Chia-Pin Lin1, Sheng-Tsong Chen1 and Teng-Ming Chen This email address is being protected from spambots. You need JavaScript enabled to view it.1 1Department of Applied Chemistry National Chiao Tung University Hsinchu, Taiwan 300, R.O.C.
Received:
April 1, 2002
Accepted:
May 6, 2002
Publication Date:
June 1, 2002
Download Citation:
||https://doi.org/10.6180/jase.2002.5.2.02
Alkaline earth (M) dialuminodiborates have been reported to be hosts with better crystallinity, lower synthetic temperature and higher radiant efficiency, compared to corresponding borates or aluminates. This research was attempted to investigate the effect of host compositions on the photoluminescent properties of SrAl2B2O7:Eu2+ phases by systematically substituting Sr2+ with M2+ (M = Ca, Ba) ions. The emission of Eu2+ attributed to the 4f6 5d1 → 4f7 transition was found to be very sensitive to the changes of crystal field of the host due to Ca2+ and Ba2+ substitution, as indicated by the photoluminescence (PL) spectra. The synthesis, dopant-content dependent PL spectra and the decay lifetimes for M-substituted SrAl2B2O7:Eu2+ are presented in this paper. ABSTRACT
Keywords:
(Sr,Ca)Al2B2O7:Eu2+, (Sr,Ba)Al2B2O7:Eu2+, Photoluminescence Spectra, Host Composition Effect, Fluorescence Decay Lifetime
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