Investigation on direct-current-driven inorganic electroluminescence in rare-earth and Li co-doped ZnO pellets

被引：3
|
作者：
Yoshida, Midori [1 ]
Sato, Tomoki [1 ]
Hoshi, Tomohiro [1 ]
Takahashi, Hirotaka [1 ]
Ito, Michimasa [2 ]
Kurihara, Masato [3 ]
Sakamoto, Masatomi [3 ]
Matsushima, Yuta [1 ]
机构：
[1] Yamagata Univ, Dept Chem & Chem Engn, 4-3-16 Jonan, Yonezawa, Yamagata 9928510, Japan
[2] Tokai Rika Co Ltd, 3-260 Toyota, Oguchi, Aichi 4800195, Japan
[3] Yamagata Univ, Fac Sci, 1-4-12 Kojirakawa Machi, Yamagata, Yamagata 9908560, Japan
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2019年 / 240卷
关键词：
Direct-current inorganic EL; Zinc oxide; Rare earth; Lithium; Multilayered pellet; DC ELECTROLUMINESCENCE; ZINC-SULFIDE; THIN-FILMS; ENHANCED ELECTROLUMINESCENCE; SOL-GEL; PHOTOLUMINESCENCE; CERAMICS; IONS;
D O I：
10.1016/j.mseb.2019.01.013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The phenomena involved in direct-current-driven electroluminescence (DC EL) was investigated, which occurred in the sintered pellets of ZnO doped with rare-earth (RE) and lithium. The microstructural observation revealed that the morphology of loosely-packed small-grains was advantageous for the DC EL, where the doped RE3+ was homogeneously dispersed over the ZnO matrix as small RE2O3 grains. The EL color was dependent on the type of the doped RE3+ and green, blue, or red EL was observed with Er3+, Tm3+, or Eu3+. The EL emission was recognized on the anode side. That brought a new multilayered structure concentrating RE3+ on the anode side to enhance the EL intensity. The occurrence of the EL on the anode side in the presence of an acceptor-type dopant lithium suggested the involvement of holes in the DC EL emission.
引用
收藏
页码：125 / 132
页数：8
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