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聚TPD电荷传输材料的制备与单层器件的电致发光 总被引:1,自引:0,他引:1
为了提高空穴传输材料TPD(三苯基二胺衍生物)的热稳定性和器件的寿命,用TPD通过Friedel-Crafts反应和二卤化合物进行缩聚,将TPD结构单元引入到聚合物的主链,得到了一系列具有电荷传输性能的新型电致发光聚合物.研究发现,所有聚合物的热稳定性均高于TPD,能带结构几乎没有发生改变,有的聚合物既能传输空穴,又能传输电子.考察了单层器件的发光性能.结果显示,器件最大亮度在17V时约为36 cd·m-2,最大发射为460nm. 相似文献
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高校网络道德教育是一项系统工程,它需要学校、家庭、社会等多方面的共同努力.学校是核心,应承担网络道德教育的主要责任;家庭是补充,应积极配合高校网络道德教育全面开展;社会是保障,应为高校网络道德教育营造良好环境. 相似文献
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采用新型的空穴传输材料三苯基二胺衍生物聚合物(PTPD)制成了ITO(氧化铟锡)/PTPD/Alq3(8-羟基喹啉铝)/Mg:Ag异质结电致发光器件,考察了其电致发光特性.结果表明,当Alq3厚度很薄(小于或等于10nm)时,器件仅为PTPD层特征发光;当Alq3厚度达到50nm时,器件仅为Alq3层特征发光.将所制得的器件与典型的ITO/TPD/Alq3/Mg:Ag器件进行了比较,发现稳定性明显提高,其原因是盯PD的热稳定性高、成膜质量好. 相似文献
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Significant improvement of OLED efficiency and stability by doping both HTL and ETL with different dopant in heterojunction of polymer/small-molecules
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This paper reports that the polymer/organic heterojunction doped
light-emitting diodes using a novel poly-TPD as hole transport
material and doping both hole transport layer and emitter layer with
the highly fluorescent rubrene and DCJTB has been successfully
fabricated. The basic structure of the heterostructure is
PTPD/Alq3. When hole transport layer and electron transport layer
are doped simultaneously with different dopant, the
electroluminescence quantum efficiencies are about 3 times greater
than that of the undoped device. Compared with undoped device and
conventional TPD/Alq3 diode, the stability of the doping device is
significantly improved. The process of emission for doped device may
include carrier trapping as well as F\"{o}rster energy transfer. 相似文献
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