A Non-Conjugated Polymer Acceptor for Efficient and Thermally Stable All-Polymer Solar Cells
Artikel i vetenskaplig tidskrift, 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

Författare

Qunping Fan

Chalmers, Kemi och kemiteknik, Tillämpad kemi

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, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

Ruijie Ma

Hong Kong University of Science and Technology

Xin Wen

Chalmers, Kemi och kemiteknik, Tillämpad kemi, 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, Kemi och kemiteknik, Tillämpad kemi, 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 Universitet

Sino-Danish Center for Education and Research (SDC)

He Yan

Hong Kong University of Science and Technology

Maojie Zhang

Soochow University

Ergang Wang

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Ergang Wang Group

Zhengzhou University

Angewandte Chemie

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

Vol. 132 45 20007-20012

Ämneskategorier

Polymerkemi

Textil-, gummi- och polymermaterial

Annan fysik

DOI

10.1002/ange.202005662

Mer information

Senast uppdaterat

2020-10-28