The luminescence efficiency of green phosphor Ca7(PO4)2(SiO4)2:Eu2+ for white light-emitting diode

<span><span>This study examines the green-emission phosphor composition of Eu²⁺ doped Ca₇(PO₄)₂(SiO₄)₂to serve the goal of efficiency enhancement for the white light emitting diode (LED). The process of preparation and photoluminescent investigation of proposed phosphor composition was monitored under near UV excitation wavelength of the LED die. The sample phase was determined using XRD. To explore Ca₇(PO₄)₂(SiO₄)₂:Eu²⁺ capabilities, the diffuse reflectance and photoluminescence spectral figures were employed. The ultraviolet absorption of Ca₇(PO₄)₂(SiO₄)₂:Eu²⁺ranged from 240 to 440 nm, with a wide band of green emission peaking at 522 nm. Besides the concentration quenching mechanism, we also focus on essential characteristics for </span></span>white-light-emitting diode<span><span><br /></span></span><span>(WLED) production like temperature-dependent lumen output and chromaticity coordinates</span><span>.</span>