摘要
用原子力显微镜观察了沉积在不同温度基板上NPB表面形貌,发现NPB薄膜在室温下比较平坦的点状结构变为100℃时直径为0.2μm的岛状结构。为研究NPB表面形貌对OLED器件性能的影响,设计了结构为玻璃/ITO/NPB/Alq3/Al器件,比较了不同基板温度沉积的NPB薄膜对器件性能的影响。
NPB surface morphologies deposited on different temperature substrates were investigated using atomic force microscopy(AFM). That the NPB morphology turned from island morphology at high temperature(100℃) to grain morphology at room temperature was found. To characterize the effect of NPB surface morphology, the devices with the structure of Glass/ ITO/NPB/Alq3/A1 were fabricated using NPB films deposited at different substrate temperature and their performances were compared.
出处
《光学技术》
EI
CAS
CSCD
北大核心
2005年第5期766-768,共3页
Optical Technique
关键词
表面形貌
LEDS
电特性
morphologies
OLEDs
optoelectronic characteristics.