Chen, Y., Yan, Y., Du, Z., Bao, X., Liu, Q., Roy, V.A.L. , Sun, M., Yang, R. and Lee, C. S. (2014) Two-dimensional benzodithiophene and benzothiadiazole based solution-processed small molecular organic field-effect transistors & solar cells. Journal of Materials Chemistry C, 2(20), pp. 3921-3927. (doi: 10.1039/c4tc00086b)
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Abstract
Benzodithiophene (BDT) and benzothiadiazole (BT) based small molecules have been synthesized through palladium-catalyzed Stille coupling reactions. The molecules with and without the conjugated thiophene side-chain were named as DRTBTTBDTT (2D) and DRTBTTBDT (1D), respectively. These molecules exhibited an optical band gap of around 1.8 eV. Solution-processed thin films of 1D and 2D showed that the conjugated thiophene side-chain oriented to produce a uniform 2D structure, which led to a relatively high hole mobility of 0.016 cm2 V−1 s−1, and this was one of the highest values for solution-processed small-molecule donors in organic solar cells (OSCs). With proper engineering of energy levels, the organic solar cells based on DRTBTTBDTT (2D) as donors exhibited a high Voc of around 0.9 V.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Vellaisamy, Professor Roy |
| Authors: | Chen, Y., Yan, Y., Du, Z., Bao, X., Liu, Q., Roy, V.A.L., Sun, M., Yang, R., and Lee, C. S. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Journal of Materials Chemistry C |
| Publisher: | Royal Society of Chemistry |
| ISSN: | 2050-7526 |
| ISSN (Online): | 2050-7534 |
| Published Online: | 04 March 2014 |
| Related URLs: |
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