title: Enhanced performance of organic photovoltaic cells fabricated with a methyl thiophene-3-carboxylate-containing alternating conjugated copolymer.
abstract: A new donor-acceptor copolymer, containing benzodithiophene (BDT) and methyl thiophene-3-carboxylate (3MT) units, is designed and synthesized for polymer solar cells (PSCs). The 3MT unit is used as an electron acceptor unit in this copolymer to provide a lower highest occupied molecular orbital (HOMO) level for obtaining polymer solar cells with a higher open-circuit voltage (VOC). The resulting bulk heterojunction PSC made of the copolymer and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) exhibits a power conversion efficiency (PCE) up to 4.52%, a short circuit current (JSC) of 10.5 mA · cm-(2), and a VOC of 0.86 V.
authors: Institute for Lasers, Photonics and Biophotonics, Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY 14260, USA.
authors: Min Ju
authors: MJ
authors: Cho
authors: Institute for Lasers, Photonics and Biophotonics, Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY 14260, USA.
authors: Jangwon
authors: J
authors: Seo
authors: Department of Chemistry, Research Institute for Natural Sciences, Korea University, Seoul 136-701, Korea.
authors: Kyung Hwan
authors: KH
authors: Kim
authors: Department of Chemistry, Research Institute for Natural Sciences, Korea University, Seoul 136-701, Korea.
authors: Dong Hoon
authors: DH
authors: Choi
authors: Institute for Lasers, Photonics and Biophotonics, Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY 14260, USA. pnprasad@buffalo.edu.
authors: Paras N
authors: PN
authors: Prasad
mesh_terms: D012993:Solar Energy; D013844:Thiazoles / Q000737:chemistry*
chemical_list: D013844:Thiazoles