Synthesis of white fluorescent pyrrolic nitrogen-doped graphene quantum dots

Noor Far'ain Md Noor, Muhammad Ashraf Saiful Badri, Muhamad Mat Salleh, Ali Umar Akrajas

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Generation of bright white-light emitting diode is essential for electronic indicator and low-power lighting applications. Therefore, synthesis of white light emitting material with high quantum efficiency is highly desired. Herein, we report a facile approach to synthesize white light emitting material, i.e. pyrrolic nitrogen doped graphene quantum dots (pN-GQDs) via a solvothermal method. It was found that the pN-GQDs photoluminescence properties, i.e. emission wavelength, intensity and spectrum width, depend on the concentration of pyrolic nitrogen. In typical process, the pN-GQDs sample can emit white light, spectrum width as high as 350 nm, with brightness increase with the increasing of pyrrolic nitrogen. This characteristic is promising for white light emitting diode fabrication, hence lighting application. The synthetic approach of pN-GQDs preparation and characterization will be discussed.

Original languageEnglish
Pages (from-to)306-314
Number of pages9
JournalOptical Materials
Volume83
DOIs
Publication statusPublished - 1 Sep 2018

Fingerprint

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Graphene
Semiconductor quantum dots
graphene
Nitrogen
quantum dots
nitrogen
synthesis
illuminating
Light emitting diodes
light emitting diodes
Lighting
Quantum efficiency
quantum efficiency
Luminance
Photoluminescence
brightness
photoluminescence
Fabrication
Wavelength

Keywords

  • Nitrogen doping
  • Quantum dots
  • White light emission

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Synthesis of white fluorescent pyrrolic nitrogen-doped graphene quantum dots. / Far'ain Md Noor, Noor; Saiful Badri, Muhammad Ashraf; Mat Salleh, Muhamad; Akrajas, Ali Umar.

In: Optical Materials, Vol. 83, 01.09.2018, p. 306-314.

Research output: Contribution to journalArticle

Far'ain Md Noor, Noor ; Saiful Badri, Muhammad Ashraf ; Mat Salleh, Muhamad ; Akrajas, Ali Umar. / Synthesis of white fluorescent pyrrolic nitrogen-doped graphene quantum dots. In: Optical Materials. 2018 ; Vol. 83. pp. 306-314.
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