Luminescence investigation of novel MgPbAl 10 O 17 :Tb 3+ green‐emitting phosphor for solid‐state lighting

In this work, we studied the luminescence properties of Tb 3+ ‐doped MgPbAl 10 O 17 green phosphor. To understand the excitation mechanism and corresponding emission of the prepared phosphor, its structural, morphological and photoluminescence properties were investigated. In general, for green emission, Tb 3 is used as an activator and the obtained excitation and emission spectra indicated that this phosphor can be effectively excited by a wavelength of 380 nm, and exhibits bright green emission centered at 545 nm corresponding to the f → f transition of trivalent terbium ions. The chromaticity coordinates were ( C x = 0.263, C y = 0.723). The impact of Tb 3+ concentration on the relative emission intensity was investigated, and the best doping concentration was found to be 2 mol%. This study suggests that Tb 3+ ‐doped MgPbAl 10 O 17 phosphor is a strong candidate for a green component in phosphor‐converted white light‐emitting diodes. Copyright © 2015 John Wiley & Sons, Ltd.