4.3 Review

2D Material-Based Photodetectors for Infrared Imaging

Journal

SMALL SCIENCE
Volume 2, Issue 1, Pages -

Publisher

WILEY
DOI: 10.1002/smsc.202100051

Keywords

2D materials; infrared detection and imaging; photodetectors

Funding

  1. Six Top Talent Innovation Teams [TD-XCL-004]
  2. Fundamental Research Funds for the Central Universities [30919012107]
  3. Nanjing University of Science and Technology

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Infrared detection and imaging, as a dynamic research field, has broad prospects in areas such as spectra-chemistry, biomedicine, and artificial intelligence. The use of 2D materials to manufacture ultrathin and flexible optoelectronic devices offers opportunities for applications beyond imagination.
As a dynamic research field, infrared (IR) detection and imaging presents broad prospect in spectra-chemistry, biomedicine, and artificial intelligence. Due to the excellent properties, 2D materials are expected to overcome the serious manufacturing cost and integration problems of Si-based photodetectors, providing opportunities for the universal application of IR imaging. Up to now, dozens of 2D materials are used to manufacture IR photodetectors. The ultrathin and flexible 2D material-based optoelectronic devices, which are easy to machine and integrate, will demonstrate the application beyond imagination. In this review, first, the principle of IR detection and imaging is introduced, in which the single pixel and array imaging are discussed. Then the promising materials, toward broadband detection and special detection, are introduced in brief and the devices for imaging are summarized, including the mode based on light intensity and the strategy originated from polarization. Finally, it is prospected that the 2D materials have the capability to show the integral IR world, which contains large amount of valuable information such as molecular vibration spectra and significant applications such as artificial retina.

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