التفاصيل البيبلوغرافية
| العنوان: |
A Conjugated Random Copolymer of Benzodithiophene-Difluorobenzene-Diketopyrrolopyrrole with Full Visible-Light Absorption for Bulk-Heterojunction Solar Cells. |
| المؤلفون: |
Wang, Zhihui, Li, Zhanfeng, Zhang, Haiqing, Liu, Weipeng, Xu, Xiaoxiang, Si, Changfeng, Cui, Yanxia, Sun, Qinjun, Wang, Hua, Shi, Fang, Hao, Yuying |
| المصدر: |
Macromolecular Chemistry & Physics; Nov2014, Vol. 215 Issue 21, p2119-2124, 6p |
| مصطلحات موضوعية: |
ABSORPTION, COPOLYMERS, LIGHT absorption, VOLTAMMETRY, SOLAR cells, OPEN-circuit voltage |
| مستخلص: |
Stille coupling polymerization is used to synthesize a new donor-acceptor (D-A) conjugated random copolymer (PBDT-DFB-DPP) that comprises an electron-rich benzodithiophene (BDT) unit in conjugation with electron-deficient 2,5-difluorobenzene (DFB) and diketopyrrolopyrrole (DPP) moieties, which have complementary light-absorption behavior. The thermal, photophysical, and electrochemical properties of the polymer are investigated using thermogravimetric analysis, UV-vis absorption spectroscopy, and cyclic voltammetry. The random copolymer exhibits both broad light absorption and a low-lying highest occupied molecular orbital (HOMO) level, which contribute to enhancement of the short-circuit current density ( Jsc) and open-circuit voltage ( Voc). A bulk-heterojunction polymer solar cell fabricated from PBDT-DFB-DPP and PC60BM exhibits a promising power conversion efficiency (PCE) of 2.50%. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
