Size Control and Photoluminescence Enhancement of Mn2+-doped ZnS Nanoparticles Synthesized by AOT- Reverse Micelle Modified by Compressed CO2

Rahizana Mohd Ibrahim, Masturah Markom, Huda Abdullah, Kamal Firdausi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Uniform Mn2+-doped ZnS nanoparticles with reduced surface defects and improved optical properties have been synthesized in a system of AOT-reverse micelle modified by compressed CO2 conditioned at relatively low pressures of 20-60 bars, at constant temperature of 40 oC and H2O/AOT ratio of 7. The results showed that ZnS:Mn2+ nanoparticles were crystallized in a zinc blende structure without any impurity. The calculated particles size of all samples ranged from 2 - 3 nm and the band gap energy values ranged from 4.6 - 5.1 eV. It was found that the synthesized ZnS:Mn2+ nanoparticles have the highest photoluminiscence (PL) intensity ratio of 32.2 at 60 bar. The increase in PL intensity ratio indicated an increase in homogeneity in nanoparticle growth with a decrease in surface defects, which resulted in effective surface modification.

Original languageEnglish
Title of host publicationMaterials Today: Proceedings
PublisherElsevier Ltd
Pages479-484
Number of pages6
Volume3
Edition2
DOIs
Publication statusPublished - 2016

Fingerprint

Micelles
Photoluminescence
Nanoparticles
Surface defects
Surface treatment
Zinc
Energy gap
Optical properties
Particle size
Impurities
Temperature

Keywords

  • Mn-doped ZnS
  • Photoluminescence
  • Reverse micelle
  • Sub-critical CO

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Size Control and Photoluminescence Enhancement of Mn2+-doped ZnS Nanoparticles Synthesized by AOT- Reverse Micelle Modified by Compressed CO2 . / Ibrahim, Rahizana Mohd; Markom, Masturah; Abdullah, Huda; Firdausi, Kamal.

Materials Today: Proceedings. Vol. 3 2. ed. Elsevier Ltd, 2016. p. 479-484.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ibrahim, Rahizana Mohd ; Markom, Masturah ; Abdullah, Huda ; Firdausi, Kamal. / Size Control and Photoluminescence Enhancement of Mn2+-doped ZnS Nanoparticles Synthesized by AOT- Reverse Micelle Modified by Compressed CO2 Materials Today: Proceedings. Vol. 3 2. ed. Elsevier Ltd, 2016. pp. 479-484
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