%T A review on graphene-based light emitting functional devices %A M. Junaid %A M.H.M. Khir %A G. Witjaksono %A Z. Ullah %A N. Tansu %A M.S. Mohamed Saheed %A P. Kumar %A L. Hing Wah %A S.A. Magsi %A M.A. Siddiqui %I MDPI AG %V 25 %K graphite, chemistry; electric conductivity; electrochemistry; electrode; electron; electronics; light; luminescence; nanotechnology; optical instrumentation; optics; procedures; surface plasmon resonance; temperature, Electric Conductivity; Electrochemistry; Electrodes; Electronics; Electrons; Graphite; Light; Luminescence; Nanotechnology; Optical Devices; Optics and Photonics; Surface Plasmon Resonance; Temperature %X In recent years, the field of nanophotonics has progressively developed. However, constant demand for the development of new light source still exists at the nanometric scale. Light emissions from graphene-based active materials can provide a leading platform for the development of two dimensional (2-D), flexible, thin, and robust light-emitting sources. The exceptional structure of Dirac�s electrons in graphene, massless fermions, and the linear dispersion relationship with ultra-wideband plasmon and tunable surface polarities allows numerous applications in optoelectronics and plasmonics. In this article, we present a comprehensive review of recent developments in graphene-based light-emitting devices. Light emissions from graphene-based devices have been evaluated with different aspects, such as thermal emission, electroluminescence, and plasmons assisted emission. Theoretical investigations, along with experimental demonstration in the development of graphene-based light-emitting devices, have also been reviewed and discussed. Moreover, the graphene-based light-emitting devices are also addressed from the perspective of future applications, such as optical modulators, optical interconnects, and optical sensing. Finally, this review provides a comprehensive discussion on current technological issues and challenges related to the potential applications of emerging graphene-based light-emitting devices. © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). %D 2020 %N 18 %R 10.3390/molecules25184217 %O cited By 14 %L scholars12776 %J Molecules