Synthesis and Photovoltaic Properties of Quinoxaline-Based Alternating Copolymers for High-Efficiency Bulk-Heterojunction Polymer Solar Cells

Autor:	Jong-Cheol Lee, Won Suk Shin, Sang Kyu Lee, In-Nam Kang, Jung Min Cho, Woo-Hyung Lee, Sang-Jin Moon, Jin-Uk Park, Song Ju Park
Rok vydání:	2011
Předmět:	chemistry.chemical_classification Electron mobility Materials science Polymers and Plastics Organic Chemistry Photovoltaic system Polymer Polymer solar cell Inorganic Chemistry chemistry.chemical_compound Quinoxaline chemistry Polymer chemistry Materials Chemistry Side chain Copolymer Alkyl
Zdroj:	Macromolecules. 44:5994-6001
ISSN:	1520-5835 0024-9297
Popis:	A series of quinoxaline-based copolymers, namely, poly[N-9″-heptadecanyl-2,7-carbazole-alt-5,5-(5′,8′-di-2-thienylquinoxaline)] (P1), poly[N-9″-heptadecanyl-2,7-carbazole-alt-5,5-(5′,8′-di-2-thienyl-2,3-bis(4-octyloxyl)phenyl)quinoxaline] (P2), and poly[N-9″-heptadecanyl-2,7-carbazole-alt-5,5-(5′,8′-di-2-thienyl-2,3-bis(4-(3,7-dimethyloctyloxy)phenyl)quinoxaline] (P3), were synthesized and characterized for use in polymer solar cells (PSCs). We describe the effect of modifying the alkyl group of the side chain of the quinoxaline derivatives on the electronic and optoelectronic properties of the polymers. The field-effect hole mobility as well as the electronic energy levels and processability of the materials for PSC applications were investigated. Among the studied quinoxaline-based copolymers, P2 showed the best photovoltaic performance with an open-circuit voltage (VOC) of 0.82 V, a short-circuit current density (JSC) of 9.96 mA/cm2, a fill factor (FF) of 0.49, and a power-conversion efficiency of 4.0%...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9446fd5a5b147a175de9487f493694f4 https://doi.org/10.1021/ma102943g Zobrazit plný text záznamu