Effect of thiophene, 3-hexylthiophene, selenophene, and Thieno[3,2-b]thiophene spacers on OPV device performance of novel 2,1,3-benzothiadiazole based alternating copolymers

Zeytun Karaman, Cansu
Göker, Seza
Şahin, Ümmügülsüm
Hacıoğlu Özdemir, Şerife
Taşkaya Aslan, Sultan
Hacıefendioğlu, Tuğba
Hızalan, Gönül
Yıldırım, Erol
Çırpan, Ali
Toppare, Levent Kamil
Four novel alternating copolymers bearing 5-fluoro-6-((2-octyldodecyl)oxy)benzo[c][1,2,5]thiadiazole as a strong acceptor unit and 9,9-dioctylfluorene as a strong donor unit with bridging units namely, thienothiophene, selenophene, 3-hexylthiophene, and thiophene were designed and synthesized. The polymers were characterized via 1H NMR spectroscopy, and weight average molecular weights were reported via gel permeation chromatography (GPC). For synthesized novel polymers, the bulk heterojunction solar cells were constructed. Besides, the effects of bridging units on electronic, optical, photovoltaic, and morphological properties were investigated. Among the polymers, the thienothiophene containing polymer P1 exhibited the highest PCE as 4.25% under the illumination of AM 1.5 G with 100 mW/cm2.
Journal Of Electroanalytical Chemistry


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Citation Formats
C. Zeytun Karaman et al., “Effect of thiophene, 3-hexylthiophene, selenophene, and Thieno[3,2-b]thiophene spacers on OPV device performance of novel 2,1,3-benzothiadiazole based alternating copolymers,” Journal Of Electroanalytical Chemistry, pp. 115483–11548316, 2021, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/91141.