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Fluorescence Study of Eu-YVO4 Nano-Phosphors as a Function of Calcination Temperature and Excitation Wavelengths

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Abstract

Nano phosphors have been prepared with 1 mol % and 5 mol % doping of Eu in vanadate by sol-gel method. X-ray pattern indicated that nano phosphors did not lead to phase change and has tetragonal crystal structure. Excitation spectra revealed that the band at 308 nm arises due to the charge transfer transitions among Eu3+ and VO4 3- ions. The peak position of fluorescence shifted from 518 to 638 nm on varying the excitation wavelength from 257 nm to 318 nm. It is also noticed that the fluorescence intensity increases with the rise of calcination temperatures of the samples.

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Acknowledgments

The authors thank to NIT Hamirpur for providing the financial assistance to carry out the present work. The author (Shashi Thakur) send gratitude to the Department of Higher Education, Government of Himachal Pradesh for granting the study leave.

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Authors and Affiliations

  1. Department of Physics, National Institute of Technology, Hamirpur, HP, 177005, India

    Shashi Thakur & Arvind K. Gathania

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  1. Shashi Thakur
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  2. Arvind K. Gathania
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Correspondence to Arvind K. Gathania.

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Thakur, S., Gathania, A.K. Fluorescence Study of Eu-YVO4 Nano-Phosphors as a Function of Calcination Temperature and Excitation Wavelengths. J Fluoresc 25, 657–661 (2015). https://doi.org/10.1007/s10895-015-1551-z

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  • DOI: https://doi.org/10.1007/s10895-015-1551-z

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