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Issue 9, 2016
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Spectroscopic properties and location of the Ce3+ energy levels in Y3Al2Ga3O12 and Y3Ga5O12 at ambient and high hydrostatic pressure

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Abstract

In this study, we present the high pressure spectroscopy of Y3Al2Ga3O12 (YAGG) and Y3Ga5O12 (YGG) ceramics doped with Ce3+ and Cr3+. We have found that high hydrostatic pressure recovers the Ce3+ luminescence in YGG. The pressure-induced shifts of the ground state and the 5d1 excited state of Ce3+ with respect to the conduction band edge were estimated. Our experimental data allowed us to also obtain the shifts of the conduction and valence band edges, and the ground state and the 5d1 state of Ce3+ ions have been estimated with respect to the vacuum level. It has been shown that simple equivalence between the external hydrostatic pressure and intrinsic chemical pressure related to different compositions of the isostructural matrices does not exist in garnet lattices.

Graphical abstract: Spectroscopic properties and location of the Ce3+ energy levels in Y3Al2Ga3O12 and Y3Ga5O12 at ambient and high hydrostatic pressure

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Publication details

The article was received on 15 Dec 2015, accepted on 30 Jan 2016 and first published on 01 Feb 2016


Article type: Paper
DOI: 10.1039/C5CP07732J
Citation: Phys. Chem. Chem. Phys., 2016,18, 6683-6690
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    Spectroscopic properties and location of the Ce3+ energy levels in Y3Al2Ga3O12 and Y3Ga5O12 at ambient and high hydrostatic pressure

    S. Mahlik, A. Lazarowska, J. Ueda, S. Tanabe and M. Grinberg, Phys. Chem. Chem. Phys., 2016, 18, 6683
    DOI: 10.1039/C5CP07732J

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