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p–π Conjugated Polymers Based on Stable Triarylborane with n‐Type Behavior in Optoelectronic Devices
- Source :
- Angewandte Chemie International Edition. 57:2183-2187
- Publication Year :
- 2018
- Publisher :
- Wiley, 2018.
-
Abstract
- p-π conjugation with embedded heteroatoms offers unique opportunities to tune the electronic structure of conjugated polymers. An approach is presented to form highly electron-deficient p-π conjugated polymers based on triarylboranes, demonstrate their n-type behavior, and explore device applications. By combining alternating [2,4,6-tris(trifluoromethyl)phenyl]di(thien-2-yl)borane (FBDT) and electron-deficient isoindigo (IID)/pyridine-flanked diketopyrrolopyrrole (DPPPy) units, we achieve low-lying lowest unoccupied molecular orbital (LUMO) and highest occupied molecular orbital (HOMO) energy levels, high electron mobilities, and broad absorptions in the visible region. All-polymer solar cells with these polymers as electron acceptors exhibit encouraging photovoltaic performance with power conversion efficiencies of up to 2.83 %. These results unambiguously prove the n-type behavior and demonstrate the photovoltaic applications of p-π conjugated polymers based on triarylborane.
- Subjects :
- chemistry.chemical_classification
Materials science
Trifluoromethyl
Heteroatom
General Medicine
02 engineering and technology
General Chemistry
Polymer
Electronic structure
Electron acceptor
Borane
Conjugated system
010402 general chemistry
021001 nanoscience & nanotechnology
Photochemistry
01 natural sciences
Catalysis
0104 chemical sciences
chemistry.chemical_compound
chemistry
0210 nano-technology
HOMO/LUMO
Subjects
Details
- ISSN :
- 15213773 and 14337851
- Volume :
- 57
- Database :
- OpenAIRE
- Journal :
- Angewandte Chemie International Edition
- Accession number :
- edsair.doi.dedup.....316752ad2b5ce038b2a494ca8f8c25eb