Dithienylcyclopentadienone derivative-co-benzothiadiazole: An alternating copolymer for organic photovoltaics

作者：Ranjith K; Swathi S K; Kumar Prajwal; Ramamurthy Praveen C^*

来源：Solar Energy Materials and Solar Cells, 2012, 98: 448-454.

DOI：10.1016/j.solmat.2011.11.034

• Conducting polymer
• Alternating copolymer
• Organic solar cells
• Bulkheterojunction

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 800 nm with a band gap of about 1.51 eV. 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.

• 出版日期2012-3