Narrow Energy Gap Polymers with Absorptions up to 1 200 nm and their Photovoltaic Properties

Autor:	David Mohamad, Richard G. Johnson, David G. Lidzey, Ahmed Iraqi, Hunan Yi, Richard Royce
Rok vydání:	2008
Předmět:	Photoluminescence Polymers and Plastics Carbazole Band gap Open-circuit voltage Organic Chemistry Energy conversion efficiency Analytical chemistry Heterojunction Acceptor chemistry.chemical_compound chemistry Polymerization Polymer chemistry Materials Chemistry
Zdroj:	Macromolecular Rapid Communications. 29:1804-1809
ISSN:	1022-1336
Popis:	A series of donor/acceptor carbazole copolymers comprising alternating 6,7-diphenyl-4,9-bis-(thiophen-2-yl)-[1,2,5]thiadiazolo[3,4-g]quinoxaline and 3,6-dimethyl-9-alkyl-9H-carbazole repeat units (P1), or 3,6-dimethyl-9-triarylamino-9H-carbazole repeat units (P2), or 9-tri-arylamino-9H-carbazole repeat units (P3) has been prepared following Suzuki polymerization procedures. P3 absorbs light up to 1200 nm and has an energy gap of 1.1 eV, while P1 and P2 have energy gaps of 1.3 and 1.25 eV, respectively. Photovoltaic cells with ITO/PED-OT:PSS/P3:PCBM (1:1 w/w)/Ca showed an open-circuit voltage of 0.4 V under white light illumination, power conversion efficiency of 0.61%, and short-circuit current of 5.2 mA ·cm -2 .
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::20d14018fa8c78033b2509a531e099a4 https://doi.org/10.1002/marc.200800440 Zobrazit plný text záznamu Plný text