Research Paper

Journal of Nanoparticle Research

, Volume 11, Issue 4, pp 1017-1021

First online:

Photoluminescence properties of Eu3+-doped Cd1−x Zn x S quantum dots

  • Karamjit SinghAffiliated withDepartment of Applied Sciences, Chitkara Institute of Engineering & Technology
  • , Sunil KumarAffiliated withDepartment of Physics, Maharishi Markandeshwar University
  • , N. K. VermaAffiliated withSchool of Physics and Materials Science, Thapar University
  • , H. S. BhattiAffiliated withDepartment of Physics, Punjabi University Email author 

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Eu3+-doped Cd1−x Zn x S (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.


Quantum dots Time resolved spectra Decay time Synthesis Semiconductors