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Preparation of a New Red Long Afterglow Phosphor Strontium Aluminate Composition

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Abstract:

A new red afterglow phosphor Sr3Al2O6: Eu2+, Dy3+ was synthesized by solid-state reaction and sintered at 1150°C for 2h in reducing atmosphere. Red long lasting phosphorescence of the prepared materials is observed in the dark with naked eye after the removal of the excitation light. From the photoluminescence spectra, the broad emission band centered at 612 nm is confirmed. Excitation band chiefly lies in visible range and its maximum peak is at 473nm. Luminescence mechanism is studied.

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High-Performance Ceramics IV View Preview

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Periodical:

Key Engineering Materials (Volumes 336-338)

Pages:

616-618

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.336-338.616

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Online since:

April 2007

Authors:

Ping Zhang, Ming Xia Xu, Jin Wei Zhao, Yu Xing Qin, Yi Wei Lv

Keywords:

Emission Spectrum, Excitation Spectra, Red Long Afterglow, Strontium Aluminate

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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