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Eu3+ And Dy3+ Activated Sr2V2O7 Phosphor For Solid State Lighting

Roshani Singh, S.J. Dhoble

Volume 2, Issue 5, Page 341-344, Year 2011 | DOI: 10.5185/amlett.2011.3071am2011

Keywords: Phosphors; Sr2V2O7; solid-state lighting; photoluminescence; XRD

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 5D07F1,5D07F2 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 to4 F 9/26 H 15/2 and 4F 9/26 H 13/2 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. Copyright © 2011 VBRI press.

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