Journal of Nanoparticle Research

, Volume 11, Issue 4, pp 1017–1021 | Cite as

Photoluminescence properties of Eu3+-doped Cd1−xZnxS quantum dots

  • Karamjit Singh
  • Sunil Kumar
  • N. K. Verma
  • H. S. Bhatti
Research Paper

Abstract

Eu3+-doped Cd1−xZnxS (0 ≤ x ≤ 0.5) quantum dots (QDs) have been synthesized using wet chemical precipitation method. X-ray diffraction and transmission electron microscope have been used for the crystallographic and morphological characterization of synthesized nanomaterials. In order to understand the spectral characteristics of doped QDs, N2-laser induced time resolved spectra have been recorded. Excited state lifetime values for dichromatic emission (red and violet) attributed to 5D0 → 7FJ (J = 1, 2) transitions of Eu3+ and host lattice transitions have been calculated from the recorded luminescence decay curves. Decay time dependence on the dopant concentration (0.01–10 at. wt% of Cd2+) has been studied in detail.

Keywords

Quantum dots Time resolved spectra Decay time Synthesis Semiconductors 

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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Karamjit Singh
    • 1
  • Sunil Kumar
    • 2
  • N. K. Verma
    • 3
  • H. S. Bhatti
    • 4
  1. 1.Department of Applied SciencesChitkara Institute of Engineering & TechnologyRajpuraIndia
  2. 2.Department of PhysicsMaharishi Markandeshwar UniversityMullanaIndia
  3. 3.School of Physics and Materials ScienceThapar UniversityPatialaIndia
  4. 4.Department of PhysicsPunjabi UniversityPatialaIndia

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