1National Environmental Engineering Research Institute, Nagpur 440020, India
2Department of Physics, R.T.M. Nagpur University, Nagpur 440033, India
Adv. Mater. Lett., 2011, 2 (5), pp 341-344
DOI: 10.5185/amlett.2011.3071am2011
Publication Date (Web): Apr 08, 2012
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E-mail: sjdhoble@rediffmail.com
Eu3+ and Dy3+ doped strontium vanadium oxide (Sr2V2O7) phosphor has been successfully synthesized using solid state diffusion method and characterized by XRD as well as photoluminescence (PL) measurements. The PL emission of Eu3+ ion was observed in Sr2V2O7 phosphor at 593 nm and 618 nm in orange and red region of the spectrum, which corresponds to 5D0→ 7F1, 5D0→ 7F2 transitions, at the excitation wavelength of 393 nm. The PL emission of Dy3+ ion was observed in Sr2V2O7 phosphor at 484 nm and 575 nm in blue and yellow region of the spectrum, which corresponds to 4F9/2→ 6H15/2 and 4F9/2 → 6H13/2 transitions, at the excitation wavelength of 349 nm. The 300 – 400 nm is Hg free excitation, which is characteristic of solid state lighting. Hence, Sr2V2O7 :RE [RE = Eu3+ and Dy3+] phosphors may be efficient materials for solid state lighting.
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