摘要
报道了有机无机异质节中稀土配合物的电致发光,器件结构为:ITO/PVK:Rare Earth Complex/无机材料/Al,其中无机材料可以选用ZnS,ZnSe,ZnO等。在这种结构的器件中,均获得了比较好的稀土离子的特征发射。以无机材料ZnS为例,讨论了异质节中稀土配合物的电致发光及优势。ZnS的电介质系数比PVK的电介质系数大3倍多,将有更大部分的电压降落在PVK层上,使PVK层内的电场强度增大,从而可以提高空穴在PVK层内的迁移速度,提高了空穴注入数目,有利于载流子的平衡。
Luminescence of rare earth complex based on organic-inorganic heterostructure is reported. The structure of the device is ITO/PVK：Tb/inorganic material/Al, where inorganic material includes ZnS, ZnO or ZnSe. For this structure, the authors obtained the characteristic emission of Tb ion. A large part of driving voltage was dropped on the PVK layer because the dielectric constant of ZnS is 3 times bigger than that of PVK. The electric field strength in PVK layer was improved, so the velocity of hole in PVK was increased. The balance of injected charge was enhanced.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2006年第8期1403-1405,共3页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金(10374001
10434030
60576016)
北京交通大学博士生创新基金(48011)资助
关键词
有机无机异质节
电致发光
Organic-inorganic heterostructure
Electroluminescence
