Eu3+ and Dy3+ activated Sr2V2O7 phosphor for solid state lighting Eu3+ and Dy3+ activated Sr2V2O7 phosphor for solid state lighting

Eu3+ and Dy3+ activated Sr2V2O7 phosphor for solid-state lighting

Roshani Singh, S. J. Dhoble*

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

E-mail: sjdhoble@rediffmail.com

Abstract


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 5D07F15D0 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 4F9/26H15/2 and 4F9/26H13/2 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.

Keywords

Phosphors, Sr2V2O7, solid-state lighting, photoluminescence, XRD

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