• D.N.Game
• C. B. Palan
• N.B.Ingale
• S.K.Omanwar

We have synthesized LiSrPO4 white emitting phosphors by modified solid state diffusion method doped with different concentration of Dy3+. Crystal structure, surface morphology, photoluminescence properties, concentration quenching, color co-ordinates and other characteristics of these phosphors with reference to SSL are studied. These phosphors exhibit number of excitation peaks in nUV region. Emission spectra have two characteristic narrow bands of Dy3+ at 483 nm (blue) and 574 nm (yellow) in visible spectrum resulting into white light emission with FWHM of these bands is around 20 nm.The XRD pattern of prepared LiSrPO4 phosphor is well matched with the JCPDS file with Card Number 14-0202. Synthesized phosphor particles are of different sizes ranging from less than 1 micron to few microns. The chromaticity coordinate measured as (0.298, 0.342) falls in white region of CIE diagram. This point is in the close vicinity of standard white point D. These results indicates that the synthesized phosphors are promising material for a color converter using nUV LED as the primary light (pumping) source in phosphor converted white LED for solid state lighting.

Solid State Lighting; solid state diffusion method; white phosphor; photoluminescence

"Synthesis and Photoluminescence properties of White Emitting LiSrPO4 Phosphor doped with Dy3+ for Solid State Lighting", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 5, page no.318-324, May-2022, Available :http://www.jetir.org/papers/JETIRFO06056.pdf

"Synthesis and Photoluminescence properties of White Emitting LiSrPO4 Phosphor doped with Dy3+ for Solid State Lighting", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 5, page no. pp318-324, May-2022, Available at : http://www.jetir.org/papers/JETIRFO06056.pdf