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Luminescence of $Ce^{3+}$ -doped aluminoborates, $M_3Al_6B_8O_{24}$ (M = Mg, Ca, Sr, Ba)

Kutty, TRN (1990) Luminescence of $Ce^{3+}$ -doped aluminoborates, $M_3Al_6B_8O_{24}$ (M = Mg, Ca, Sr, Ba). In: Materials Research Bulletin, 25 (3). pp. 343-348.

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Abstract

Newer dielectric materials doped with appropriate impurities are often sought for tunable blue laser applications. Thus, the luminescence properties of $Ce^{3+}$ in the novel ternary borates, $M_3Al_6B_8O_{24}$ (M = Mg, Ca, Sr, Ba) have been investigated. The single excitation band centred around 310 nm and the broad emission band maximising around 400 nm are devoid of the characteristic $Ce^{3+}$ doublet and the vibrational fine structures, even at low temperatures. These luminescence features are due to the extensive crystal-field splitting of the 4f ground state. The large Stokes shift of $\sim7000cm^{-1}$ and the half-band-widths are influenced by $M^{2+}$ ions.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: alkaline earths;aluminoborates;cerium
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Depositing User: Ramya Krishna
Date Deposited: 24 Sep 2007
Last Modified: 19 Sep 2010 04:39
URI: http://eprints.iisc.ac.in/id/eprint/11901

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