期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 19, 期 30, 页码 5336-5342出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b821979f
关键词
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资金
- Dutch Polymer Institute (DPI) [325, 524]
A series of four small band gap polymers have been synthesized and have been incorporated into bulk heterojunction solar cells. The polymers were prepared via Yamamoto coupling and consist of alternating electron-rich dithiophene and electron-deficient bisquinoxaline or thienopyrazine units. In the thin solid films the optical band gaps (E(g)) vary from 1.38 eV for the bisquinoxaline to 1.21 eV for thienopyrazine containing polymers. All polymers provide a photovoltaic response when blended with a methanofullerene as electron acceptor in the near infrared region up to the optical band gap. The best cells reach an efficiency of eta = 1.5% under estimated standard solar light conditions (AM1.5G, 100 mW/cm(2)).
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