Novel pendent thiophene side-chained benzodithiophene for polymer solar cells
Description
In this article, pendent thiophene (2-butyl-5-octylthiophene) side chain is used to modify the backbone of the polymers containing benzo[1,2-b:4,5-b′]dithiophene (BDT) and thieno[3,4-c]pyrrole-4,6-dione (TPD). Compared with the dodecyloxy side-chained polymer (P1), pendent thiophene-based polymers (P2 and P3) show similar number-average molecular weight (Mn), polydispersity index, thermal stability (Td ∼ 334-337°C), and optical band gaps (Egopt) (∼1.8 eV). Polymer (P2)-based BDT with pendent thiophene and ethylhexyl-modified TPD shows relatively low-lying HOMO energy level (-5.52 eV) and nearly 1 V high open circuit voltage (VOC). The polymer solar cell devices based on three copolymers show power conversion efficiencies from 2.01% to 4.13%. The hole mobility of these polymers tested by space charge limited current method range from 3.4 × 10-4 to 9.2 × 10-4 cm2V-1s-1.
Impact and interest:
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| ID Code: | 247719 |
|---|---|
| Item Type: | Contribution to Journal (Journal Article) |
| Refereed: | Yes |
| Measurements or Duration: | 9 pages |
| Keywords: | benzo[1,2-b:4,5-b′]dithiophene, pendent thiophene, polymer solar cells, thieno[3,4-c]pyrrole-4,6-dione |
| DOI: | 10.1002/pola.27585 |
| ISSN: | 0887-624X |
| Pure ID: | 165831832 |
| Funding Information: | The authors gratefully acknowledge financial support from the NSFC (21274134, 21274161, and 51173199), New Century Excellent Talents in University (NCET-11-0473), 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 05:36 |
| Last Modified: | 03 Apr 2024 01:20 |
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