• Frontiers of Optoelectronics
  • Vol. 9, Issue 1, 60 (2016)
Jie SHI1、2, Zhaofei CHAI1, Runli TANG1, Huiyang LI1, Hongwei HAN3, Tianyou PENG1, Qianqian LI1、*, and Zhen LI1
Author Affiliations
  • 1Department of Chemistry, Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, Wuhan University, Wuhan 430072, China
  • 2Hubei Key Laboratory of Oilcrops Lipid Chemistry and Nutrition, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences,Wuhan 430062, China
  • 3Michael Gr?tzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, Chin
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    Abstract

    Four organic sensitizers containing quinoxaline or benzoxadiazole as an auxiliary electron acceptor in conjugated bridge were synthesized and utilized for dyesensitized solar cells (DSSCs). It was found that the incorporation of different electron-withdrawing moieties can affect the absorption spectra, electronic properties, the interfacial interactions and then the overall conversion efficiencies significantly. Therefore, the appropriate selection of the auxiliary acceptor was important to optimize the photovoltaic performance of solar cells. Among these sensitizers, LI-44 based solar cell showed the best photovoltaic performance: a shortcircuit photocurrent density (Jsc) of 13.90 mA/cm2, an open-circuit photovoltage (Voc) of 0.66 V, and a fill factor (FF) of 0.66, corresponding to an overall conversion efficiency of 6.10% under standard global AM 1.5 solar light conditions.
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    Jie SHI, Zhaofei CHAI, Runli TANG, Huiyang LI, Hongwei HAN, Tianyou PENG, Qianqian LI, Zhen LI. Effect of electron-withdrawing groups in conjugated bridges: molecular engineering of organic sensitizers for dyesensitized solar cells[J]. Frontiers of Optoelectronics, 2016, 9(1): 60
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    Category: RESEARCH ARTICLE
    Received: Nov. 30, 2015
    Accepted: Jan. 4, 2016
    Posted: Jan. 1, 2016
    Published Online: Oct. 21, 2016
    The Author Email: LI Qianqian (qianqian-alinda@163.com;)