Advanced Materials

Color-Selective and CMOS-Compatible Photodetection Based on Aluminum Plasmonics

Authors

  • Bob Y. Zheng,

    1. Department of Electrical and Computer Engineering, Rice University, Houston, Texas, USA
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  • Yumin Wang,

    1. Laboratory for Nanophotonics, Rice University, Houston, Texas, USA
    2. Department of Physics and Astronomy, Rice University, Houston, Texas, USA
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  • Peter Nordlander,

    1. Department of Electrical and Computer Engineering, Rice University, Houston, Texas, USA
    2. Laboratory for Nanophotonics, Rice University, Houston, Texas, USA
    3. Department of Physics and Astronomy, Rice University, Houston, Texas, USA
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  • Naomi J. Halas

    Corresponding author
    1. Department of Electrical and Computer Engineering, Rice University, Houston, Texas, USA
    2. Laboratory for Nanophotonics, Rice University, Houston, Texas, USA
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Abstract

A color-selective, band-engineered photodetector is demonstrated. The device uses two Schottky junctions to accumulate charge in an energy well, which results in photocurrent gain and a plasmonic aluminum grating for photocurrent enhancement and red–green–blue color selectivity. This work provides a more intelligent way to design imaging sensors by integrating amplifiers and color filters directly into pixels.

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