Near-infrared response thienoisoindigo-based small molecule for solution-processed bulk-heterojunction solar cells
Description
5′-Hexyl-2,2′-bithiophene end-capped thienoisoindigo-based small molecule (TIDO2T) is synthesized by Stille coupling reaction. The TIDO2T exhibits good solubility in common organic solvents such as THF, toluene, dichlorobenzene and chloroform. The UV-vis absorption spectrum of TIDO2T shows wide absorption between 427 nm and 871 nm in thin solid film, and the optical band-gap calculated from absorption onset was 1.42 eV. Bulk heterojunctions (BHJ) solar cell was fabricated with TIDO2T as the donor and 6,6-phenyl-C 61-butyric acid methyl ester (PC61BM) as the acceptor by simple solution spin-coating processing. The device obtained a power conversion efficiency of 1.14% with VOC 0.44 V, JSC 7.76 mA cm -2 and FF 33% under AM 1.5G solar simulator. The external quantum efficiency (EQE) curve extends to near-infrared region (around 900-1000 nm).
Impact and interest:
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| ID Code: | 247746 |
|---|---|
| Item Type: | Contribution to Journal (Journal Article) |
| Refereed: | Yes |
| Measurements or Duration: | 6 pages |
| Keywords: | Near-infrared, Organic solar cells, Small molecule, Solution-processed, Thienoisoindigo |
| DOI: | 10.1016/j.synthmet.2013.10.017 |
| ISSN: | 0379-6779 |
| Pure ID: | 165832780 |
| Funding Information: | The authors are deeply grateful to the National Natural Science Foundation of China (Project no. 21274134, 51173199), 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: | 2013 Elsevier B.V. |
| 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: | 03 Apr 2024 03:31 |
| Last Modified: | 04 Apr 2024 23:42 |
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