標題: A study on the luminescence properties of CaAlBO(4): RE(3+) (RE=Ce, Tb, and Eu) phosphors
作者: Liu, Wei-Ren
Chiu, Yi-Chen
Tung, Chien-Yueh
Yeh, Yao-Tsung
Jang, Shyue-Ming
Chen, Teng-Ming
應用化學系
Department of Applied Chemistry
公開日期: 2008
摘要: A series of new phosphors of CaAlBO(4):RE(3+) (RE=Ce, Tb, Eu) were synthesized by conventional solid-state reactions. The X-ray diffraction data indicate that a pure phase of CaAlBO(4):RE(3+) can be successfully obtained. The photoluminescence (PL) spectra, quantum efficiency, and CIE coordinates of CaAlBO(4):RE(3+) were investigated. The PL and PL excitation spectra indicate that the emission wavelengths of CaAlBO(4):Ce(3+) are 372 and 398 nm (with full width at half maximum of 33 nm) attributed to the 4f(6)5d-4f(7) transition of the Ce(3+) activator, respectively. CaAlBO(4):Tb(3+) displays green emission at 483, 543, 584, and 620 nm, while CaAlBO(4):Eu(3+) shows a dominating emission peak at 621 nm, which is attributed to the Eu(3+) (5)D(0)-(7)F(2) transition. The quantum efficiencies of optimized CaAlBO(4):Ce(3+), CaAlBO(4):Tb(3+), and CaAlBO(4):Eu(3+) were found to be 43, 21, and 19%, respectively. The phosphors may provide a new kind of luminescent material under UV excitation. (C) 2008 The Electrochemical Society.
URI: http://hdl.handle.net/11536/9903
http://dx.doi.org/10.1149/1.2953499
ISSN: 0013-4651
DOI: 10.1149/1.2953499
期刊: JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume: 155
Issue: 9
起始頁: J252
結束頁: J255
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