Conjugated Donor–Acceptor Terpolymers Toward High-Efficiency Polymer Solar Cells
Review article, 2019

The development of conjugated alternating donor–acceptor (D–A) copolymers with various electron-rich and electron-deficient units in polymer backbones has boosted the power conversion efficiency (PCE) over 17% for polymer solar cells (PSCs) over the past two decades. However, further enhancements in PCEs for PSCs are still imperative to compensate their imperfect stability for fulfilling practical applications. Meanwhile development of these alternating D–A copolymers is highly demanding in creative design and syntheses of novel D and/or A monomers. In this regard, when being possible to adopt an existing monomer unit as a third component from its libraries, either a D′ unit or an A′ moiety, to the parent D–A type polymer backbones to afford conjugated D–A terpolymers, it will give a facile and cost-effective method to improve their light absorption and tune energy levels and also interchain packing synergistically. Moreover, the rationally controlled stoichiometry for these components in such terpolymers also provides access for further fine-tuning these factors, thus resulting in high-performance PSCs. Herein, based on their unique features, the recent progress of conjugated D–A terpolymers for efficient PSCs is reviewed and it is discussed how these factors influence their photovoltaic performance, for providing useful guidelines to design new terpolymers toward high-efficiency PSCs.

regioregular polymers

conjugated polymers

random polymers

donor–acceptor terpolymers

polymer solar cells

Author

Dongfeng Dang

Xi'an Jiaotong University

Donghong Yu

Aalborg University

Sino-Danish Center for Education and Research Denmark

Ergang Wang

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

Advanced Materials

09359648 (ISSN) 15214095 (eISSN)

1807019

Subject Categories

Polymer Chemistry

Energy Engineering

Other Engineering and Technologies not elsewhere specified

DOI

10.1002/adma.201807019

More information

Latest update

2/19/2019