Luminescence investigation of novel MgPbAl₁₀O₁₇:Tb³⁺ green‐emitting phosphor for solid‐state lighting

Abstract

In this work, we studied the luminescence properties of Tb(3+)-doped MgPbAl10O17 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 MgPbAl10O17 phosphor is a strong candidate for a green component in phosphor-converted white light-emitting diodes.

Photoluminescence properties of Ca2Al2O5:RE3+ (RE = Eu, Dy and Tb) phosphors for solid state lighting

“…For excitation at 352 nm, emission at 545 nm was observed and was due to a 5 D 4 → 7 F 5 transition . The emission spectra consisted of strong green emissions that could be useful for solid‐state lighting applications . Whenever the emission wavelength was 545 nm, the excitation spectrum consisted of a band due to the f–f transition of Tb 3+ at the 352 nm wavelength.…”

Synthesis and luminescence study of Eu3+‐doped SrYAl3O7 phosphor

“…Rare‐earth‐doped inorganic phosphors have been an area of research for promising technologies such as light‐emitting diodes (LEDs), solid‐state lighting (SSL), scintillators, solar cells, infrared quantum counter detectors, plasma display panels, and field emission displays . SSL devices based on LEDs currently are promising next generation light sources . LEDs have a 10 times greater lifespan that ordinary lighting systems such as incandescent lamps and compact fluorescent lamps (CFLs).…”