Red Photoluminescence from Fe-Doped MgAl2O4 Crystals

被引：0

作者：

Hitomi, Ami ^{[1
]}

Mori, Arisa ^{[2
]}

Watanabe, Ririka ^{[2
]}

Katsumata, Toru ^{[1
,2
]}

Aizawa, Hiroaki ^{[1
,2
]}

机构：

[1] Toyo Univ, Grad Sch Sci & Engn, Kawagoe, Saitama 3508585, Japan

[2] Toyo Univ, Fac Sci & Engn, Kawagoe, Saitama 3508585, Japan

来源：

ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY | 2024年 / 13卷 / 05期

关键词：

luminescence; -; spectroscopy; phosphors; synthesis; characterization; ceramic; SPINEL CRYSTALS; SPECTROSCOPY; LUMINESCENCE; CR3+; TI;

D O I：

10.1149/2162-8777/ad497b

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of variations in composition (x = MgO/Al2O3 = 0.3-1.0), Fe2O3 concentrations (0.05 mol%-2.0 mol%), and O-2 concentrations (100 vol% and 0 vol%) in the atmosphere on the PL characteristics of Fe-doped MgAl2O4 crystals were investigated using single phase spinel crystals grown by FZ technique. The peak wavelength shift of photoluminescence at around 730 nm are observed depending on the Fe2O3 concentration and composition. Concentration quenching of red PL occurred at Fe2O3 concentration above 0.1 mol%. PL intensity was higher in samples grown in 100 vol% O-2 compared to those grown in 100 vol% Ar. PL intensity from Fe-doped MgAl2O4 increased with increasing compositions x from 0.3 to 1.0. MgAl2O4 doped with 0.1 mol% Fe2O3, and a stoichiometric composition (x = 1.0) grown in 100 vol% O-2, demonstrated strong red PL with ultraviolet-C (UVC) lights excitation.

引用

页数：5

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