RAPET (Reaction under Autogenic Pressure at Elevated Temperatures) Technique Assisted Synthesis of Encapsulated CdE@C [E = S, Se and Te] Nanocrystallites

P. P. George, I. Genish, Shirly Ben David Maklouf, Y. Koltypin, A. Gedanken

Research output: Contribution to journalArticlepeer-review

Abstract

We present an easy synthetic method for the fabrication of encapsulated nanosized semiconductor CdE [E = S, Se and Te] within the core of carbon capsule. We also discuss the growth of CdSC and neat CdS nanocrystals on stainless steel coupons (SSC) by a reaction under autogenic pressure at elevated temperature (RAPET) technique. The thermal decomposition of mixture of Cd(acetate)2 and sulfur, selenium and tellurium was carried out at 750°C under air for 3h. The synthesized products were systematically characterized by X-ray powder diffraction, scanning electron microscopy (SEM) and transmission electron microscopy. Carbon matrix, with an average diameter of 250nm, encapsulated several nanometric-sized CdS nanocrystals, as evidenced from high resolution SEM (HRSEM). We examined the optical properties of this core/shell CdS@C and nonencapsulated CdS nanocrystals and found that both core shell and neat CdS nanocrystals show emission in the pohotoluminescence (PL) spectrum.

Original languageEnglish
Article number1650032
JournalInternational Journal of Nanoscience
Volume16
Issue number3
DOIs
StatePublished - 1 Jun 2017

Bibliographical note

Publisher Copyright:
© 2017 World Scientific Publishing Company.

Keywords

  • Generation
  • nanostructures
  • photoluminescence

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