Thermally Stable Carbazole-Diimides as Hole Transport Materials for Organic Light-Emitting Devices
作者:Chi-Wan Kim、Myeon-Chen Choi、Jae-Chul Hwang、Chang-Sik Ha
DOI:10.1166/jnn.2012.5891
日期:2012.5.1
We synthesized new carbazole-diimide hole-transporting materials with different dianhydride groups by thermal imidization. The imide moieties were introduced to improve thermal stability of a carbazole hole transport molecule. Result showed that the carbazole-diimdes exhibit good thermal stability with glass transition temperature of 142-182 degrees C and degradation temperature of approximately 450
我们通过热酰亚胺化合成了具有不同二酐基的咔唑-二酰亚胺新的空穴传输材料。引入酰亚胺部分以改善咔唑空穴传输分子的热稳定性。结果表明,咔唑二酰亚胺显示出良好的热稳定性,玻璃化转变温度为142-182摄氏度,降解温度为约450摄氏度,并且在可见光区域具有良好的光学透明性。使用脂环族二酰亚胺(CBCZ)的有机发光器件(OLED)在12 V电压下的最大亮度约为8,600 cd / m2,电流效率为2.1 cd / A。通过优化制造条件,热稳定的CBCZ有望被用作具有较高效率和耐用性的有前景的空穴传输材料。