Photo Luminescent Properties of Dysprosium-Dy3+ Doped Ba3Y(BO3)3 Phosphor

Ba3Y1-x(BO3)3:xDy3+[ 0.005 ≤ x ≤ 0.03 ] phosphor is synthesized by solution combustion method. Photo- luminescence in the range 400nm to 700nm is recorded which shows two major peaks at 485nm [4F9/2 – 6H15/2], 575nm [4F9/2 – 6H13/2] and minor peak at 622nm 4F9/2 – 6H11/2. Under UV excitation of 349nm it shows white luminescence. Intensity ratio of Blue line of 485nm to yellow line of 575nm is calculated which also confirms the emission of near white light. The optimal doping concentration of Dy3+ in Ba3Y1-x(BO3)3 host matrix is found to be 2 mole percentage.The 1931-CIE color coordinates and the CCT value of phosphor is also calculated using McCamy empirical formula. All the results indicate that Dy3+ doped Ba3Y1-x(BO3)3 powder phosphor could be used as an efficient luminescent material for solid state lighting as well as NUV based w-LEDs.