【摘要】 利用八羟基喹啉铝(Alq3)作为发光层制备了双层有机发光二极管(OLEDs)。发现当Alq3的厚度到达与光波长相比拟时,电致发光(EL)光谱发生显著变化,并且出现了一个新的发光峰。利用广角度干涉模型模拟实验结果表明,理论模拟与实验结果相当吻合。并且研究了干涉效应在OLEDs中所起的重要作用。更多还原

【Abstract】 The organic light emitting diodes(OLEDs) were fabricated using tris (8hydroxyquinolino) aluminum (Alq3) as the emitting layer.When the thickness of the emitting layer increases to a wavelength order,electroluminescent(EL) spectra in the bilayer TPD/Alq3 OLEDs change markedly,i.e. emitting spectra are separated into two peaks when the thickness of the organic layer increases to 150 nm.The experimental results were simulated by wideangle interference of light emitting dipoles.The model is reasonable since the stimulation results coincide with the experiment data,which indicates that the interference effect plays an important role in OLEDs.更多还原