Abstract
The well-known solid-state reaction method is used for the synthesis of Tb doped LuGd2Ga2Al3O12 phosphor. XRD and SEM techniques are used for the phase and structural morphology of the synthesized phosphor. UV, X-ray and proton induced spectroscopy is used to study the luminescence properties. LuGd2Ga2Al3O12:Tb3+ phosphor shows its highest peak in green and blue region. The two major emission peaks correspond to 5D3→7FJ (at 480 to 510 nm, blue region) and 5D4→7FJ (at 535 to 565 nm, green region). Green emission is dominant; therefore, it may be used as an efficient green phosphor. The absorption spectra of the synthesized material matches well with the spectra of light emitting diodes (LEDs); therefore, it may have applications in LEDs. X-ray spectroscopic study suggests that this phosphor may have uses in medical applications, such as X-ray imaging. The synthesized phosphor exhibits 81% efficacy in comparison to the commercial plasma display panel material (Gd2O2S:Tb3+). The Commission Internationale de l’Eclairage (CIE) chromaticity diagram is obtained for this phosphor. The decay time of ms range is measured for the synthesized phosphor.
Highlights
Rare-earth doped yttrium aluminum garnet (YAG) is a well-known commercially used phosphor due to its brilliant luminescence properties [1,2]
X ray spectroscopy shows highest emission peak at 550 nm, which is the result of UV Spectroscopy
The synthesized phosphor is investigated for its UV, X-ray, and proton induced luminescence
Summary
Rare-earth doped yttrium aluminum garnet (YAG) is a well-known commercially used phosphor due to its brilliant luminescence properties [1,2]. YAG has been studied extensively for the past few decades. Owing to the promising photoluminescence properties of trivalent terbium ion, contributed to green phosphors, has been investigated for last few decades. Green emission of Tb-doped borate phosphor has been investigated [7,8]. Tb doped borates (LiBaB9 015 ) give dominant green luminescent peak at 542 nm [9]. Tb has shown much better luminescence when doped in YAG. LuGd2 Ga2 Al3 O12 is one of the LuAG phases that is less studied. This work consists of synthesis and luminescence study of Tb doped LuGd2 Ga2 Al3 O12 phosphor
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