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A Review on Graphene-Based Light Emitting Functional Devices.

Muhammad Junaid1,2, M H Md Khir1, Gunawan Witjaksono3

  • 1Department of Electrical and Electronic Engineering, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Perak, Malaysia.

Molecules (Basel, Switzerland)
|September 17, 2020
PubMed
Summary

Graphene light-emitting devices offer a promising platform for developing 2-D, flexible sources. This review explores their thermal, electroluminescent, and plasmon-assisted emissions for future optoelectronics.

Keywords:
CNTsSWNTelectroluminescenceexcitonsgraphenegraphene oxidelight sourceplasmons-assisted emissionsthermal emissiontrions

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Area of Science:

  • Nanophotonics
  • Materials Science
  • Optoelectronics

Background:

  • The demand for nanoscale light sources persists despite advances in nanophotonics.
  • Graphene's unique electronic properties, including Dirac electrons and tunable surface polarities, enable novel light-emitting applications.
  • Two-dimensional (2-D) materials like graphene are crucial for developing flexible, thin, and robust optoelectronic devices.

Purpose of the Study:

  • To provide a comprehensive review of recent advancements in graphene-based light-emitting devices.
  • To analyze various light emission mechanisms in graphene, including thermal, electroluminescence, and plasmon-assisted emission.
  • To discuss the future potential and challenges of graphene light emitters in areas like optical modulators and sensors.

Main Methods:

  • Review of theoretical investigations and experimental demonstrations of graphene light-emitting devices.
  • Analysis of different light emission aspects: thermal, electroluminescence, and plasmon-assisted.
  • Exploration of applications in optoelectronics, plasmonics, optical modulators, interconnects, and sensing.

Main Results:

  • Graphene-based materials are suitable for creating 2-D, flexible, thin, and robust light-emitting sources.
  • Diverse emission mechanisms (thermal, electroluminescence, plasmon-assisted) are feasible in graphene devices.
  • Significant progress has been made through both theoretical and experimental research.

Conclusions:

  • Graphene light-emitting devices represent a leading platform for next-generation optoelectronics.
  • Future applications in optical modulators, interconnects, and sensing are promising.
  • Addressing current technological challenges is key to realizing the full potential of these emerging devices.