【摘要】 采用结构Glass/DBR/ITO/NPB/NPB∶Alq/Alq/Al制作了有机微腔电致发光器件。将空穴传输材料与发光材料以一定比例混合作为发光层 ,为了便于对比 ,在不改变有机层的膜厚的情况下同时制作了传统的异质结微腔器件 ,发现两种器件的发光光谱有很大不同 ,器件的复合效率与传统的异质结器件相比也得到了很大提高 ,这是因为将两种有机材料混合能消除界面势垒 ,提高器件的复合效率 ,从而提高了器件的发光性能 ,实现了微腔双模发射 ,且两个模式的半峰全宽分别为 8nm和 12nm。通过进一步优化器件结构可以实现微腔白光发射。更多还原

【Abstract】 The organic microcavity light emitting diode was fabricated using structure Glass/DBR/ITO/NPB/NPB:Alq/Al. Here NPB and Alq were mixed as the emitting material. In order to compare its performances with those of conventional MOLEDs,a heterostructure MOLED was also fabricated. There are many differences between the spectrum of the original microcavity light emitting diode and the conventional one. The voltage barrier was eliminated by mixing hole transport material and emitting material,thus recombination efficiency was enhanced and double modes emitting were realized and their FWHM (full width half maximum) were 8 nm and 12 nm respectively. White light emission from organic microcavity can be realized by optimizing the device structure and adopting new materials.更多还原