Structural Variation of Donor-Acceptor Copolymers Containing Benzodithiophene with Bithienyl Substituents to Achieve High Open Circuit Voltage in Bulk Heterojunction Solar Cells
dc.contributor.ISNI | 0000 0003 8371 1336 (Gnade, BE) | |
dc.contributor.LCNA | 00049719 (Gnade, BE) | |
dc.contributor.VIAF | 55039821 (Stefan, MC) | |
dc.contributor.author | Kularatne, Ruvini S. | en_US |
dc.contributor.author | Taenzler, Ferdinand J. | en_US |
dc.contributor.author | Magurudeniya, Harsha D. | en_US |
dc.contributor.author | Du, Jia | en_US |
dc.contributor.author | Murphy, John W. | en_US |
dc.contributor.author | Sheina, E. E. | en_US |
dc.contributor.author | Gnade, Bruce E. | en_US |
dc.contributor.author | Biewer, Michael C. | en_US |
dc.contributor.author | Stefan, Mihaela C. | en_US |
dc.contributor.utdAuthor | Gnade, Bruce E. | en_US |
dc.contributor.utdAuthor | Biewer, Michael C. | en_US |
dc.contributor.utdAuthor | Stefan, Mihaela C. | en_US |
dc.date.accessioned | 2014-07-23T21:05:14Z | |
dc.date.available | 2014-07-23T21:05:14Z | |
dc.date.created | 2013-11-06 | |
dc.date.issued | 2013-11-06 | en_US |
dc.date.submitted | 2013-09-13 | en_US |
dc.description | Supplementary data is available at the publisher's site. | en_US |
dc.description.abstract | Three new donor-acceptor copolymers P1, P2, and P3 were synthesized with benzodithiophene with bithienyl substituents as the donor and 5,6-difluorobenzo[c][1,2,5]thiadiazole, 4,7-di(thiophen-2-yl)benzo[c][1,2,5] thiadiazole, and 5,6-difluoro-4,7-di(thiophen-2-yl)benzo[c][1,2,5]thiadiazole as the acceptors, respectively. The insertion of thiophene spacer between the donor and the acceptor broadened the absorption of the polymers P2 and P3 and resulted in a red shift of ~30 nm as compared to that of the polymer P1. However, the inclusion of fluorine atoms on the polymer had detrimental effects on the photovoltaic properties of the polymers. The synthesized donor-acceptor polymers were tested in bulk heterojunction (BHJ) solar cells with [6,6]-phenyl C71 butyric acid methyl ester (PC71BM) acceptor. Polymer P2 gave a PCE of 3.52% with PC71BM in which the active layer was prepared in chloroform with 3% v/v 1,8-diiodooctane (DIO) additive. The effect of fluorine substitution and thiophene group insertion on the UV/Vis absorbance, photovoltaic performances, morphology, and charge carrier mobilities for the polymers are discussed. | en_US |
dc.description.sponsorship | "Financial support for this project from NSF (Career DMR-0956116) and Welch Foundation (AT-1740) is gratefully acknowledged. We gratefully acknowledge the NSF-MRI grant (CHE-1126177) used to purchase the Bruker Avance III 500 NMR instrument." | en_US |
dc.identifier.bibliographicCitation | Kularatne, R. S., F. J. Taenzler, H. D. Magurudeniya, J. Du, et al. 2013. "Structural variation of donor-acceptor copolymers containing benzodithiophene with bithienyl substituents to achieve high open circuit voltage in bulk heterojunction solar cells." Journal of Materials Chemistry A 1(48): 15535-15543 | en_US |
dc.identifier.issn | 2050-7488 | en_US |
dc.identifier.issue | 48 | en_US |
dc.identifier.uri | http://hdl.handle.net/10735.1/3789 | |
dc.identifier.volume | 1 | en_US |
dc.language.iso | en | en_US |
dc.publisher | Royal Soc Chemistry | en_US |
dc.relation.uri | http://dx.doi.org/10.1039/c3ta13686h | |
dc.rights | ©2013 The Royal Society of Chemistry. This article may not be further made available or distributed. | en_US |
dc.source.journal | Journal of Materials Chemistry A | en_US |
dc.title | Structural Variation of Donor-Acceptor Copolymers Containing Benzodithiophene with Bithienyl Substituents to Achieve High Open Circuit Voltage in Bulk Heterojunction Solar Cells | en_US |
dc.type | Text | en_US |
dc.type.genre | article | en_US |
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