Photoluminescence of cerium-doped (Ca1-xSrx) 3RE2Ge3O12 garnet phosphors for solid state lighting: Relating structure to emission

Kalaji, A., Saines, P.J., George, N.C., Cheetham, A.K. (2013) Photoluminescence of cerium-doped (Ca1-xSrx) 3RE2Ge3O12 garnet phosphors for solid state lighting: Relating structure to emission. Chemical Physics Letters, 586 . pp. 91-96. ISSN 0009-2614. (doi:10.1016/j.cplett.2013.09.007) (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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http://dx.doi.org/10.1016/j.cplett.2013.09.007

Abstract

A novel family of cerium-doped garnet oxide phosphors, (Ca 1-xSrx)3RE2Ge3O 12:Ce,Li (2%, 2%) (x=0-1, RE = Y, Lu), was prepared using a conventional high-temperature ceramic route and was found to exhibit green luminescence under blue excitation. These compounds were characterised by synchrotron X-ray diffraction and photoluminescence spectroscopy. The results from this study were compared with other known Ce-doped garnets, including yttrium aluminium garnet, leading to a deeper understanding of the relationship between crystal structure and emission wavelength. In particular, the relationship between Ce3+ emission and the distortion factor of the dodecahedral doping site (d88/d81) was examined.

Item Type: Article
DOI/Identification number: 10.1016/j.cplett.2013.09.007
Uncontrolled keywords: Distortion factor, Emission wavelength, Garnet phosphors, Green luminescence, High temperature, Solid state lighting, Synchrotron x ray diffraction, Yttrium aluminium garnet, Calcium, Cerium, Germanium, Photoluminescence spectroscopy, X ray diffraction, Garnets
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 15:22 UTC
Last Modified: 29 May 2019 16:04 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50717 (The current URI for this page, for reference purposes)
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