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Synthesis of bistriphenylamine- and benzodithiophene-based random conjugated polymers for organic photovoltaic applications
Date
2017-11-15
Author
CETIN, Asli
ISTANBULLUOGLU, Cagla
HACIOGLU, Serife Ozdemir
CEVHER, ŞEVKİ CAN
Toppare, Levent Kamil
Çırpan, Ali
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In this study, donor-acceptor random polymers containing benzotriazole acceptor and bistriphenylamine and benzodithiophene donors, P1 and P2, were successfully synthesized by Stille coupling polymerization. The effect of bistriphenylamine moiety and thiophene -conjugated linker on electrochemical, spectroelectrochemical, and optical behaviors of the polymers were investigated. Optoelectronic properties and photovoltaic performance of the polymers were examined under the illumination of AM 1.5G, 100 mWcm(-2). The polymers were characterized by cyclic voltammetry, UV-Vis-NIR absorption spectroscopy, gel permeation chromatography. HOMO/LUMO energy levels of P1 and P2 were calculated as -5.47 eV/-3.41 eV and -5.43 eV/-3.27 eV, respectively. Bulk heterojunction type solar cells were constructed using blends of the polymers (donor) and [6,6]-phenyl C-71 butyric acid methyl ester (PC71BM) (acceptor). Photovoltaic studies showed that the highest power conversion efficiency of these photovoltaic devices were recorded as 3.50% with open circuit voltage; 0.79 V, short circuit current; 9.45 mAcm(-2), fill factor; 0.53 for P1:PC71BM (1:2, w/w) in 3% o-dichlorobenzene (o-DCB) solution and 3.15% with open circuit voltage; 0.75 V, short circuit current; 8.59 mAcm(-2), fill factor; 0.49 for P2:PC71BM (1:2, w/w) in 2% chlorobenzene (CB) solution. (C) 2017 Wiley Periodicals, Inc.
Subject Keywords
Synthesis
,
Random conjugated polymers
,
Electrochemistry
,
Conjugated polymers
,
Bulk heterojunction solar cell
,
Bistriphenylamine
,
Benzotriazole
,
Benzodithiophene
URI
https://hdl.handle.net/11511/36890
Journal
Journal of Polymer Science, Part A: Polymer Chemistry
DOI
https://doi.org/10.1002/pola.28752
Collections
Department of Chemistry, Article
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A. CETIN, C. ISTANBULLUOGLU, S. O. HACIOGLU, Ş. C. CEVHER, L. K. Toppare, and A. Çırpan, “Synthesis of bistriphenylamine- and benzodithiophene-based random conjugated polymers for organic photovoltaic applications,”
Journal of Polymer Science, Part A: Polymer Chemistry
, pp. 3705–3715, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36890.