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    Solar Cells Using Quantum Funnels

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    Type
    Article
    Authors
    Kramer, Illan J. cc
    Levina, Larissa
    Debnath, Ratan
    Zhitomirsky, David
    Sargent, Edward H. cc
    KAUST Grant Number
    KUS-11-009-21
    Date
    2011-09-14
    Permanent link to this record
    http://hdl.handle.net/10754/599654
    
    Metadata
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    Abstract
    Colloidal quantum dots offer broad tuning of semiconductor bandstructure via the quantum size effect. Devices involving a sequence of layers comprised of quantum dots selected to have different diameters, and therefore bandgaps, offer the possibility of funneling energy toward an acceptor. Here we report a quantum funnel that efficiently conveys photoelectrons from their point of generation toward an intended electron acceptor. Using this concept we build a solar cell that benefits from enhanced fill factor as a result of this quantum funnel. This concept addresses limitations on transport in soft condensed matter systems and leverages their advantages in large-area optoelectronic devices and systems. © 2011 American Chemical Society.
    Citation
    Kramer IJ, Levina L, Debnath R, Zhitomirsky D, Sargent EH (2011) Solar Cells Using Quantum Funnels. Nano Lett 11: 3701–3706. Available: http://dx.doi.org/10.1021/nl201682h.
    Sponsors
    This publication is based on work in part supported by Award No. KUS-11-009-21, made by King Abdullah University of Science and Technology (KAUST). We thank Angstrom Engineering and Innovative Technologies for useful discussions regarding material deposition methods and control of glovebox environment, respectively. The EM research described in this paper was performed at the Canadian Centre for Electron Microscopy, which is supported by NSERC and other government agencies. I.J.K., R.D. and D.Z. acknowledge the financial support through the Queen Elizabeth II/Ricoh Canada Graduate Scholarship in Science and Technology, the MITACS Elevate Strategic Fellowship, and the NSERC CGS M Scholarship, respectively. The authors would also like to acknowledge the technical assistance and scientific guidance of L. Brzozowski, E. Palmiano, R Wolowiec, D. Kopilovic, and S. Hoogland.
    Publisher
    American Chemical Society (ACS)
    Journal
    Nano Letters
    DOI
    10.1021/nl201682h
    PubMed ID
    21827197
    ae974a485f413a2113503eed53cd6c53
    10.1021/nl201682h
    Scopus Count
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