A Non-Conjugated Polymer Acceptor for Efficient and Thermally Stable All-Polymer Solar Cells
Journal article, 2020

A non-conjugated polymer acceptor PF1-TS4 was firstly synthesized by embedding a thioalkyl segment in the mainchain, which shows excellent photophysical properties on par with a fully conjugated polymer, with a low optical band gap of 1.58 eV and a high absorption coefficient >105 cm−1, a high LUMO level of −3.89 eV, and suitable crystallinity. Matched with the polymer donor PM6, the PF1-TS4-based all-PSC achieved a power conversion efficiency (PCE) of 8.63 %, which is ≈45 % higher than that of a device based on the small molecule acceptor counterpart IDIC16. Moreover, the PF1-TS4-based all-PSC has good thermal stability with ≈70 % of its initial PCE retained after being stored at 85 °C for 180 h, while the IDIC16-based device only retained ≈50 % of its initial PCE when stored at 85 °C for only 18 h. Our work provides a new strategy to develop efficient polymer acceptor materials by linkage of conjugated units with non-conjugated thioalkyl segments.

thermal stability

thioalkyl chain linkages

non-conjugated polymer acceptors

all-polymer solar cells

power conversion efficiency

Author

Qunping Fan

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Wenyan Su

Jinan University

Soochow University

Shanshan Chen

Chongqing University

Ulsan National Institute of Science and Technology (UNIST)

Tao Liu

Hong Kong University of Science and Technology

Wenliu Zhuang

Guangdong Industry Polytechnic

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Polymer Technology

Ruijie Ma

Hong Kong University of Science and Technology

Xin Wen

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Kasper Moth-Poulsen Group

Zhihong Yin

Soochow University

Zhenghui Luo

Hong Kong University of Science and Technology

Xia Guo

Soochow University

Lintao Hou

Jinan University

Kasper Moth-Poulsen

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Kasper Moth-Poulsen Group

Yu Li

Guangdong Industry Polytechnic

Zhiguo Zhang

Beijing University of Chemical Technology

Changduk Yang

Ulsan National Institute of Science and Technology (UNIST)

Donghong Yu

Aalborg University

Sino-Danish Center for Education and Research (SDC)

He Yan

Hong Kong University of Science and Technology

Maojie Zhang

Soochow University

Ergang Wang

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Ergang Wang Group

Zhengzhou University

Angewandte Chemie

0044-8249 (ISSN) 1521-3757 (eISSN)

Vol. 132 45 20007-20012

Subject Categories

Polymer Chemistry

Textile, Rubber and Polymeric Materials

Other Physics Topics

DOI

10.1002/ange.202005662

More information

Latest update

10/28/2020