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

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Abstract

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.

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Acknowledgements

Authors are grateful to RSIC, Punjab University, Chandigarh and especially Mr. Jagtar Singh for crystallographic and morphological studies.

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Authors and Affiliations

  1. Department of Applied Sciences, Chitkara Institute of Engineering & Technology, Rajpura, 140 401, Punjab, India

    Karamjit Singh

  2. Department of Physics, Maharishi Markandeshwar University, Mullana, 133 230, Haryana, India

    Sunil Kumar

  3. School of Physics and Materials Science, Thapar University, Patiala, 147 004, Punjab, India

    N. K. Verma

  4. Department of Physics, Punjabi University, Patiala, 147 002, Punjab, India

    H. S. Bhatti

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  1. Karamjit Singh
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  2. Sunil Kumar
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  3. N. K. Verma
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  4. H. S. Bhatti
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Correspondence to H. S. Bhatti.

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Singh, K., Kumar, S., Verma, N.K. et al. Photoluminescence properties of Eu3+-doped Cd1−x Zn x S quantum dots. J Nanopart Res 11, 1017–1021 (2009). https://doi.org/10.1007/s11051-009-9586-1

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  • DOI: https://doi.org/10.1007/s11051-009-9586-1

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