Eu(II) luminescence in the perovskite host lattices KMgH3, NaMgH3 and mixed crystals LiBaxSr1−xH3

N. Kunkel; A. Meijerink; M. Springborg; H. Kohlmann

doi:10.1039/C4TC00644E

Eu(ii) luminescence in the perovskite host lattices KMgH₃, NaMgH₃ and mixed crystals LiBa_xSr_1−xH₃†

N. Kunkel,*^a A. Meijerink,^b M. Springborg^ac and H. Kohlmann*^d

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* Corresponding authors

^a FR 8.1 Saarland University, P. O. Box 151150, 66041 Saarbrücken, Germany
E-mail: n.kunkel@mx.uni-saarland.de

^b Debye Institute, Utrecht University, P. O. Box 80 000, 3508 TA Utrecht, The Netherlands

^c School of Materials Science and Engineering, Tianjin University, Tianjin, People’s Republic of China

^d Leipzig University, Johannisallee 29, 04103 Leipzig, Germany
E-mail: holger.kohlmann@uni-leipzig.de

Abstract

Bright luminescence of Eu(II) doped into the cubic perovskites KMgH₃ and mixed crystal compounds LiBa_xSr_1−xH₃ was observed and assigned to the 4f⁶5d–4f⁷ emission of Eu²⁺. KMgH₃:Eu²⁺ shows an extremely bright yellow emission, whereas the wavelength of the emission maximum in LiBa_xSr_1−xH₃:Eu²⁺ depends on the value of x and ranges from yellow to green. Furthermore, an extremely wide red shift in the emission energy is observed for the orthorhombically distorted perovskite NaMgH₃:Eu²⁺. Additionally, we review the crystal structure of KMgH₃ using density functional calculations.

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Article information

DOI: https://doi.org/10.1039/C4TC00644E
Article type: Paper
Submitted: 30 Mar 2014
Accepted: 25 Apr 2014
First published: 28 Apr 2014
This article is Open Access

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J. Mater. Chem. C, 2014,2, 4799-4804

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Eu(II) luminescence in the perovskite host lattices KMgH₃, NaMgH₃ and mixed crystals LiBa_xSr_1−xH₃

N. Kunkel, A. Meijerink, M. Springborg and H. Kohlmann, J. Mater. Chem. C, 2014, 2, 4799 DOI: 10.1039/C4TC00644E

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Journal of Materials Chemistry C