摘要
制备了以８－羟基喹啉锌Ｚｎｑ２为发光层、苯乙烯胺衍生物ＳＡ为空穴传导层、口恶二唑衍生物ＰＢＤ为载流子局限层的单层、双层和三层结构的有机发光二极管。研究了它们的电致发光性能如电致发光光谱、电流密度电压特性和电致发光亮度电压特性等。发现三层器件ＩＴＯ／ＳＡ／ＰＢＤ／Ｚｎｑ２／Ａｌ产生宽带的近白色的发射。研究了近白色发光器件的发光峰随驱动电压的变化规律，得出了宽带发射是载流子同时在ＳＡ层和Ｚｎｑ２层复合发光产生的结论。
A kind of near white emitted organic LED with structure of ITO/SA/PBD/Znq2/Al has been made. Here SA, a styryltriphenylamine derivative, is N (2 p methelphenyl) styryl N p methoxylphenyl beneneamine, PBD, a oxadizole derivative, is 2 (4 t butylphenyl) 5 (4 biphenylyl) 1, 3, 4 oxadizole, and Znq2 is 8 hydroxylquinoline Zinc chelate. The EL performance of single layer diode (SLD), double layer diode (DLD) and triple layer diode (TLD) have been investigated. The variation of EL spectra of two kinds of TLD′s with different thickness of organic layers by change the driven voltage indicates that the near white emission come from the recombination of electron and hole in both SA layer and Znq2 layer. The current density voltage (I V) characteristics and the brightness voltage (B V) characteristics of the single, double and triple layer devices have also been investigated in deteil.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1997年第12期1742-1746,共5页
Acta Optica Sinica
基金
国家自然科学基金
