【摘要】 通过将微腔引入有机掺杂红光OLED器件 ,获得了半宽 (FWHM)仅为 2 7nm的纯红光发射 ,器件色度为 (0 .6 497,0 .3488) 另外通过改变基质材料 ,制作了不同的掺杂器件 ,发现除了器件的发光颜色有了很大变化外 ,器件的性能也有很大不同 ,采用宽能隙材料作为基质的器件无论在J V特性还是在器件效率上均不如窄能隙材料器件 ,说明在选基质材料时 ,除了一些必须考虑的因素外 ,材料的能隙也是决定器件性能的一个重要指标更多还原

【Abstract】 By introducing microcavity to dye doped red emitting organic light-emitting diode, the pure red emission was obtained and the full width at half maximum of which was only 27 nm. The different dye doped OLEDs was fabricated by using the other host material and found that in addition to the color modulation the performance of the device was changed greatly. Using large band gap material as host material the device had poor performance both in J-V characteristics and in EL efficiency. It showed that when choosing the host materials the band gap is as important as the other factors such as the film formation and higher carrier mobility.更多还原