Impact of strength and size of donors on the optoelectronic properties of D–π–A sensitizers

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dc.identifier.uri Sivanadanam, J. Ganesan, P. Gao, Peng Nazeeruddin, Md. K. Emeline, Alexei Bahnemann, Detlef W. Rajalingam, R. 2016-12-06T07:33:04Z 2016-12-06T07:33:04Z 2016
dc.identifier.citation Sivanadanam, J.; Ganesan, P.; Gao, Peng; Nazeeruddin, Md. K.; Emeline, Alexei et al.: Impact of strength and size of donors on the optoelectronic properties of D–π–A sensitizers. In: RSC Advances 6 (2016), Nr. 44, S. 37347-37361. DOI:
dc.description.abstract A series of carbazole based sensitizers with either phenyl based donors (TBC, TMC, OMC, PC, TBR, TMR, OMR and PR) or aryl amine based donors (OMNC, CNC and HNC) as well as one without a donor group (CC) have been synthesized to understand the influence of the strength of the donor moiety on the optical, electrochemical and photovoltaic properties. Two different acceptor moieties such as cyano acrylic acid and rhodanine acetic acid were introduced and evaluated. Different substituents on the phenyl group have a significant impact on the light harvesting ability of the sensitizers. Among phenyl based donors, anisole based carbazole (OMC) shows the highest short circuit current (JSC) of 4.96 mA cm−2 with overall power conversion efficiency (PCE) of 2.69%. In the case of the sensitizers with aryl amine based donors, the increasing bulkiness of the donor group lead to increasing open circuit potential. Transient photocurrent and photovoltage measurements signify the importance of a bulky donor fragment in determining the open circuit potential of the dyes. Sensitizers with hexyloxy substituted phenyl amine as the donor group shows a JSC of 6.84 mA cm−2 with PCE of 3.33%. The overall investigation provides vital information about the influence of donor groups on the optoelectronic properties of the sensitizers for its photovoltaic applications. eng
dc.description.sponsorship EU/FP7/2007-2013/604032
dc.description.sponsorship Government of the Russian Federation
dc.language.iso eng
dc.publisher Cambridge : Royal Society of Chemistry
dc.relation.ispartofseries RSC Advances 6 (2016), Nr. 44
dc.rights CC BY 3.0 Unported
dc.subject Photoactive Nanocomposite Materials eng
dc.subject Molecular Engineering eng
dc.subject.ddc 540 | Chemie ger
dc.title Impact of strength and size of donors on the optoelectronic properties of D–π–A sensitizers eng
dc.type Article
dc.type Text
dc.relation.essn 2046-2069
dc.bibliographicCitation.issue 44
dc.bibliographicCitation.volume 6
dc.bibliographicCitation.firstPage 37347
dc.bibliographicCitation.lastPage 37361
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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