Cathode Interface Investigation In Polymer/Fullerene Based Organic Solar Cells

DOI Web Site Web Site 参考文献23件
  • Liao Ying-Jie
    Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University College of Electronic Engineering, Jiujiang University
  • Yuan Da-Xing
    Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University
  • Xu Mei-Feng
    Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University
  • Jin Zhi-Ming
    Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University
  • Wang Zhao-Kui
    Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University
  • Liao Liao-Sheng
    Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University

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The authors investigate the cathode interface effects in polymer/fullerene based solar cell by using LiF, Liq and/or Bphen as the interfacial layers. Enhanced carrier extracting is observed by using Liq as the electron transport layer. A maximum power conversion efficiency of 3.75% is obtained in the case of Liq, presenting a 14% enhancement compared with the device with LiF as the electron transport layer. A detailed analysis of the capacitance as function of frequency and bias yields information about interfacial charges transport as well as the extraction and accumulation of charges is carried out. Cole-Cole impedance plots illustrate the interfacial resistance of different cathode buffer layer based device. The device shows good charge transport and the photo-generated changes could be effectively collected by the electrode and less charge accumulation when Liq is uswed as the cathode buffer layer.

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