TY - JOUR
T1 - Asymmetric electron acceptor enables highly luminescent organic solar cells with certified efficiency over 18%
AU - He, Chengliang
AU - Chen, Zeng
AU - Wang, Tonghui
AU - Shen, Ziqiu
AU - Li, Yaokai
AU - Zhou, Jiadong
AU - Yu, Jianwei
AU - Fang, Huiyu
AU - Li, Yuhao
AU - Li, Shuixing
AU - Lu, Xinhui
AU - Ma, Wei
AU - Gao, Feng
AU - Xie, Zengqi
AU - Coropceanu, Veaceslav
AU - Zhu, Haiming
AU - Bredas, Jean Luc
AU - Zuo, Lijian
AU - Chen, Hongzheng
N1 - Publisher Copyright:
© 2022, The Author(s).
PY - 2022/12
Y1 - 2022/12
N2 - Enhancing the luminescence property without sacrificing the charge collection is one key to high-performance organic solar cells (OSCs), while limited by the severe non-radiative charge recombination. Here, we demonstrate efficient OSCs with high luminescence via the design and synthesis of an asymmetric non-fullerene acceptor, BO-5Cl. Blending BO-5Cl with the PM6 donor leads to a record-high electroluminescence external quantum efficiency of 0.1%, which results in a low non-radiative voltage loss of 0.178 eV and a power conversion efficiency (PCE) over 15%. Importantly, incorporating BO-5Cl as the third component into a widely-studied donor:acceptor (D:A) blend, PM6:BO-4Cl, allows device displaying a high certified PCE of 18.2%. Our joint experimental and theoretical studies unveil that more diverse D:A interfacial conformations formed by asymmetric acceptor induce optimized blend interfacial energetics, which contributes to the improved device performance via balancing charge generation and recombination.
AB - Enhancing the luminescence property without sacrificing the charge collection is one key to high-performance organic solar cells (OSCs), while limited by the severe non-radiative charge recombination. Here, we demonstrate efficient OSCs with high luminescence via the design and synthesis of an asymmetric non-fullerene acceptor, BO-5Cl. Blending BO-5Cl with the PM6 donor leads to a record-high electroluminescence external quantum efficiency of 0.1%, which results in a low non-radiative voltage loss of 0.178 eV and a power conversion efficiency (PCE) over 15%. Importantly, incorporating BO-5Cl as the third component into a widely-studied donor:acceptor (D:A) blend, PM6:BO-4Cl, allows device displaying a high certified PCE of 18.2%. Our joint experimental and theoretical studies unveil that more diverse D:A interfacial conformations formed by asymmetric acceptor induce optimized blend interfacial energetics, which contributes to the improved device performance via balancing charge generation and recombination.
UR - https://www.scopus.com/pages/publications/85129991897
U2 - 10.1038/s41467-022-30225-7
DO - 10.1038/s41467-022-30225-7
M3 - 文章
C2 - 35545620
AN - SCOPUS:85129991897
SN - 2041-1723
VL - 13
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 2598
ER -