Near-Infrared Sensitization of Polymer/Fullerene Solar Cells: Controlling the Morphology and Transport in Ternary Blends

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• 关键词：Cascade alignment ; Differential scanning calorimetry ; Fullerene multiadducts ; GIWAXS ; Hansen solubility parameters ; Morphology agent ; Near ; IR sensitization ; OPV ; Phase diagram ; SCLC ; Surface energy ; Ternary solar cell ; Time ; resolved pump ; probe spectroscopy ; Transport
• 刊名：Advances in Polymer Science
• 出版年：2017
• 出版时间：2017
• 年：2017
• 卷：272
• 期：1
• 页码：311-326
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• 作者单位：Tayebeh Ameri (20)
  Michael Forster (21)
  Ullrich Scherf (21)
  Christoph J. Brabec (20) (22)
  
  20. Department of Materials Science and Engineering, Materials for Electronics and Energy Technology (i-MEET), Friedrich-Alexander University Erlangen-Nuremberg, Martensstrasse 7, 91058, Erlangen, Germany
  21. Mathematik and Naturwissenschaften Fachgebiet Makromolekulare Chemie and Institut für Polymertechnologie, Bergische Universität Wuppertal, Gaußstraße 20, 42097, Wuppertal, Germany
  22. Bavarian Center for Applied Energy Research (ZAE Bayern), Haberstr. 2a, 91058, Erlangen, Germany
  
• 丛书名：Elementary Processes in Organic Photovoltaics
• ISBN：978-3-319-28338-8
• 卷排序：272

文摘

The concept of near-infrared (NIR) sensitization can be used as an alternative strategy to extend the spectral sensitivity of wide-bandgap polymers in polymer/fullerene solar cells. In ternary systems consisting of a conjugated polymer donor, a fullerene acceptor, and a sensitizer, the fullerene needs to act as an electron acceptor as well as an electron-transport matrix, the polymeric donor should provide a sufficiently high hole mobility, and the sensitizers should sensitize the bulk heterojunction solar cell in the red/NIR region. So far we have used various optoelectrical and structural techniques to investigate the possible mechanisms of the charge transfer and charge transport among the three components and microstructure of the ternary blends. In this review-like chapter, we present our recent achievements on developing the concept of NIR sensitization for polymer/fullerene solar cells by mainly addressing the important aspect of the relationship between morphology and transport.