Luminescence in microcrystalline green emitting Li2Mg1-xZrO4: xTb3+ (0.1 ≤ x ≤ 2.0) Phosphor

Publication date: Available online 18 October 2017 Source:Results in Physics Author(s): V.R. Panse, N.S. Kokode, K.N. Shinde, S.J. Dhoble Green emitting Li 2 Mg1 -x ZrO4:xTb3+ (0.1≤ x ≤ 2.0) phosphor powders were synthesized via the wet chemical synthesis and the luminescent proprieties were studied when excited at 380 nm and present a dominant and strong green luminescence peak at 543 nm, due to D-F transition. The preparation of Li 2 Mg1 -x ZrO4:xTb3+ (0.1≤ x ≤ 2.0) phosphor powders were confirmed by X-ray diffraction (XRD) results without any secondary or impurity phases. The size and morphology of the Li 2 Mg1 -x ZrO4:xTb3+ (0.1≤ x ≤ 2.0) phosphor powders were further examined by scanning electron microscopy (SEM). Photoluminescence (PL) results have shown strongest green emission at 543 nm, which is originated due to 5D4-7F5 transition of Tb3+ ion, for the Li 2 Mg1 -x ZrO4:xTb3+ (0.1≤ x ≤ 2.0) phosphor. The addition of concentration Tb3+ was greatly improved the photoluminescence properties of present phosphors. The present study suggests that the Li 2 Mg1 -x ZrO4:xTb3+ (0.1≤ x ≤ 2.0) phosphor is a strong candidate as a green component for phosphor- converted white light-emitting diodes (LEDs).

Source: Results in Physics - October 19, 2017 Category: Physics Source Type: research