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Related Experiment Video

Updated: Feb 15, 2026

Visible-light Induced Reduction of Graphene Oxide Using Plasmonic Nanoparticle

Visible-light Induced Reduction of Graphene Oxide Using Plasmonic Nanoparticle

Published on: September 22, 2015

Ultrafast Graphene Light Emitters.

Young Duck Kim¹, Yuanda Gao, Ren-Jye Shiue²

¹Department of Physics, Kyung Hee University , Seoul 02447, Republic of Korea.

|January 17, 2018

Summary

This summary is machine-generated.

Ultrafast graphene light emitters achieve 10 GHz bandwidth for nanophotonics. Encapsulation with hexagonal boron nitride (hBN) enhances light emission and enables stable visible thermal radiation.

Keywords:

Graphene optoelectronics thermal radiation ultrafast light emitter van der Waals heterostructure

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Area of Science:

Nanophotonics
Optoelectronics
Materials Science

Background:

Nanoscale light sources are crucial for nanophotonics.
Compound semiconductor-based sources are limited by footprint.
Monolithic ultrafast light sources remain a challenge.

Purpose of the Study:

To demonstrate electrically driven ultrafast graphene light emitters.
To investigate the role of hexagonal boron nitride (hBN) encapsulation.
To explore applications in optical communications and optoelectronics.

Main Methods:

Fabrication of graphene-based light emitters.
Electrical excitation for light pulse generation.
Hexagonal boron nitride (hBN) encapsulation for spectral modification.

Main Results:

Achieved light pulse generation with up to 10 GHz bandwidth.
Broad spectral range from visible to near-infrared.
Up to 460% enhancement in emission with hBN encapsulation.
Stable visible thermal radiation up to 2000 K.
Efficient ultrafast electronic cooling via polaritonic modes.

Conclusions:

Electrically driven graphene light emitters offer a promising path for on-chip light sources.
hBN encapsulation enhances emission properties and stability.
These emitters are suitable for optical communications and optoelectronic applications.