TY - JOUR
T1 - Distannylated Bithiophene Imide
T2 - Enabling High-Performance n-Type Polymer Semiconductors with an Acceptor–Acceptor Backbone
AU - Shi, Yongqiang
AU - Guo, Han
AU - Huang, Jiachen
AU - Zhang, Xianhe
AU - Wu, Ziang
AU - Yang, Kun
AU - Zhang, Yujie
AU - Feng, Kui
AU - Woo, Han Young
AU - Ortiz, Rocio Ponce
AU - Zhou, Ming
AU - Guo, Xugang
N1 - Funding Information:
M.Z. thanks the Project of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (PLN201807) and Key Projects of Application Foundation in Sichuan Province (19YYJC1537). Research at University of M?laga was supported by Junta de Andaluc?a (UMA18- FEDERJA-080). X.G. thanks the Shenzhen Science and Technology Innovation Commission (Nos. JCYJ20170817105905899 and JCYJ20180504165709042). Y.S. thanks the Innovative Research Foundation of Southwest Petroleum University (2019cxyb011). H.Y.W. is grateful for the financial support from the National Research Foundation (NRF) of Korea (NRF-2016M1A2A2940911 and 2019R1A6A1A11044070). This work is supported by Center for Computational Science and Engineering at SUSTech. The authors also thank the Materials Characterization and Preparation Center (MCPC) and the Pico Center of SUSTech for some characterizations in this work.
Funding Information:
M.Z. thanks the Project of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (PLN201807) and Key Projects of Application Foundation in Sichuan Province (19YYJC1537). Research at University of Málaga was supported by Junta de Andalucía (UMA18‐ FEDERJA‐080). X.G. thanks the Shenzhen Science and Technology Innovation Commission (Nos. JCYJ20170817105905899 and JCYJ20180504165709042). Y.S. thanks the Innovative Research Foundation of Southwest Petroleum University (2019cxyb011). H.Y.W. is grateful for the financial support from the National Research Foundation (NRF) of Korea (NRF‐2016M1A2A2940911 and 2019R1A6A1A11044070). This work is supported by Center for Computational Science and Engineering at SUSTech. The authors also thank the Materials Characterization and Preparation Center (MCPC) and the Pico Center of SUSTech for some characterizations in this work.
Publisher Copyright:
© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/8/17
Y1 - 2020/8/17
N2 - A distannylated electron-deficient bithiophene imide (BTI-Tin) monomer was synthesized and polymerized with imide-functionalized co-units to afford homopolymer PBTI and copolymer P(BTI-BTI2), both featuring an acceptor–acceptor backbone with high molecular weight. Both polymers exhibited excellent unipolar n-type character in transistors with electron mobility up to 2.60 cm2 V−1 s−1. When applied as acceptor materials in all-polymer solar cells, PBTI and P(BTI-BTI2) achieved high power-conversion efficiency (PCE) of 6.67 % and 8.61 %, respectively. The PCE (6.67 %) of polymer PBTI, synthesized from the distannylated monomer, is much higher than that (0.14 %) of the same polymer PBTI*, synthesized from typical dibrominated monomer. The 8.61 % PCE of copolymer P(BTI-BTI2) is also higher than those (<1 %) of homopolymers synthesized from dibrominated monomers. The results demonstrate the success of BTI-Tin for accessing n-type polymers with greatly improved device performance.
AB - A distannylated electron-deficient bithiophene imide (BTI-Tin) monomer was synthesized and polymerized with imide-functionalized co-units to afford homopolymer PBTI and copolymer P(BTI-BTI2), both featuring an acceptor–acceptor backbone with high molecular weight. Both polymers exhibited excellent unipolar n-type character in transistors with electron mobility up to 2.60 cm2 V−1 s−1. When applied as acceptor materials in all-polymer solar cells, PBTI and P(BTI-BTI2) achieved high power-conversion efficiency (PCE) of 6.67 % and 8.61 %, respectively. The PCE (6.67 %) of polymer PBTI, synthesized from the distannylated monomer, is much higher than that (0.14 %) of the same polymer PBTI*, synthesized from typical dibrominated monomer. The 8.61 % PCE of copolymer P(BTI-BTI2) is also higher than those (<1 %) of homopolymers synthesized from dibrominated monomers. The results demonstrate the success of BTI-Tin for accessing n-type polymers with greatly improved device performance.
KW - all-polymer solar cells
KW - n-type acceptor–acceptor polymers
KW - organic thin-film transistors
KW - polymer molecular weight
KW - stannylated bithiophene imide
UR - http://www.scopus.com/inward/record.url?scp=85087617453&partnerID=8YFLogxK
U2 - 10.1002/anie.202002292
DO - 10.1002/anie.202002292
M3 - Article
C2 - 32472603
AN - SCOPUS:85087617453
VL - 59
SP - 14449
EP - 14457
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
SN - 1433-7851
IS - 34
ER -