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Journal of Materials Science

, Volume 51, Issue 11, pp 5252–5258 | Cite as

Synthesis of type-II CdSe(S)/Fe2O3 core/shell quantum dots: the effect of shell on the properties of core/shell quantum dots

  • Fatemeh Mirnajafizadeh
  • Fan Wang
  • Peter Reece
  • John Arron StrideEmail author
Original Paper

Abstract

CdSe(S)/Fe2O3 core/shell quantum dots (QDs) were prepared in an aqueous synthetic route. These were shown to be highly crystalline nanoparticles using X-ray diffraction and HRTEM, whilst optical spectroscopy showed that the particles exhibited highly photoluminescent emissions. A red shift in the emission wavelength of CdSe(S) QDs coated with Fe2O3 was observed, despite the crystal structure of the core remaining intact after coating with ferric oxide, indicating a direct influence of the shell on the electronic levels of the QD core. The effects of the shell on the optical properties of core/shell QDs of these type-II CdSe(S)/Fe2O3 QDs are rationalised by comparison to type-I CdSe(S)/ZnO QDs.

Keywords

Fe2O3 Select Area Electron Diffraction Zinc Oxide Excited Electron Ferric Oxide 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

We would like to thank the School of Chemistry for the financial support, and the School of Physics and the Mark Wainwright Analytical Centre of University of New South Wales for facilities.

Supplementary material

10853_2016_9828_MOESM1_ESM.docx (1.1 mb)
Supplementary material 1 (DOCX 1163 kb)

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Fatemeh Mirnajafizadeh
    • 1
  • Fan Wang
    • 2
  • Peter Reece
    • 2
  • John Arron Stride
    • 1
    • 3
    Email author
  1. 1.School of ChemistryUniversity of New South WalesSydneyAustralia
  2. 2.School of PhysicsUniversity of New South WalesSydneyAustralia
  3. 3.Bragg InstituteAustralian Nuclear Science and Technology OrganisationMenaiAustralia

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