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    Colloidal Quantum Dot Photovoltaics: A Path Forward

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    Type
    Article
    Authors
    Kramer, Illan J. cc
    Sargent, Edward H. cc
    KAUST Grant Number
    KUS-11-009-21
    Date
    2011-10-12
    Online Publication Date
    2011-10-12
    Print Publication Date
    2011-11-22
    Permanent link to this record
    http://hdl.handle.net/10754/597796
    
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    Abstract
    Colloidal quantum dots (CQDs) offer a path toward high-efficiency photovoltaics based on low-cost materials and processes. Spectral tunability via the quantum size effect facilitates absorption of specific wavelengths from across the sun's broad spectrum. CQD materials' ease of processing derives from their synthesis, storage, and processing in solution. Rapid advances have brought colloidal quantum dot photovoltaic solar power conversion efficiencies of 6% in the latest reports. These achievements represent important first steps toward commercially compelling performance. Here we review advances in device architecture and materials science. We diagnose the principal phenomenon-electronic states within the CQD film band gap that limit both current and voltage in devices-that must be cured for CQD PV devices to fulfill their promise. We close with a prescription, expressed as bounds on the density and energy of electronic states within the CQD film band gap, that should allow device efficiencies to rise to those required for the future of the solar energy field. © 2011 American Chemical Society.
    Citation
    Kramer IJ, Sargent EH (2011) Colloidal Quantum Dot Photovoltaics: A Path Forward. ACS Nano 5: 8506–8514. Available: http://dx.doi.org/10.1021/nn203438u.
    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). I.J.K. acknowledges the financial support through the Queen Elizabeth II/Ricoh Canada Graduate Scholarship in Science and Technology.
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Nano
    DOI
    10.1021/nn203438u
    PubMed ID
    21967723
    ae974a485f413a2113503eed53cd6c53
    10.1021/nn203438u
    Scopus Count
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