期刊
ADVANCED MATERIALS
卷 24, 期 3, 页码 425-+出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201103065
关键词
bulk heterojunctions; solar cells; molecular orientation; semiconducting polymers; thiazolothiazole
类别
资金
- JGC-S Scholarship Foundation
- Grants-in-Aid for Scientific Research [24685030, 23245041] Funding Source: KAKEN
A thiazolothiazole-thiophene copolymer is examined as the active material in bulk heterojunction (BHJ) solar cells. By optimizing the molecular weight, the polymer-based cells exhibit power conversion efficiencies as high as 5.7%. The increase in molecular weight improves the orientational order, and blending with phenyl-C61-butyric acid methyl ester (PC61BM) changes the orientational motif from edge-on to face-on, which accounts for the trend in photovoltaic performances. These results might give new insight into the structure-property relationships in BHJ solar cells.
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