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Photo and Cathodoluminescence in Cerium-Activated Yttrium-Aluminium Borates

Published online by Cambridge University Press:  14 March 2011

V. Z. Mordkovich
V. Z. Mordkovich*
Affiliation:
Intl Center for Materials Research, KSP East 601, Takatsu-ku, Kawasaki 213-0012, Japan
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Abstract

Ce3+ luminescence in Ce-activated yttrium aluminium borates was studied. Photoluminescnece was excited by continuous-wave UV or by pulse laser irradiation. Cathodoluminescence was excited at the acceleration voltage in the range 5 to 600 V. These phosphors show under continuous wave UV excitation three emission peaks: in near UV, deep blue and light blue ranges. The light blue peak at around 490 nm which may be connected to forbidden 2D3/2 → 2F7/2 transition appears in continuous wave-excited photoluminescence only and does not appear in cathodoluminescence nor under pulse excitation. The blue-emitting Ce- activated yttrium aluminium borates exhibit unusually strong activator ion-host lattice interaction. As a result a substantial red shift in the emission is induced by Ce concentration increase and complicated concentration dependence of the emission intensity is observed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 621: Symposia Q/R – Electron-Emissive Materials, Vacuum Microelectronics… , 2000 , Q5.1.1
Copyright
Copyright © Materials Research Society 2000

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References

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