Structure-property correlations in Eu-doped tetra calcium phosphate phosphor: A key to solid-state lighting application

Komuro, N., Mikami, M., Saines, P.J., Cheetham, A.K. (2015) Structure-property correlations in Eu-doped tetra calcium phosphate phosphor: A key to solid-state lighting application. Journal of Luminescence, 162 . pp. 25-30. ISSN 0022-2313. (doi:10.1016/j.jlumin.2015.02.006) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1016/j.jlumin.2015.02.006

Abstract

The unique emission characteristics and the crystal structure of Ca4(PO4)2O:Eu2+ were studied. Considerably broad emission from 500 nm to 800 nm was measured at 77 K when the material was excited at 365 nm. Its crystal structure was refined using neutron diffraction, allowing precise and accurate oxygen positions to be determined. This enabled a relationship between the optical properties and the crystal structure crucial for achieving a large redshift of the 5d level of Eu2+ to be established, which is important to match the excitation energy band with near-ultraviolet or blue light-emitting-diodes used for solid-state lighting. The importance of the anion polarizability and the distortion of the coordination polyhedron were also discussed.

Item Type: Article
DOI/Identification number: 10.1016/j.jlumin.2015.02.006
Uncontrolled keywords: Eu2+, Light-emitting-diode, Phosphate, Phosphor, Solid-state lighting, Calcium, Europium, Excited states, Light emission, Light emitting diodes, Lighting, Neutron diffraction, Optical properties, Phosphates, Phosphors, Blue light emitting diodes, Coordination polyhedra, Emission characteristics, Phosphate phosphor, Polarizabilities, Solid state lighting, Solid-state lighting application, Structure-property correlation, Crystal structure
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Paul Saines
Date Deposited: 06 Oct 2015 15:19 UTC
Last Modified: 29 May 2019 16:04 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50715 (The current URI for this page, for reference purposes)
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