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Optical characterization of CdSe/Dy3+-doped silica matrices

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Abstract

Cadmium selenide nanocrystals along with dysprosium ions are doped in silica matrices through sol-gel route. The optical bandgap and size of the CdSe nanocrystals are calculated from the absorption spectrum. The size of the CdSe nanocrystallites is also evaluated from the TEM measurements. The fluorescence intensities are compared for SiO2-Dy3+ and CdSe-doped SiO2-Dy3+. The fluorescence intensity of Dy3+ is considerably increased in the presence of CdSe nanocrystals.

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Authors and Affiliations

  1. School of Pure & Applied Physics, Mahatma Gandhi University, Kottayam, 686 560, India

    P. V. Jyothy, S. Kartika & N. V. Unnikrishnan

  2. Department of Physics, T.K.M.M. College, Nangiarkulangara, Alapuzha, 690 513, India

    P. R. Rejikumar

  3. Department of Physics, Christian College, Chengannur, 689 122, India

    Thomas Vinoy

Authors
  1. P. V. Jyothy
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  2. P. R. Rejikumar
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  3. Thomas Vinoy
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  4. S. Kartika
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  5. N. V. Unnikrishnan
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Correspondence to N. V. Unnikrishnan.

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Jyothy, P.V., Rejikumar, P.R., Vinoy, T. et al. Optical characterization of CdSe/Dy3+-doped silica matrices. Pramana - J Phys 75, 999–1004 (2010). https://doi.org/10.1007/s12043-010-0187-4

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  • DOI: https://doi.org/10.1007/s12043-010-0187-4

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