2017
DOI: 10.1016/j.dyepig.2017.01.058
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Two new medium bandgap asymmetric copolymers based on thieno[2,3-f]benzofuran for efficient organic solar cells

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Cited by 13 publications
(4 citation statements)
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“…The Zou group designed and synthesized a series of TBF-based conjugated polymers and applied them to OSCs. [40][41][42][97][98][99] They 40 synthesized and characterized a novel alkylthiophene substituted TBF-based asymmetric polymer PTBFTDTBT (Fig. 9).…”
Section: Polymers Based On Asymmetric Tbfmentioning
confidence: 99%
See 1 more Smart Citation
“…The Zou group designed and synthesized a series of TBF-based conjugated polymers and applied them to OSCs. [40][41][42][97][98][99] They 40 synthesized and characterized a novel alkylthiophene substituted TBF-based asymmetric polymer PTBFTDTBT (Fig. 9).…”
Section: Polymers Based On Asymmetric Tbfmentioning
confidence: 99%
“…After optimizing the morphology, 6.80% PCE of polymer TBFPF-BT-based devices is obtained, which is obviously better than that of TBFPF-BO-based devices (PCE = 5.98%). In 2017, they 97,99 polymerized alkoxyphenyl and alkoxy TBF and BDD to form new polymers TBF-BDD and TBFO-BDD (Fig. 9).…”
Section: Polymers Based On Asymmetric Tbfmentioning
confidence: 99%
“…To research the effect of side chains on the photovoltaic performance of TBF‐based polymers, they synthesized two medium bandgap copolymers PTBF8 and PTBF9 in which using different side chains substituted TBF as donor units and BDD as acceptor unit. [ 275 ] Compared to PTBF9 , PTBF8 with alkoxyphenyl showed red‐shifted absorption and deeper HOMO level, as well as higher charge mobility. As a result, the OSCs of PTBF8 exhibited a higher PCE of 6.32% than that of PTBF9 .…”
Section: Benzodichalcogenophene‐based Materials Used In Oscsmentioning
confidence: 99%
“…The symmetrical units, such as BDT and indacenodithiophene (IDT), etc., have been considered as the most promising building blocks of the highly efficient conjugated polymers for PSCs with the current state-of-the-art PCEs of up to 14%. , However, recent studies have demonstrated that the conjugated polymers with asymmetrical building blocks can also achieve the promising and even better photovoltaic performances compared to those of the symmetrical counterparts. For examples, Yang et al found that BDT polymers with asymmetrical alkoxyl and aromatic substituents could achieve PCE exceeding 9% by combining both advantages of the substituents. , As one of the symmetric BDT’s analogies, the asymmetrical thieno­[2,3- f ]­benzofuran (TBF) unit has attracted wide research attention as a promising donor unit in the donor–acceptor type polymer. Various medium and narrow bandgap TBF-based polymers have been developed with acceptor units such as benzodithiophene-4,8-dione (BDD) and show the PCEs of up to 6.80% in fullerene-based PSCs and up to 7.13% in NF-PSCs. However, these polymers showed the large absorption overlaps with most of the efficient NF acceptors, which is not beneficial for harvesting the solar photons. Therefore, developing efficient wide bandgap donor polymers has become one of the important strategies in pursuing the remarkable NF-PSCs.…”
mentioning
confidence: 99%