resulting in reduced interfacial defect, enhanced conductivity and improved film uniformity. OSCs incorporating the AZnO-F3N CIL exhibit more efficient charge extraction and transport, along with reduced recombination. Consequently, a D18:L8-BO-based binary OSC achieves an efficiency of 20.6%. The introduction of BTP-eC9 as the third component further elevates the efficiency to 21.0% (certified as 20.8%). Moreover, the CIL demonstrates versatility across various active layers, thick-film configuration and flexible devices, underscoring its great potential to advance OSC technology.
AB - The cathode interfacial layer (CIL) critically influences electron extraction and charge recombination, thereby playing a pivotal role in organic solar cells (OSCs). However, most state-of-the-art CILs are constrained by limited conductivity, high recombination and poor morphology, which collectively hinder device efficiency and stability. Here we report an inorganic–organic hybrid CIL (AZnO-F3N), developed by a dual-component synergy strategy, which integrates organic material PNDIT-F3N with two-dimensional amorphous zinc oxide. This design leverages the synergistic interactions between two-dimensional amorphous zinc oxide and PNDIT-F3N, resulting in reduced interfacial defect, enhanced conductivity and improved film uniformity. OSCs incorporating the AZnO-F3N CIL exhibit more efficient charge extraction and transport, along with reduced recombination. Consequently, a D18:L8-BO-based binary OSC achieves an efficiency of 20.6%. The introduction of BTP-eC9 as the third component further elevates the efficiency to 21.0% (certified as 20.8%). Moreover, the CIL demonstrates versatility across various active layers, thick-film configuration and flexible devices, underscoring its great potential to advance OSC technology.
UR - https://www.scopus.com/pages/publications/105011081136
U2 - 10.1038/s41563-025-02305-8
DO - 10.1038/s41563-025-02305-8
M3 - 文章
C2 - 40681865
AN - SCOPUS:105011081136
SN - 1476-1122
VL - 24
SP - 1626
EP - 1634
JO - Nature Materials
JF - Nature Materials
IS - 10
ER -