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Compact Quantum Dots for Single-molecule Imaging
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Colloidal quantum dots for thermal infrared sensing and imaging.

Shihab Bin Hafiz1, Michael Scimeca2, Ayaskanta Sahu3

  • 1Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, NJ, 07102, USA.

Nano Convergence
|March 6, 2019
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Colloidal quantum dots enable new thermal infrared optoelectronics. This review covers their use in advanced photodetectors for mid- and long-wavelength infrared applications.

Keywords:
Colloidal quantum dotsOptoelectronicsPhotodetectorsThermal infrared

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Area of Science:

  • Materials Science
  • Optoelectronics Engineering
  • Infrared Technology

Background:

  • Colloidal quantum dots (CQDs) offer unique solution-processed material options for optoelectronics.
  • Existing materials are limited in the thermal infrared (TIR) spectral regions.
  • CQDs present a promising alternative for TIR applications.

Purpose of the Study:

  • To review recent advancements in colloidal quantum dot photodetectors for the mid- and long-wavelength infrared.
  • To explore the synthesis, characterization, and device physics of TIR CQDs.
  • To discuss the fabrication, measurement, and future potential of this technology.

Main Methods:

  • Literature review of recent research on colloidal quantum dots for thermal infrared applications.
  • Survey of synthesis and characterization techniques for TIR CQDs.
  • Analysis of photodetector device operation, fabrication, and measurement.

Main Results:

  • CQDs are being actively developed for mid- and long-wavelength infrared photodetectors.
  • Various CQD materials and device architectures show promise for TIR detection.
  • Significant progress has been made in improving photodetector performance.

Conclusions:

  • Colloidal quantum dots are a key emerging technology for thermal infrared optoelectronics.
  • Further research and development are expected to enhance CQD-based photodetector capabilities.
  • This technology holds potential for diverse applications in the mid- and long-wavelength infrared spectrum.