Synthesis of a benzotriazole bearing alternating copolymer for organic photovoltaic applications

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dc.authorid0000-0003-2212-199X
dc.contributor.authorİstanbulluoğlu, Çağla
dc.contributor.authorGöker, Seza
dc.contributor.authorHizalan, Gönül
dc.contributor.authorÖzdemir Hacıoğlu, Şerife
dc.contributor.authorArslan Udum, Yasemin
dc.contributor.authorYıldız, Dilber Esra
dc.contributor.authorÇırpan, Ali
dc.contributor.authorToppare, Levent Kamil
dc.date.accessioned2019-05-13T09:02:37Z
dc.date.available2019-05-13T09:02:37Z
dc.date.issued2015
dc.departmentHitit Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümü
dc.description.abstractA low band gap donor–acceptor (D–A) copolymer PTBTBDT, namely, poly(2-dodecyl-4,7-di(thiophen-2-yl)-2H-benzo[d][1,2,3]triazole-alt-4,8-bis(2-ethylhexyloxy)benzo[1,2-b:4,5-b?]dithiophene), was designed and synthesized via a Pd-catalyzed Stille polycondensation reaction. The polymer was characterized using 1H NMR spectroscopy, UV-vis absorption spectroscopy, cyclic voltammetry, and gel permeation chromatography (GPC). PTBTBDT has good solubility in common organic solvents, good thermal stability, broad absorption, low band gap and exhibits not only high hole mobility but also moderate photovoltaic properties. PTBTBDT displays broad absorption in the wavelength range from 300 nm to 630 nm, and its HOMO and LUMO energy levels were calculated to be ?4.98 eV and ?3.34 eV, respectively. Bulk heterojunction solar cells were fabricated using PTBTBDT as the electron donor and PC70BM as the acceptor. The device exhibits a power conversion efficiency of 2.12% with a current density of 5.45 mA cm?2, an open-circuit voltage of 0.72 V, and a fill factor of 54% under the illumination of AM 1.5 G, 100 mW cm?2. Under similar device fabrication conditions, the PTBTBDT based device showed considerably improved efficiency among its previously synthesized counterparts, i.e. PBDTDTBTz and PBDTBTz based devices, which have 1.7% and 1.4% efficiencies, respectively. The hole mobility of the PTBTBDT?:?PC70BM (1?:?2 w/w) blend reached up to 1.47 × 10?3 cm2 V?1 s?1 as calculated by the space-charge-limited current (SCLC) method. By side-chain engineering, this study demonstrates a good example of tuning the absorption range, energy level, charge transport, and photovoltaic properties of polymers.
dc.identifier.citationİstanbulluoğlu, Ç., Göker, S., Hizalan, G., Özdemir Hacıoğlu, S., Arslan Udum, Y., Yıldız, D. E., Çırpan, A., Toppare, L. (2015). Synthesis of a benzotriazole bearing alternating copolymer for organic photovoltaic applications. New Journal of Chemistry, 39(8), 6623-6630.
dc.identifier.doi10.1039/c5nj01026h
dc.identifier.endpage6630en_US
dc.identifier.issn1144-0546
dc.identifier.issue8en_US
dc.identifier.scopusqualityQ2
dc.identifier.startpage6623en_US
dc.identifier.urihttps://doi.org/10.1039/c5nj01026h
dc.identifier.urihttps://hdl.handle.net/11491/1290
dc.identifier.volume39en_US
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.relation.ispartofNew Journal of Chemistry
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subject[Belirlenecek]en_US
dc.titleSynthesis of a benzotriazole bearing alternating copolymer for organic photovoltaic applications
dc.typeArticle

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