CC BY-NC-ND 4.0 · Organic Materials 2020; 02(03): 214-222
DOI: 10.1055/s-0040-1713857
Original Article
The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/). (2020) The Author(s).

Effects of the Electron-Deficient Third Components in n-Type Terpolymers on Morphology and Performance of All-Polymer Solar Cells

Bin Liu
a  Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, Southern University of Science and Technology (SUSTech), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
b  School of Advanced Materials, Peking University Shenzhen Graduate School, Peking University, Shenzhen 518055, China
c  Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore
,
a  Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, Southern University of Science and Technology (SUSTech), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
,
Chang Woo Koh
d  Department of Chemistry, Korea University, Seoul 136-713, South Korea
,
Mengyao Su
a  Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, Southern University of Science and Technology (SUSTech), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
,
Bao Tu
a  Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, Southern University of Science and Technology (SUSTech), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
,
Yumin Tang
a  Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, Southern University of Science and Technology (SUSTech), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
,
Qiaogan Liao
a  Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, Southern University of Science and Technology (SUSTech), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
,
Junwei Wang
a  Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, Southern University of Science and Technology (SUSTech), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
,
Wanli Yang
a  Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, Southern University of Science and Technology (SUSTech), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
,
b  School of Advanced Materials, Peking University Shenzhen Graduate School, Peking University, Shenzhen 518055, China
,
d  Department of Chemistry, Korea University, Seoul 136-713, South Korea
,
a  Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, Southern University of Science and Technology (SUSTech), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
› Author Affiliations
Funding Information H.S. thanks NSFC (21801124) for the financial support. X.G. is grateful to the Shenzhen Basic Research Fund (JCYJ20170817105905899) and the Shenzhen Peacock Plan Project (KQTD20140630110339343). H.M. is grateful to the Shenzhen Science and Technology research grant (JCYJ20180302153406868) and Shenzhen Hong Kong Innovation Circle Joint R and D project (SGLH20161212101631809). B.L. thanks China Scholarship Council Fund (No.201906010074). H.Y.W. is grateful for the financial support from the National Research Foundation (NRF) of Korea (2019R1A6A1A11044070).
Further Information

Publication History

Received: 29 April 2020

Accepted after revision: 26 May 2020

Publication Date:
16 July 2020 (online)


Abstract

Compared with p-type terpolymers, less effort has been devoted to n-type analogs. Herein, we synthesized a series of n-type terpolymers via incorporating three electron-deficient third components including thienopyrroledione (TPD), phthalimide, and benzothiadiazole into an imide-functionalized parent n-type copolymer to tune optoelectronic properties without sacrificing the n-type characteristics. Due to effects of the third components with different electron-accepting ability and solubility, the resulting three polymers feature distinct energy levels and crystallinity. In addition, heteroatoms (S, O, and N) attached on the third components trigger intramolecular noncovalent interactions, which can increase molecule planarity and have a significant effect on the packing structures of the polymer films. As a result, the best power conversion efficiency of 8.28% was achieved from all-polymer solar cells (all-PSCs) based on n-type terpolymer containing TPD. This is contributed by promoted electron mobility and face-on polymer packing, showing the pronounced advantages of the TPD used as a third component for thriving efficient n-type terpolymers. The generality is also successfully validated in a benchmark polymer donor/acceptor system by introducing TPD into the benchmark n-type polymer N2200. The results demonstrate the feasibility of introducing suitable electron-deficient building blocks as the third components for high-performance n-type terpolymers toward efficient all-PSCs.

Supporting Information

Supporting information for this article is available online at http://doi.org/10.1055/s-0040-1713857.


Supporting Information

 
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