Compositional variation of photoluminescence from Mn doped MgAl2O4 spinel

被引：17
|
作者：
Sakuma, Takashi [1 ]
Minowa, Shunsuke [1 ]
Katsumata, Toru [2 ]
Komuro, Shuji [2 ]
Aizawa, Hiroaki [2 ]
机构：
[1] Toyo Univ, Grad Sch Engn, Kawagoe, Saitama 3508585, Japan
[2] Toyo Univ, Fac Sci & Engn, Kawagoe, Saitama 3508585, Japan
来源：
OPTICAL MATERIALS | 2014年 / 37卷
关键词：
Mn doped spinel; Photoluminescence spectrum; Composition; Fluorescence thermometer; Phosphor; GROWTH;
D O I：
10.1016/j.optmat.2014.06.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Spinel (MgAl2O4) crystals doped with 1.0% Mn have been grown by floating zone (FZ) technique with various Mg compositions, x = MgO/Al2O3, from 0.2 to 1.0. Compositional variations of photoluminescence are evaluated for a fluorescence thermometer application using crystals grown. Strong photoluminescence (PL) peak is observed at lambda from 512 to 520 nm from the crystals grown from compositions, x, from 0.3 to 1.0. Peak wavelength of PL increases linearly from 512 to 520 nm with x. Weak PL peaking at lambda= 750 nm is also observed from the specimens. Compositional variations of PL are considered to be due to the variation of crystal field surrounding the Mn2+ ions. The variation of crystal field strength agrees with the compositional variation of lattice constant. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：302 / 305
页数：4
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