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    Graded Doping for Enhanced Colloidal Quantum Dot Photovoltaics

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    Type
    Article
    Authors
    Ning, Zhijun
    Zhitomirsky, David
    Adinolfi, Valerio
    Sutherland, Brandon
    Xu, Jixian
    Voznyy, Oleksandr cc
    Maraghechi, Pouya
    Lan, Xinzheng
    Hoogland, Sjoerd
    Ren, Yuan
    Sargent, Edward H. cc
    KAUST Grant Number
    KUS-11-009-21
    Date
    2013-02-05
    Online Publication Date
    2013-02-05
    Print Publication Date
    2013-03-25
    Permanent link to this record
    http://hdl.handle.net/10754/598424
    
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    Abstract
    A novel approach to improving all-inorganic colloidal quantum dot (CQD) homojunction solar cells by engineering the doping spatial profile to produce a doping gradient within the n-type absorber is presented. The doping gradient greatly improves carrier collection and enhances the voltages attainable by the device, leading to a 1 power point power conversion efficiency (PCE) improvement over previous inorganic CQD solar cells. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
    Citation
    Ning Z, Zhitomirsky D, Adinolfi V, Sutherland B, Xu J, et al. (2013) Graded Doping for Enhanced Colloidal Quantum Dot Photovoltaics. Advanced Materials 25: 1719–1723. Available: http://dx.doi.org/10.1002/adma.201204502.
    Sponsors
    This publication is based in part on work supported by Award KUS-11-009-21, made by King Abdullah University of Science and Technology (KAUST), by the Ontario Research Fund Research Excellence Program, and by the Natural Sciences and Engineering Research Council (NSERC) of Canada. D.Z. acknowledges support from the NSERC CGS D scholarship. We thank Angstrom Engineering, Inc. and Innovative Technology, Inc. for useful discussions regarding material deposition methods and control of the glovebox environment, respectively. The authors thank: Larissa Levina for the assistance of quantum dots synthesis, Xihua Wang, Susanna Thon for helpful discussion; Andre Labelle and Daniel Paz-Soldan for measurement asisstance; and E. Palmiano, R. Wolowiec, and D. Kopilovic for their help during the course of study.
    Publisher
    Wiley
    Journal
    Advanced Materials
    DOI
    10.1002/adma.201204502
    PubMed ID
    23381974
    ae974a485f413a2113503eed53cd6c53
    10.1002/adma.201204502
    Scopus Count
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