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Synthesis and luminescence properties of CaGd2(MoO4)(4):Dy3+, Eu (3+), Tm3+ phosphors for warm white UV LEDs

Jaganathan, Saravana Kumar and Peter, Anthuvan John (2018) Synthesis and luminescence properties of CaGd2(MoO4)(4):Dy3+, Eu (3+), Tm3+ phosphors for warm white UV LEDs. Journal of Electronic Materials, 47 (10). pp. 6210-6220. ISSN 0361-5235

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Official URL: https://link.springer.com/article/10.1007/s11664-0...

Abstract

A series of Dy3+, Eu3+, and Tm3+-activated CaGd2(MoO4)4 (CGM) ovoid-like microstructured phosphors have been successfully prepared using an ethylenediamine tetraacetic acid-assisted hydrothermal method at 200°C for 24 h. The crystal structure, phase, morphology, composition, and luminescence properties of the phosphors were characterized by x-ray diffraction analysis, energy-dispersive spectrometry, field-emission scanning electron microscopy, photoluminescence (PL) spectroscopy, and lifetime measurements. Under ultraviolet excitation, the rare-earth-ion activated CGM phosphors exhibited characteristic PL properties. Efficient and strong energy transfer processes from Eu3+ to Dy3+ and from Tm3+ to Dy3+ were demonstrated. The CGM:Dy3+, Eu3+, Tm3+ phosphors exhibited strong color-tunable emission and warm white light, having great potential for application in white light-emitting diodes.

Item Type:Article
Uncontrolled Keywords:energy transfer, lifetime
Subjects:Q Science > QH Natural history
Divisions:Biosciences and Medical Engineering
ID Code:84268
Deposited By: Siti Nor Hashidah Zakaria
Deposited On:16 Dec 2019 11:22
Last Modified:16 Dec 2019 11:22

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