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Related Experiment Video

Updated: Jan 23, 2026

Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording
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MXenes for Plasmonic Photodetection.

Dhinesh Babu Velusamy1, Jehad K El-Demellawi1, Ahmed M El-Zohry1

  • 1Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia.

Advanced Materials (Deerfield Beach, Fla.)
|June 22, 2019
PubMed
Summary

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Molybdenum carbide MXene (Mo2 CTx) photodetectors demonstrate excellent performance, with photoresponse from 400-800 nm. This breakthrough leverages surface plasmon-assisted hot carriers for durable, visible-light photodetection.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Optoelectronics

Background:

  • MXenes possess remarkable optical and plasmonic properties due to their atomic-layer structure.
  • Their application in photonic and plasmonic devices remains underexplored.

Purpose of the Study:

  • To fabricate and evaluate photodetectors based on various MXenes.
  • To investigate the underlying mechanisms for high-performance photodetection in Mo2 CTx.

Main Methods:

  • Fabrication of photodetectors using five different MXenes.
  • Characterization of Mo2 CTx thin films using spatially resolved electron energy-loss spectroscopy and ultrafast femtosecond transient absorption spectroscopy.
  • Analysis of surface chemistry and vibrational modes using micro-Raman spectroscopy.
Keywords:
MXenesflexible photodetectorslow-frequency Raman spectroscopymolybdenum carbidesurface plasmons

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Main Results:

  • Mo2 CTx MXene photodetectors exhibited superior performance with broad photoresponse (400-800 nm), high responsivity (9 A W-1), and detectivity (≈5 × 1011 Jones).
  • Photoresponse is attributed to surface plasmon-assisted hot carriers in Mo2 CTx.
  • Devices demonstrated stability under ambient conditions, continuous illumination, and mechanical stress.

Conclusions:

  • Mo2 CTx MXene is a promising material for durable visible-light photodetectors.
  • The study highlights the potential of MXenes in optoelectronic applications by understanding their plasmonic properties.