Dithienylcyclopentadienone derivative-co-benzothiadiazole: An alternating copolymer for organic photovoltaics
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| Title: | Dithienylcyclopentadienone derivative-co-benzothiadiazole: An alternating copolymer for organic photovoltaics |
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| Authors: | Ranjith, K.1, Swathi, S.K.1, Kumar, Prajwal1, Ramamurthy, Praveen C. praveen@materials.iisc.ernet.in |
| Source: | Solar Energy Materials & Solar Cells. Mar2012, Vol. 98, p448-454. 7p. |
| Subject Terms: | *Photovoltaic power generation, *Organic compounds, *Palladium, *Solution (Chemistry), Copolymers, Coupling reactions (Chemistry), Light absorption, Band gaps |
| Abstract: | Abstract: Alternating copolymer of 7,9-di(thiophen-2-yl)-8H-cyclopenta[a]acenaphthylen-8-one-co-benzothiadiazole was synthesized by palladium(0) catalyzed Stille coupling reaction. This solution processable copolymer shows an excellent thermal stability and has a broad absorption range from 300 to 800nm with a band gap of about 1.51eV. High LUMO energy level and low band gap of the synthesized copolymers suggest that, this copolymer will be a suitable donor material for use in an organic photovoltaic device. Photovoltaic devices were fabricated from the blend of copolymer and phenyl-C61-butyric acid methyl ester as the active material. [Copyright &y& Elsevier] |
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| Database: | GreenFILE |
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