Novel NIR-absorbing conjugated polymers for efficient polymer solar cells: effect of alkyl chain length on device performance
Data(s) |
2009
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Resumo |
Three low bandgap conjugated polymers, i.e., PDTPBT-C8, PDTPBT-C6 and PDTPBT-C5, which consist of alternating N-alkyl dithieno[3,2-b: 2',3'-d] pyrrole and 2,1,3-benzothiadiazole units and carry 1-octylnonyl, 1-hexylheptyl and 1-pentylhexyl as side chains, respectively, were synthesized. These polymers show strong absorption in the wavelength range of 600-900 nm with enhanced absorption coefficient as the length of alkyl chain decreases. The film morphology of the polymers and 1-(3-methoxycarbonyl) propyl-1-phenyl-[6,6]-C-61 (PCBM) blends is also dependent on the alkyl chain length. As the length decreases, the film becomes more uniform and the domian size decreases from 400-900 nm for PDTPBT-C8 to similar to 50 nm for PDTPBT-C5. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Yue W;Zhao Y;Shao SY;Tian HK;Xie ZY;Geng YH;Wang FS.Novel NIR-absorbing conjugated polymers for efficient polymer solar cells: effect of alkyl chain length on device performance,JOURNAL OF MATERIALS CHEMISTRY ,2009,19(15):2199-2206 |
Palavras-Chave | #BAND-GAP COPOLYMERS #PHOTOVOLTAIC CELLS #ORGANIC PHOTOVOLTAICS #EMITTING-DIODES #HETEROJUNCTIONS #MORPHOLOGY #BENZOTHIADIAZOLE #POLYFLUORENE #THIOPHENE #TRANSISTORS |
Tipo |
期刊论文 |