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Luminescence of Ce3+-sensitized and Dy3+-activated aluminoborates, M3Al6B8O24 (M = Ca, Ba)

Kutty, TRN (1990) Luminescence of Ce3+-sensitized and Dy3+-activated aluminoborates, M3Al6B8O24 (M = Ca, Ba). In: Materials Research Bulletin, 25 (4). pp. 485-493.

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Official URL: http://dx.doi.org/10.1016/0025-5408(90)90184-4

Abstract

The near white emission of $Dy^3^+$ is remarkably sensitized by $Ce^3^+$ when present together in the recently reported aluminoborates, $M_3Al_6B_8O_2_4$ $(M = Ca, Ba)$. Energy transfer from $Ce^3^+$ to $Dy^3^+$ at 300K has been examined. The multiplicity of the $Ce^3^+$ excitation band of $Ce^3^+ + Dy^3^+$ containing phosphors and its concentration dependance point to the prevalence of rare earth $(RE^3^+)$ ion pairs. More efficient energy migration to $Dy^3^+$ takes place from $Ce^3^+ - Ce^3^+$ pair than from isolated $Ce^3^+$ . The results indicate the role of borate group in the interaction between $RE^3^+$ ions.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: calcium;aluminium;borates;phosphors;dysprosium
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Depositing User: Ramya Krishna
Date Deposited: 28 Jun 2007
Last Modified: 17 Jan 2012 09:45
URI: http://eprints.iisc.ac.in/id/eprint/11309

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