Studies on AC Electroluminescence Device Made of BaTiO3–CaTiO3:Pr3+ Diphase Ceramics
Studies on AC Electroluminescence Device Made of BaTiO3–CaTiO3:Pr3+ Diphase Ceramics
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DOI：
10.1143/apex.3.022601
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发表时间：
2010-02
影响因子：
2.3
通讯作者：
Jun-Cheng Zhang;Xusheng Wang;X. Yao;Chao‐Nan Xu;H. Yamada
中科院分区：
文献类型：
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作者：
Jun-Cheng Zhang;Xusheng Wang;X. Yao;Chao‐Nan Xu;H. Yamada
研究了BaTiO_3-CaTiO_3：Pr ~（3+）复相陶瓷无硫化物电致发光器件的交流电致发光。在固态反应过程中自发形成了一系列电介质/荧光粉/电介质三明治结构。利用电流密度-电场（J-E）关系讨论了EL机理。在电场阈值以上，由Ba0.77Ca0.23TiO3：Pr电介质与Ba0.1Ca0.9TiO3：Pr荧光粉界面发射的初始电子通过肖特基发射进入荧光粉，被加速撞击并激发Pr 3+。然后，EL被制作出来。
Ac electroluminescence (EL) from non-sulfide EL device made of BaTiO3–CaTiO3:Pr3+ diphase ceramics is investigated. A series of dielectric/phosphor/dielectric sandwich structures are formed spontaneously in the solid-state reaction process. The EL mechanism is discussed using the electric current density–electric field (J–E) relation. Above the threshold of electric field, the initial electrons emitted from the interface of Ba0.77Ca0.23TiO3:Pr dielectric and Ba0.1Ca0.9TiO3:Pr phosphor into the phosphor by the Schottky emission, are accelerated to impact and excite Pr3+. Then the EL is produced.