Fullerene Photodetectors with a Linear Dynamic Range of 90 dB Enabled by a Cross-Linkable Buffer Layer

Authors

  • Fawen Guo,

    1. Department of Mechanical and Materials Engineering and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, USA
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  • Zhengguo Xiao,

    1. Department of Mechanical and Materials Engineering and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, USA
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  • Jinsong Huang

    Corresponding author
    • Department of Mechanical and Materials Engineering and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, USA
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E-mail: jhuang2@unl.edu

Abstract

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A low-noise fullerene-based organic photodetector with high sensitivity to weak light is enabled by a cross-linkable buffer layer. The device shows an excellent linear response from indoor light intensity to 12 pW/m2, corresponding to a linear dynamic range (LDR) of 90 dB. This is among the highest reported LDR for any organic photodetector, and larger than those of inorganic photodetectors such as GaN (50 dB) and InGaAs (66 dB).

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