1. 4H-1,2,6-Thiadiazine-containing donor–acceptor conjugated polymers: synthesis, optoelectronic characterization and their use in organic solar cells
- Author
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Chochos, Christos L., Kalogirou, Andreas S., Ye, Tengling, Tatsi, Elisavet, Katsouras, Athanasios, Zissimou, Georgia A., Gregoriou, Vasilis G., Avgeropoulos, Apostolos, Koutentis, Panayiotis A., Zissimou, Georgia A. [0000-0003-4821-9469], Kalogirou, Andreas S. [0000-0002-5476-5805], Chochos, Christos L. [0000-0002-7783-157X], and Koutentis, Panayiotis A. [0000-0002-4652-7567]
- Subjects
chemistry.chemical_classification ,Fullerene ,Materials science ,Organic solar cell ,business.industry ,02 engineering and technology ,General Chemistry ,Polymer ,Conjugated system ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Acceptor ,Polymer solar cell ,0104 chemical sciences ,chemistry ,Materials Chemistry ,Optoelectronics ,0210 nano-technology ,business ,Short circuit ,HOMO/LUMO - Abstract
π-Conjugated donor–acceptor (D–A) polymers containing electron withdrawing non-S-oxidized 4H-1,2,6-thiadiazines and electron donating (het)aryl-substituted indacenodithiophenes (IDTs) were prepared and used in organic solar cell (OSC) devices with [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) as the fullerene acceptor. The non-S-oxidized 4H-1,2,6-thiadiazine containing polymers were wide bandgap absorbers (Eoptg 1.80–1.95 eV) with low-lying highest occupied molecular orbital energy levels (EHOMO −5.5 to −6.1 eV) affording high open circuit voltages (Vocs 0.82–0.96 V) for polymer:fullerene bulk heterojunction (BHJ) OSCs. Owing to enhanced short circuit currents (Jscs) and fill factors (FFs), the 1,2,6-thiadiazin-4(H)-one-based polymers had significantly higher performances (up to 3.83%) vs. the N-(perfluorophenyl)-1,2,6-thiadiazin-4(H)-imine based-polymers (up to 1.37%). 6 14 3658 3667
- Published
- 2018
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