Highly uniform supramolecular nano-films derived from carbazole-containing perylene diimide <i>via</i> surface-supported self-assembly and their electrically bistable memory behavior
作者:Qudrat Ullah Khan、Guofeng Tian、Lin Bao、Shengli Qi、Dezhen Wu
DOI:10.1039/c8nj01380b
日期:——
based on which memory device fabrication and electrically bistable behavior evaluation are technically infeasible. Whereas PDI-6Cz readily self-assembles into highly uniform nano-films with a considerably smooth surface, in which the X-ray diffraction study indicates strong π–π stacking between the aromatic skeletons. Further characterization indicates that sandwich memory devices using a PDI-6Cz nano-film
对于电存储应用,两种per四羧酸二酰亚胺(PDI)衍生物N,N '-(6-咔唑己基)-1,7-二(4-叔丁基苯氧基)per -3,4,9,10-四羧酸二酰亚胺(合成PDI-6Cz)和N,N '-(2-咔唑乙基)-1,7-二(4-叔丁基苯氧基)per -3,4,9,10-四羧酸二酰亚胺(PDI-2Cz)研究了它们的表面支撑自组装行为。PDI-2Cz倾向于自组织成规则的棒,规则的棒被证明是具有单晶性质的六边形晶格,基于该棒,存储器件的制造和电双稳态行为评估在技术上是不可行的。而PDI-6Cz易于自组装成具有相当光滑表面的高度均匀的纳米膜,其中X射线衍射研究表明芳族骨架之间有很强的π-π堆积。进一步的特征表明,使用PDI-6Cz纳米膜作为有源层的三明治式存储器件在接通电压约为1200V的情况下表现出可重新编程的闪存型存储性能。0.8 V,开/关电流比为10 4。此外,这些器件还具有出色的长期运行稳定性,可承受10