Green synthesis of anisotropic CdSe nanocrystals via a non-phosphine based method

Vuyelwa Ncapayi, Oluwatobi S. Oluwafemi

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We herein report the synthesis of highly luminescent anisotropic CdSe nanocrystals (NPs) via a non-trioctylphosphine (TOP) based method in an open air. The synthesis involved the reaction between oleic acid cadmium oxide complex as cadmium precursor and selenium precursor produced via in situ dehydrogenation of paraffin liquid by selenium powder. By varying the reaction time, the temporal evolutions of the optical and structural properties of the as-synthesised CdSe nanocrystals (NCs) were investigated. Optical analyses show that all the as-synthesised CdSe NCs possess good optical properties and emit in the green region with band edge luminescence, defined excitonic peaks, narrow emission width and high quantum yield (QY). The electron microscopy micrographs shows that small, spherical and monodispersed particles are produced at the beginning of the reaction while mixtures of isotropic and anisotropic structures (prism, rod and hexagonal) are produced as the reaction progressed. The Fourier transform infrared spectroscopy (FTIR) analysis confirmed the effective capping of oleic acid.

Original languageEnglish
Pages (from-to)168-171
Number of pages4
JournalMaterials Letters
Publication statusPublished - 1 May 2017


  • Anisotropic
  • CdSe
  • Electron microscopy
  • Green synthesis
  • Non-phosphine method

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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