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SiO2/C9-PPV异质结中类阴极射线发光及有机电致发光的交互增强
Mutual enhancement of cathodoluminescence and organic electroluminescence in SiO2/C9-PPV heterogeneous junction
【摘要】 用夹在两层SiO2 之间的发光聚合物C9 PPV作成器件 ,在交流电激发下得到了超出有机电致发光黄绿色发光的蓝色发光 .通过对器件光学特性的研究 ,发现这种发光源于SiO2 中加速电子直接碰撞激发有机发光层而引起的类阴极射线发光 .使用非对称结构 ,得到了类阴极射线发光与有机电致发光相互增强的混合发光
【Abstract】 We have prepared a device of C 9 PPV sandwiched between two SiO 2 layers and obtained the blue light in addition to the yellow green emission under ac electric field excitation. By studying the optical characteristics of the device, we found that the emission was induced by direct bombardment of the accelerated electrons from SiO 2. This emission is termed by us as cathodo luminescence like emission. By using unsymmetrical structure, we realized mutual enhancement of cathodo luminescence like and Organic electroluminescence.
【关键词】 混合发光；
类阴极射线发光；
有机电致发光；
【Key words】 mixed luminescence； cathodo luminescence like emission； organic electroluminescence；
【Key words】 mixed luminescence； cathodo luminescence like emission； organic electroluminescence；
【基金】 国家自然科学基金 (批准号 :2 9992 5 3 0和 199740 0 2 );北京市自然科学基金 (批准号 :2 0 3 2 0 15 )资助的课题~~
- 【文献出处】 物理学报 ,Acta Physica Sinica , 编辑部邮箱 ,2003年04期
- 【分类号】O482.31
- 【被引频次】5
- 【下载频次】63