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    Power losses in bilayer inverted small molecule organic solar cells

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    Type
    Article
    Authors
    Trinh, Cong
    Bakke, Jonathan R.
    Brennan, Thomas P.
    Bent, Stacey F.
    Navarro, Francisco
    Bartynski, Andrew
    Thompson, Mark E.
    KAUST Grant Number
    KUS-C1-015-21
    Date
    2012-12-06
    Online Publication Date
    2012-12-06
    Print Publication Date
    2012-12-03
    Permanent link to this record
    http://hdl.handle.net/10754/599351
    
    Metadata
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    Abstract
    Inverted bilayer organic solar cells using copper phthalocyanine (CuPc) as a donor and C60 as an acceptor with the structure: glass/indium tin oxide (ITO)/ZnO/C60/CuPc/MoO3/Al, in which the zinc oxide (ZnO) was deposited by atomic layer deposition, are compared with a conventional device: glass/ITO/CuPc/C60/bathocuproine/Al. These inverted and conventional devices give short circuit currents of 3.7 and 4.8 mA/cm 2, respectively. However, the inverted device gives a reduced photoresponse from the CuPc donor compared to that of the conventional device. Optical field models show that the arrangement of organic layers in the inverted devices leads to lower absorption of long wavelengths by the CuPc donor; the low energy portion of the spectrum is concentrated near the metal oxide electrode in both devices. © 2012 American Institute of Physics.
    Citation
    Trinh C, Bakke JR, Brennan TP, Bent SF, Navarro F, et al. (2012) Power losses in bilayer inverted small molecule organic solar cells. Applied Physics Letters 101: 233903. Available: http://dx.doi.org/10.1063/1.4769440.
    Sponsors
    We acknowledge financial support from the Global Photonic Energy Corporation (GPEC), the King Abdullah University of Science and Technology (KAUST, KUS-C1-015-21), and the National Science Foundation Solar Energy Initiative (SOLAR, CHE-0934098). J.R.B. acknowledges funding from the National Science Foundation (NSF) Graduate Fellowship under Grant No. DGE-0645962. T.P.B. is supported by an Albion Walter Hewlett Fellowship. We would like to thank Dr. Cody Schlenker and Dr. Zhiwei Liu for helpful discussions.
    Publisher
    AIP Publishing
    Journal
    Applied Physics Letters
    DOI
    10.1063/1.4769440
    ae974a485f413a2113503eed53cd6c53
    10.1063/1.4769440
    Scopus Count
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    Publications Acknowledging KAUST Support

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