Thiophene pi-bridge effect on bulky side-chained benzodithiophene-based photovoltaic polymers
Description
Recently, we have used terthiophene side chain to modify benzo[1,2-b:4,5-b′]dithiophene (BDT) to form novel building block for BDT polymers. In this paper, this building block is used to copolymerized with thieno[3,4-c]pyrrole-4,6-dione (TPD) and thieno[3,4-b]thiophene (TT). This building block and TPD- or TT-based polymers (P1 and P3) show high open circuit voltage (VOC) (ca. 0.9-0.95 V) and low energy loss (Eg-eVOC) in solar cells devices compared with similar polymers without bulky side chain. We further introduce thiophene π bridge into these polymers backbone to form two other polymers (P2 and P4). We find this thiophene π bridge does contribute to this bulky side chained benzodithiophene polymer photovoltaic performances, especially for power conversion efficiencies (PCEs). The polymer solar cells (PSCs) performances are moderate in this article due to the serious aggregation in the PSCs active layer.
Impact and interest:
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| ID Code: | 247722 |
|---|---|
| Item Type: | Contribution to Journal (Journal Article) |
| Refereed: | Yes |
| Measurements or Duration: | 8 pages |
| Keywords: | bulky side chain, copolymerization, energy loss, high performance polymers, morphology, polymer solar cells, renewable resources, thin films, thiophene π bridge |
| DOI: | 10.1002/pola.28017 |
| ISSN: | 0887-624X |
| Pure ID: | 165831452 |
| Funding Information: | The authors gratefully acknowledge financial support from the NSFC (21274134, 21274161, 51173199, 51573205), and Shandong Province Postdoc Foundation (201301007). |
| Copyright Owner: | 2015 Wiley Periodicals, Inc. |
| Copyright Statement: | This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au |
| Deposited On: | 02 Apr 2024 05:39 |
| Last Modified: | 03 Apr 2024 01:35 |
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