中文版 | English
Title

A monothiophene unit incorporating both fluoro and ester substitution enabling high-performance donor polymers for non-fullerene solar cells with 16.4% efficiency

Author
Corresponding AuthorLiu, Tao; Lu, Xinhui; Guo, Xugang; Yan, He
Publication Years
2019-11
DOI
Source Title
ISSN
1754-5692
EISSN
1754-5706
Volume12Issue:11Pages:3328-3337
Abstract
Thiophene and its derivatives have been extensively used in organic electronics, particularly in the field of polymer solar cells (PSCs). Significant research efforts have been dedicated to modifying thiophene-based units by attaching electron-donating or withdrawing groups to tune the energy levels of conjugated materials. Herein, we report the design and synthesis of a novel thiophene derivative, FE-T, featuring a monothiophene functionalized with both an electron-withdrawing fluorine atom (F) and an ester group (E). The FE-T unit possesses distinctive advantages of both F and E groups, the synergistic effects of which enable significant downshifting of the energy levels and enhanced aggregation/crystallinity of the resulting organic materials. Shown in this work are a series of polymers obtained by incorporating the FE-T unit into a PM6 polymer to fine-tune the energetics and morphology of this high-performance PSC material. The optimal polymer in the series shows a downshifted HOMO and an improved morphology, leading to a high PCE of 16.4% with a small energy loss (0.53 eV) enabled by the reduced non-radiative energy loss (0.23 eV), which are among the best values reported for non-fullerene PSCs to date. This work shows that the FE-T unit is a promising building block to construct donor polymers for high-performance organic photovoltaic cells.
URL[Source Record]
Indexed By
SCI ; EI
Language
English
Funding Project
HKUST president's office[FP201]
WOS Research Area
Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
WOS Subject
Chemistry, Multidisciplinary ; Energy & Fuels ; Engineering, Chemical ; Environmental Sciences
WOS Accession No
WOS:000494816300015
Publisher
EI Accession Number
20194607685887
EI Keywords
Energy dissipation ; Esters ; Fullerenes ; Morphology ; Organic polymers ; Photoelectrochemical cells ; Photovoltaic cells ; Thiophene
ESI Classification Code
Energy Losses (industrial and residential):525.4 ; Electric Batteries:702.1 ; Nanotechnology:761 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Organic Polymers:815.1.1 ; Materials Science:951
Important Publications
ESI Highly Cited Papers ; ESI Hot Papers ; ESI Hot Papers ; ESI Hot Papers
SUSTech Authorship
First ; Corresponding
ESI Research Field
CHEMISTRY
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:136
Document TypeJournal Article
Identifierhttps://kc.sustech.edu.cn/handle/2SGJ60CL/44710
DepartmentDepartment of Materials Science and Engineering
Affiliation
1.Southern Univ Sci & Technol SUSTech, Dept Mat Sci & Engn, 1088 Xueyuan Rd, Shenzhen 518055, Guangdong, Peoples R China
2.Southern Univ Sci & Technol SUSTech, Shenzhen Key Lab Printed Organ Elect, 1088 Xueyuan Rd, Shenzhen 518055, Guangdong, Peoples R China
3.HKUST, Dept Chem, Chinese Natl Engn Res Ctr Tissue Restorat & Recon, Kowloon, Clear Water Bay, Hong Kong, Peoples R China
4.HKUST, Hong Kong Branch, Chinese Natl Engn Res Ctr Tissue Restorat & Recon, Kowloon, Clear Water Bay, Hong Kong, Peoples R China
5.Linkoping Univ, Dept Phys Chem & Biol IFM, SE-58183 Linkoping, Sweden
6.Chinese Univ Hong Kong, Dept Phys, Hong Kong, Peoples R China
7.eFlexPV Ltd, Room 228,Block 11,121 Hu Di Pai,Guanhu St, Shenzhen, Peoples R China
First Author AffilicationSouthern University of Science and Technology
Corresponding Author AffilicationDepartment of Materials Science and Engineering;  Southern University of Science and Technology
First Author's First AffilicationDepartment of Materials Science and Engineering
Recommended Citation
GB/T 7714
Sun, Huiliang,Liu, Tao,Yu, Jianwei,et al. A monothiophene unit incorporating both fluoro and ester substitution enabling high-performance donor polymers for non-fullerene solar cells with 16.4% efficiency[J]. ENERGY & ENVIRONMENTAL SCIENCE,2019,12(11):3328-3337.
APA
Sun, Huiliang.,Liu, Tao.,Yu, Jianwei.,Lau, Tsz-Ki.,Zhang, Guangye.,...&Yan, He.(2019).A monothiophene unit incorporating both fluoro and ester substitution enabling high-performance donor polymers for non-fullerene solar cells with 16.4% efficiency.ENERGY & ENVIRONMENTAL SCIENCE,12(11),3328-3337.
MLA
Sun, Huiliang,et al."A monothiophene unit incorporating both fluoro and ester substitution enabling high-performance donor polymers for non-fullerene solar cells with 16.4% efficiency".ENERGY & ENVIRONMENTAL SCIENCE 12.11(2019):3328-3337.
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