Crystalline Cooperativity of Donor and Acceptor Segments in Double-Cable Conjugated Polymers toward Efficient Single-Component Organic Solar Cells

Cheng Li; Xianxin Wu; Xinyu Sui; Hongbo Wu; Chao Wang; Guitao Feng; Yonggang Wu; Feng Liu; Xinfeng Liu; Zheng Tang; Weiwei Li

doi:10.1002/anie.201910489

Crystalline Cooperativity of Donor and Acceptor Segments in Double-Cable Conjugated Polymers toward Efficient Single-Component Organic Solar Cells

Angew Chem Int Ed Engl. 2019 Oct 21;58(43):15532-15540. doi: 10.1002/anie.201910489. Epub 2019 Sep 18.

Authors

Cheng Li^{1

2}, Xianxin Wu³, Xinyu Sui³, Hongbo Wu⁴, Chao Wang⁵, Guitao Feng², Yonggang Wu⁵, Feng Liu⁶, Xinfeng Liu³, Zheng Tang⁴, Weiwei Li^{1

2}

Affiliations

¹ Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China.
² Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
³ Division of Nanophotonics, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China.
⁴ Center for Advanced Low-dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China.
⁵ College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, P. R. China.
⁶ Department of Physics and Astronomy and Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai, P. R. China.

PMID: 31469224
DOI: 10.1002/anie.201910489

Abstract

The crystalline cooperativity of the donor and acceptor segment in double-cable conjugated polymers plays an important role in the nanophase separation and photovoltaic performance in single-component organic solar cells (SCOSCs). Two double-cable conjugated polymers with the same conjugated backbone and perylene bisimide (PBI) side units were designed in which PBIs were positioned symmetrically and perpendicularly (P1) and asymmetrically and slantingly (P2) along the conjugated backbones. After thermal annealing, both conjugated backbones and PBI side units in P1 tend to form ordered nanostructures, while PBI side units in P2 dominated the crystallization and hamper the crystallization of conjugated backbones. P1 showed good crystalline cooperativity between conjugated backbones and PBI side units, resulting in improved power conversion efficiencies (PCEs) up to 3.43 % in SCOSCs, while P2 with poor crystalline cooperativity exhibited PCEs below 2.42 %.

Keywords: crystalline cooperativity; double-cable conjugated polymers; nanophase separation; perylene bisimide; single-component organic solar cells.

Publication types

Review

Grants and funding

XDB12030200/the Strategic Priority Research Program