Dicyanovinylene-Substituted Oligothiophenes for Organic Solar Cells

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• 关键词：Charge carrier generation ; Multijunction ; Oligothiophene ; Photoinduced absorption ; Small molecule ; Structure ; property relationships ; Triplet exciton
• 刊名：Advances in Polymer Science
• 出版年：2017
• 出版时间：2017
• 年：2017
• 卷：272
• 期：1
• 页码：51-75
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• 作者单位：Christian Koerner (20) (21)
  Hannah Ziehlke (20) (21)
  Roland Fitzner (20) (21)
  Moritz Riede (20) (21)
  Amaresh Mishra (20) (21)
  Peter Bäuerle (20) (21)
  Karl Leo (20) (21)
  
  20. Institut für Angewandte Photophysik, Technische Universtität Dresden, Dresden, Germany
  21. Institut für Organische Chemie II und Neue Materialien, Universität Ulm, Ulm, Germany
  
• 丛书名：Elementary Processes in Organic Photovoltaics
• ISBN：978-3-319-28338-8
• 卷排序：272

文摘

We investigate dicyanovinyl-substituted oligothiophene derivatives as absorber materials in organic solar cells. We determine structure–property relationships, which are important for materials design. We demonstrate the influence of those structural changes on the processing ability, energy levels, optical properties, thin-film morphology, and charge transport. Furthermore, we give a detailed picture of the microscopic processes between photon absorption and charge carrier generation, in particular, the importance of triplet exciton losses and a relationship between the yield of charge carrier generation and macroscopic charge-transport properties.