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- W2323018724 endingPage "17278" @default.
- W2323018724 startingPage "17266" @default.
- W2323018724 abstract "We present an effective strategy to modulate the electron-rich capability in donor–acceptor (D-A) polymers for improving the performances of organic solar cell (OSC) devices. In order to confirm this strategy, based on a series of the reported D–A polymers ((PCPDTBT(Pa1), PCPDTFBT (Pa2), and PCPDTDFBT (Pa3)) which contain the electron-donating cyclopentadithiophene (CPDT) and differently electron-withdrawing units of benzo[c][1,2,5,]thiadiazole (BT), 5-fluorobenzo[c][1,2,5]thiadiazole (FBT), and 5,6-difluorobenzo[c] [1,2,5]thiadiazole (DFBT), we replace CPDT with electron-donating dithienogermolodithiophene (DTTG) in polymers Pa1–Pa3, respectively, and design a series of new D–A polymers Pb1–Pb3. Compared with the polymers Pa1–Pa3, the new designed polymers Pb1–Pb3 not only yield a greater red-shift of the absorption spectrum of the donor polymer and result in a larger absorption region within the solar emission spectrum and an improved light-absorbing efficiency but also exhibit much better electron transfer efficiency in active layer, larger hole transport rates and higher open circuit voltage. Moreover, the estimated power conversion efficiency of the designed polymers in OSC applications reaches up to ∼8.4%. Conclusively, the approach based on modulating the electron-donating capability in D–A polymer chain is a feasible way to enhance their intrinsic properties of donor polymers and thereby achieving the purpose that improves the performances of the OSC devices." @default.
- W2323018724 created "2016-06-24" @default.
- W2323018724 creator A5005746980 @default.
- W2323018724 creator A5011085153 @default.
- W2323018724 creator A5021384155 @default.
- W2323018724 creator A5073741395 @default.
- W2323018724 creator A5077009651 @default.
- W2323018724 date "2014-07-17" @default.
- W2323018724 modified "2023-10-17" @default.
- W2323018724 title "Strategy to Modulate the Electron-Rich Units in Donor–Acceptor Copolymers for Improvements of Organic Photovoltaics" @default.
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- W2323018724 doi "https://doi.org/10.1021/jp503248a" @default.