Hyperconjugated side chained benzodithiophene and 4,7-di-2-thienyl-2,1,3- benzothiadiazole based polymer for solar cells
Description
A novel donor-acceptor (D-A) copolymer (P3TBDTDTBT), including hyperconjugated side chained benzodithiophene as a donor and 4,7-di-2-thienyl-2,1,3-benzothiadiazole (DTBT) as an acceptor, was designed and synthesized. Due to the introduction of the hyperconjugated side chain, the resultant polymer exhibited good thermal stability with a high decomposition temperature of 437°C, a low band-gap of 1.67 eV with an absorption onset of 742 nm in the solid film, and a deep highest occupied molecular orbital (HOMO) energy level of -5.26 eV. Finally, the polymer solar cell (PSC) device based on this polymer and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) showed the best power conversion efficiency (PCE) of 3.57% with an open-circuit voltage (Voc) of 0.78 V, a short-circuit current density (J sc) of 8.83 mA cm-2 and a fill factor (FF) of 53%.
Impact and interest:
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| ID Code: | 247726 |
|---|---|
| Item Type: | Contribution to Journal (Journal Article) |
| Refereed: | Yes |
| Measurements or Duration: | 7 pages |
| DOI: | 10.1039/c3py01529g |
| ISSN: | 1759-9954 |
| Pure ID: | 165832117 |
| Funding Information: | The authors are deeply grateful to the National Natural Science Foundation of China (Project no. 21274134, 21202181, 51173199, 61107090), the Ministry of Science and Technology of China (2010DFA52310), New Century Excellent Talents in University (NCET-11-0473), Department of Science and Technology of Shandong Province (2010GGC10345), and Qingdao Municipal Science and Technology Program (11-2-4-22-hz, 13-1-4-200-jch) for financial support. |
| Copyright Owner: | Consult author(s) regarding copyright matters |
| 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 06:15 |
| Last Modified: | 03 Apr 2024 01:57 |
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