摘要
不久前,我们报导了以TPD为空穴传输层,Alq为电子传输兼发光层的双层薄膜电致发光器件,在定电流密度6mA/cm^2连续驱动下,初始亮度106cd/m^2下降至一半亮度的时间为120小时,而继续操作500小时,亮度仍有38cd/m^2。在这篇文章中,我们将报道一个在上述器件的空穴传输层TPD中掺杂而构成的新器件。这个新器件发光亮度和效率比原器件增加了50％,而稳定性增加了近10倍,初始亮度165cd/m^2的半亮度寿命达1200小时。
Rubrene is doped into the hole transport layer of an organic thin film electroluminescent (OTFEL) device with a double-layered structure. It is found that the dopant has profound influences on the EL characteristics. It changes the region of light emission and thus the EL spectrum, increases the luminescence efficiency by more than 50% and improves the device stability by 10 times. The effect of the dopant on the energy relation of the materials discussed.
出处
《发光学报》
EI
CAS
CSCD
北大核心
1996年第4期372-375,共4页
Chinese Journal of Luminescence
基金
国家自然科学基金资助项目
