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    Hybrid Silicon Nanocone–Polymer Solar Cells

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    Type
    Article
    Authors
    Jeong, Sangmoo
    Garnett, Erik C.
    Wang, Shuang
    Yu, Zongfu
    Fan, Shanhui
    Brongersma, Mark L.
    McGehee, Michael D.
    Cui, Yi cc
    KAUST Grant Number
    KVS-C1-015-21
    Date
    2012-05-03
    Online Publication Date
    2012-05-03
    Print Publication Date
    2012-06-13
    Permanent link to this record
    http://hdl.handle.net/10754/598528
    
    Metadata
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    Abstract
    Recently, hybrid Si/organic solar cells have been studied for low-cost Si photovoltaic devices because the Schottky junction between the Si and organic material can be formed by solution processes at a low temperature. In this study, we demonstrate a hybrid solar cell composed of Si nanocones and conductive polymer. The optimal nanocone structure with an aspect ratio (height/diameter of a nanocone) less than two allowed for conformal polymer surface coverage via spin-coating while also providing both excellent antireflection and light trapping properties. The uniform heterojunction over the nanocones with enhanced light absorption resulted in a power conversion efficiency above 11%. Based on our simulation study, the optimal nanocone structures for a 10 μm thick Si solar cell can achieve a short-circuit current density, up to 39.1 mA/cm 2, which is very close to the theoretical limit. With very thin material and inexpensive processing, hybrid Si nanocone/polymer solar cells are promising as an economically viable alternative energy solution. © 2012 American Chemical Society.
    Citation
    Jeong S, Garnett EC, Wang S, Yu Z, Fan S, et al. (2012) Hybrid Silicon Nanocone–Polymer Solar Cells. Nano Lett 12: 2971–2976. Available: http://dx.doi.org/10.1021/nl300713x.
    Sponsors
    This work is based upon work supported as part of the Center on Nanostructuring for Efficient Energy Conversion (CNEEC) at Stanford University, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Award DE-SC0001060. This work was partially supported by the Center for Advanced Molecular Photovoltaics (CAMP) under Award KVS-C1-015-21, made by King Abdullah University of Science and Technology. S.J. acknowledges support from the Korea Foundation for Advanced Studies (KFAS) for graduate fellowship. S.J. thanks Dr. Theodore I. Kamins and Dr. Jonathan D. Servaites for helpful discussions concerning the device fabrication and data analysis.
    Publisher
    American Chemical Society (ACS)
    Journal
    Nano Letters
    DOI
    10.1021/nl300713x
    PubMed ID
    22545674
    ae974a485f413a2113503eed53cd6c53
    10.1021/nl300713x
    Scopus Count
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