Photoluminescence properties of LiTi 2 − x Eu x (PO 4 ) 3  phosphor | Zendy

Ramaraghavulu R. | Zendy; Naresh V. | Zendy; Eswaraiah V. | Zendy

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Photoluminescence properties of LiTi 2 − x Eu x (PO 4 ) 3 phosphor

Author(s) -

Ramaraghavulu R.,

Naresh V.,

Eswaraiah V.

Publication year - 2017

Publication title -

luminescence

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.428

H-Index - 45

eISSN - 1522-7243

pISSN - 1522-7235

DOI - 10.1002/bio.3141

Subject(s) - phosphor , chromaticity , luminescence , photoluminescence , excited state , analytical chemistry (journal) , ion , electric dipole transition , emission spectrum , excitation , magnetic dipole transition , materials science , dipole , chemistry , atomic physics , magnetic dipole , spectral line , optoelectronics , optics , physics , organic chemistry , chromatography , astronomy , quantum mechanics

A solid‐state reaction route‐based LiTi 2 − x Eu x (PO 4 ) 3 was phosphor synthesized for the first time to evaluate its luminescence performance by excitation, emission and lifetime (τ) measurements. The LiTi 2 − x Eu x (PO 4 ) 3 phosphor was excited at λ exci. = 397 nm to give an intense orange–red (597 nm) emission attributed to the 5 D 0 → 7 F 1 magnetic dipole (ΔJ = ±1) transition and red (616 nm) emission ( 5 D 0 → 7 F 2 ), which is an electric dipole (ΔJ = ±2) transition of the Eu 3+ ion. Beside this, excitation and emission spectra of host LiTi 2 (PO 4 ) 3 powder were also reported. The effect of Eu 3+ concentration on luminescence characteristics was explained from emission and lifetime profiles. Concentration quenching in the LiTi 2 − x Eu x (PO 4 ) 3 phosphor was studied from the Dexter's model. Dipole–quadrupole interaction is found to be responsible for energy transfer among Eu 3+ ions in the host lattice. The LiTi 2 − x Eu x (PO 4 ) 3 phosphor displayed a reddish‐orange colour realized from a CIE chromaticity diagram. We therefore suggest that this new phosphor could be used as an optical material of technological importance in the field of display devices. Copyright © 2016 John Wiley & Sons, Ltd.

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