4H-1, 2, 6-Thiadiazin-4-one-containing small molecule donors and additive effects on their performance in solution-processed organic solar cells. Issue 10 (29th January 2015)

• Record Type: Journal Article
• Authors: Hermerschmidt, Felix; Kalogirou, Andreas S.; Min, Jie; Zissimou, Georgia A.; Tuladhar, Sachetan M.; Ameri, Tayebeh; Faber, Hendrik; Itskos, Grigorios; Choulis, Stelios A.; Anthopoulos, Thomas D.; Bradley, Donal D. C.; Nelson, Jenny; Brabec, Christoph J.; Koutentis, Panayiotis A.
• Is Part Of: Journal of materials chemistry. Volume 3:Issue 10(2015)
• Page Start: 2358
• Page End: 2365
• Publication Date: 2015-01-29
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c4tc02931c
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Donor–acceptor–donors containing 4 H -1, 2, 6-thiadiazinone are presented and used in organic solar cells. Abstract : The optical, electrochemical, morphological and transport properties of a series of thiadiazinone (acceptor) and (thienyl)carbazoles (donor) containing π-extended donor–acceptor–donors (D–A–D) are presented. Systematic variations in the number of the thienyl units, the choice of branched or straight alkyl side chains and the use of a processing additive demonstrate their use as electron donors in bulk heterojunction solar cells blended with fullerene acceptors. The best power conversion efficiency (PCE) of 2.7% is achieved by adding to the D–A–D3 : fullerene blend a polydimethylsiloxane (PDMS) additive, that improves the morphology and doubles the hole mobility within the D–A–D : fullerene blend.