Your browser doesn't support javascript.
loading
Efficient charge generation by relaxed charge-transfer states at organic interfaces.
Vandewal, Koen; Albrecht, Steve; Hoke, Eric T; Graham, Kenneth R; Widmer, Johannes; Douglas, Jessica D; Schubert, Marcel; Mateker, William R; Bloking, Jason T; Burkhard, George F; Sellinger, Alan; Fréchet, Jean M J; Amassian, Aram; Riede, Moritz K; McGehee, Michael D; Neher, Dieter; Salleo, Alberto.
Afiliación
  • Vandewal K; Department of Materials Science and Engineering, Stanford University, 476 Lomita Mall, Stanford, California 94305, USA.
  • Albrecht S; Institute of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany.
  • Hoke ET; Department of Materials Science and Engineering, Stanford University, 476 Lomita Mall, Stanford, California 94305, USA.
  • Graham KR; 1] Department of Materials Science and Engineering, Stanford University, 476 Lomita Mall, Stanford, California 94305, USA [2] King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
  • Widmer J; Institut für Angewandte Photophysik TU Dresden, George-Bähr-Strasse 1, 01062, Dresden, Germany.
  • Douglas JD; Department of Chemistry, University of California, 727 Latimer Hall, Berkeley, California 94720, USA.
  • Schubert M; Institute of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany.
  • Mateker WR; Department of Materials Science and Engineering, Stanford University, 476 Lomita Mall, Stanford, California 94305, USA.
  • Bloking JT; Department of Materials Science and Engineering, Stanford University, 476 Lomita Mall, Stanford, California 94305, USA.
  • Burkhard GF; Department of Materials Science and Engineering, Stanford University, 476 Lomita Mall, Stanford, California 94305, USA.
  • Sellinger A; 1] Department of Materials Science and Engineering, Stanford University, 476 Lomita Mall, Stanford, California 94305, USA [2].
  • Fréchet JM; 1] King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia [2] Department of Chemistry, University of California, 727 Latimer Hall, Berkeley, California 94720, USA.
  • Amassian A; King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
  • Riede MK; 1] Institut für Angewandte Photophysik TU Dresden, George-Bähr-Strasse 1, 01062, Dresden, Germany [2].
  • McGehee MD; Department of Materials Science and Engineering, Stanford University, 476 Lomita Mall, Stanford, California 94305, USA.
  • Neher D; Institute of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany.
  • Salleo A; Department of Materials Science and Engineering, Stanford University, 476 Lomita Mall, Stanford, California 94305, USA.
Nat Mater ; 13(1): 63-8, 2014 Jan.
Article en En | MEDLINE | ID: mdl-24240240
Interfaces between organic electron-donating (D) and electron-accepting (A) materials have the ability to generate charge carriers on illumination. Efficient organic solar cells require a high yield for this process, combined with a minimum of energy losses. Here, we investigate the role of the lowest energy emissive interfacial charge-transfer state (CT1) in the charge generation process. We measure the quantum yield and the electric field dependence of charge generation on excitation of the charge-transfer (CT) state manifold via weakly allowed, low-energy optical transitions. For a wide range of photovoltaic devices based on polymer:fullerene, small-molecule:C60 and polymer:polymer blends, our study reveals that the internal quantum efficiency (IQE) is essentially independent of whether or not D, A or CT states with an energy higher than that of CT1 are excited. The best materials systems show an IQE higher than 90% without the need for excess electronic or vibrational energy.
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Mater Asunto de la revista: CIENCIA / QUIMICA Año: 2014 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Mater Asunto de la revista: CIENCIA / QUIMICA Año: 2014 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido