Advanced Materials

Porphyrin-Tape/C60 Organic Photodetectors with 6.5% External Quantum Efficiency in the Near Infrared

Authors

  • Jeramy D. Zimmerman,

    1. Departments of Electrical Engineering and Computer Science, Materials Science and Engineering, and Physics, University of Michigan, Ann Arbor, MI 48109 (USA)
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  • Vyacheslav V. Diev,

    1. Department of Chemistry, University of Southern California, Los Angeles, CA 90089 (USA)
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  • Kenneth Hanson,

    1. Department of Chemistry, University of Southern California, Los Angeles, CA 90089 (USA)
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  • Richard R. Lunt,

    1. Departments of Electrical Engineering and Computer Science, Materials Science and Engineering, and Physics, University of Michigan, Ann Arbor, MI 48109 (USA)
    2. Department of Chemical Engineering, Princeton University, Princeton, NJ 08544 (USA)
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  • Eric K. Yu,

    1. Departments of Electrical Engineering and Computer Science, Materials Science and Engineering, and Physics, University of Michigan, Ann Arbor, MI 48109 (USA)
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  • Mark E. Thompson,

    1. Department of Chemistry, University of Southern California, Los Angeles, CA 90089 (USA)
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  • Stephen R. Forrest

    Corresponding author
    1. Departments of Electrical Engineering and Computer Science, Materials Science and Engineering, and Physics, University of Michigan, Ann Arbor, MI 48109 (USA)
    • Departments of Electrical Engineering and Computer Science, Materials Science and Engineering, and Physics, University of Michigan, Ann Arbor, MI 48109 (USA)
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Abstract

Several porphyrin-dimer tapelike molecule/C60 heterojunction detectors are investigated. Their extended π-electron systems provide photovoltaic response into the near infrared, with an external quantum efficiency of up to 6.5% at a wavelength of λ = 1350 nm. Additionally, a specific detectivity of D* = 1.6 × 1011 Jones at λ = 1090 nm, and (2.3 ± 0.1) × 1010 Jones at λ = 1350 nm are detected. The optical response time of the detectors is resistance–capacitance limited at 1.87 ± 0.03 ns.

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