Journal of Nanoparticle Research

, Volume 11, Issue 4, pp 1017–1021

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

Authors

  • Karamjit Singh
    • Department of Applied SciencesChitkara Institute of Engineering & Technology
  • Sunil Kumar
    • Department of PhysicsMaharishi Markandeshwar University
  • N. K. Verma
    • School of Physics and Materials ScienceThapar University
    • Department of PhysicsPunjabi University
Research Paper

DOI: 10.1007/s11051-009-9586-1

Cite this article as:
Singh, K., Kumar, S., Verma, N.K. et al. J Nanopart Res (2009) 11: 1017. doi:10.1007/s11051-009-9586-1

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 dotsTime resolved spectraDecay timeSynthesisSemiconductors

Copyright information

© Springer Science+Business Media B.V. 2009