The search result changed since you submitted your search request. Documents might be displayed in a different sort order.
  • search hit 5 of 18
Back to Result List

Efficient charge generation by relaxed charge-transfer states at organic interfaces

  • 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 viaweakly allowed, low-energy optical transitions. For a wide range of photovoltaic devices based on polymer: fullerene, small-molecule:C-60 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.

Export metadata

Additional Services

Search Google Scholar Statistics
Metadaten
Author details:Koen Vandewal, Steve AlbrechtORCiDGND, Eric T. Hoke, Kenneth R. Graham, Johannes Widmer, Jessica D. Douglas, Marcel SchubertORCiD, William R. Mateker, Jason T. Bloking, George F. Burkhard, Alan Sellinger, Jean M. J. Frechet, Aram Amassian, Moritz K. Riede, Michael D. McGehee, Dieter NeherORCiDGND, Alberto Salleo
DOI:https://doi.org/10.1038/NMAT3807
ISSN:1476-1122
ISSN:1476-4660
Pubmed ID:https://pubmed.ncbi.nlm.nih.gov/24240240
Title of parent work (English):Nature materials
Publisher:Nature Publ. Group
Place of publishing:London
Publication type:Article
Language:English
Year of first publication:2014
Publication year:2014
Release date:2017/03/27
Volume:13
Issue:1
Number of pages:6
First page:63
Last Page:68
Funding institution:Center for Advanced Molecular Photovoltaics [KUS-C1-015-21]; Department of Energy, Laboratory Directed Research and Development [DE-AC02-76SF00515]; BMBF [03IP602]; BMBF within PVcomB [FKZ 03IS2151D]; DFG [SPP 1355]
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
Peer review:Referiert
Accept ✔
This website uses technically necessary session cookies. By continuing to use the website, you agree to this. You can find our privacy policy here.