论文部分内容阅读
以Tb3+ :水杨酸 (Tb3+ :(SA) 3)为空穴传输层兼发光层、高荧光材料Alq3为电子传输层 ,得到了窄谱带的绿色有机薄膜电致发光双层结构器件 .实验证实 ,双层器件的电致发光是电荷载流子隧穿内界面 (Tb3+ :(SA) 3 Alq3)之后分别在两有机层内的复合发光 ,是两有机层本征发光的叠加 .其光谱随着电子传输层厚度而改变 ,因而减少电子传输层厚度能得到亮度高、稳定性好的窄谱带电致发光器件 ,为获得高色纯度和稳定的电致发光器件提供了思路和方法 .
A narrow-band green organic thin-film electroluminescent double-layer structure device was obtained by using Tb3 +: salicylic acid (Tb3 +: (SA) 3) as the hole transport layer and luminescent layer and Alq3 as the electron transport layer. It is confirmed that the electroluminescence of the bilayer device is a composite light emission in the two organic layers respectively after the charge carrier tunneling the interfacial interface (Tb3 +: (SA) 3 Alq3) and is the superposition of the intrinsic light emission of the two organic layers. As the thickness of the electron transport layer is changed, narrow electron transport layer thickness can be obtained with high brightness and good stability. The present invention provides ideas and methods for obtaining high color purity and stable electroluminescent devices.