The Role of Driving Energy and Delocalized States for Charge Separation in Organic Semiconductors

The electron-hole pair created via photon absorption in organic photoconversion systems must overcome the Coulomb attraction to achieve long-range charge separation. We show that this process is facilitated through the formation of excited, delocalized band states. In our experiments on organic photovoltaic cells, these states were accessed for a short time (

• AV
  Alexander von Humboldt-Stiftung
• SV
  Stichting voor Fundamenteel Onderzoek der Materie
• FD
  Fonds De La Recherche Scientifique - FNRS
• NO
  Nederlandse Organisatie voor Wetenschappelijk Onderzoek
• NS
  Natural Sciences and Engineering Research Council of Canada
• EA
  Engineering and Physical Sciences Research Council

  Award: EP/G060738/1
• CC
  Corpus Christi College, University of Cambridge