TY - JOUR
T1 - Multi-Selenophene-Containing Narrow Bandgap Polymer Acceptors for All-Polymer Solar Cells with over 15 % Efficiency and High Reproducibility
AU - Fan, Qunping
AU - Fu, Huiting
AU - Wu, Qiang
AU - Wu, Ziang
AU - Lin, Francis
AU - Zhu, Zonglong
AU - Min, Jie
AU - Woo, Han Young
AU - Jen, Alex K.Y.
N1 - Funding Information:
This work was supported by the APRC Grants of the City University of Hong Kong (9380086), Innovation and Technology Bureau (ITS/497/18FP, GHP/021/18SZ), Guangdong‐Hong Kong‐Macao joint laboratory of optoelectronic and magnetic materials (2019B121205002), and Collaborative Research Fund grant (C5037‐18G) from the Research Grants Council of Hong Kong, and Guangdong Major Project of Basic and Applied Basic Research (2019B030302007). A.K.‐Y.J. is thankful for the sponsorship of the Lee Shau‐Kee Chair Professor (Materials Science). J.M. is grateful for financial support from the National Natural Science Foundation of China (51773157 and 52061135206). H.Y.W. is thankful for financial support from the National Research Foundation (NRF) of Korea (NRF‐2016M1A2A2940911 and 2019R1A6A1A11044070). Feng Qi, Wei Gao, Baobing Fan, Huiliang Sun, and Yuxiang Li are acknowledged for the synthesis and characterization of materials and helpful discussion.
Funding Information:
This work was supported by the APRC Grants of the City University of Hong Kong (9380086), Innovation and Technology Bureau (ITS/497/18FP, GHP/021/18SZ), Guangdong-Hong Kong-Macao joint laboratory of optoelectronic and magnetic materials (2019B121205002), and Collaborative Research Fund grant (C5037-18G) from the Research Grants Council of Hong Kong, and Guangdong Major Project of Basic and Applied Basic Research (2019B030302007). A.K.-Y.J. is thankful for the sponsorship of the Lee Shau-Kee Chair Professor (Materials Science). J.M. is grateful for financial support from the National Natural Science Foundation of China (51773157 and 52061135206). H.Y.W. is thankful for financial support from the National Research Foundation (NRF) of Korea (NRF-2016M1A2A2940911 and 2019R1A6A1A11044070). Feng Qi, Wei Gao, Baobing Fan, Huiliang Sun, and Yuxiang Li are acknowledged for the synthesis and characterization of materials and helpful discussion.
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/7/12
Y1 - 2021/7/12
N2 - All-polymer solar cells (all-PSCs) progressed tremendously due to recent advances in polymerized small molecule acceptors (PSMAs), and their power conversion efficiencies (PCEs) have exceeded 15 %. However, the practical applications of all-PSCs are still restricted by a lack of PSMAs with a broad absorption, high electron mobility, low energy loss, and good batch-to-batch reproducibility. A multi-selenophene-containing PSMA, PFY-3Se, was developed based on a selenophene-fused SMA framework and a selenophene π-spacer. Compared to its thiophene analogue PFY-0Se, PFY-3Se shows a ≈30 nm red-shifted absorption, increased electron mobility, and improved intermolecular interaction. In all-PSCs, PFY-3Se achieved an impressive PCE of 15.1 % with both high short-circuit current density of 23.6 mA cm−2 and high fill factor of 0.737, and a low energy loss, which are among the best values in all-PSCs reported to date and much better than PFY-0Se (PCE=13.0 %). Notably, PFY-3Se maintains similarly good batch-to-batch properties for realizing reproducible device performance, which is the first reported and also very rare for the PSMAs. Moreover, the PFY-3Se-based all-PSCs show low dependence of PCE on device area (0.045–1.0 cm2) and active layer thickness (110–250 nm), indicating the great potential toward practical applications.
AB - All-polymer solar cells (all-PSCs) progressed tremendously due to recent advances in polymerized small molecule acceptors (PSMAs), and their power conversion efficiencies (PCEs) have exceeded 15 %. However, the practical applications of all-PSCs are still restricted by a lack of PSMAs with a broad absorption, high electron mobility, low energy loss, and good batch-to-batch reproducibility. A multi-selenophene-containing PSMA, PFY-3Se, was developed based on a selenophene-fused SMA framework and a selenophene π-spacer. Compared to its thiophene analogue PFY-0Se, PFY-3Se shows a ≈30 nm red-shifted absorption, increased electron mobility, and improved intermolecular interaction. In all-PSCs, PFY-3Se achieved an impressive PCE of 15.1 % with both high short-circuit current density of 23.6 mA cm−2 and high fill factor of 0.737, and a low energy loss, which are among the best values in all-PSCs reported to date and much better than PFY-0Se (PCE=13.0 %). Notably, PFY-3Se maintains similarly good batch-to-batch properties for realizing reproducible device performance, which is the first reported and also very rare for the PSMAs. Moreover, the PFY-3Se-based all-PSCs show low dependence of PCE on device area (0.045–1.0 cm2) and active layer thickness (110–250 nm), indicating the great potential toward practical applications.
KW - all-polymer solar cells
KW - batch-to-batch insensitivity
KW - narrow band gap polymer acceptors
KW - power conversion efficiencies
KW - selenophene
UR - http://www.scopus.com/inward/record.url?scp=85107576358&partnerID=8YFLogxK
U2 - 10.1002/anie.202101577
DO - 10.1002/anie.202101577
M3 - Article
C2 - 33939259
AN - SCOPUS:85107576358
SN - 1433-7851
VL - 60
SP - 15935
EP - 15943
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 29
ER -