| dc.description.abstract | The organic light-emitting diodes (OLEDs) based on organic materials are fascinating due to their attractive characteristics and potential applications to flat panel displays and illumination devices over inorganic materials. The OLEDs have unique advantages including flexibility, light weight, colorful gamut, high fluorescence efficiency, device reliability, wide view angle, low economical- and energetic-consuming. In summary, there are two main bottlenecks on the mass production of OLEDs: (1) The high temperature brought about by the deposition method (Organic Vapor Phase Decomposition, OVPD) and the operation (applied driving voltage). (2) An effective control in the stability and lifetime by interfacial engineering. Firstly, via initial solvent screening, not only separation and purification, but also solubility, polymorphism, crystal habit, and crystallinity were available in one-step unit operation. In addition, the form space of Alq3 was established as an useful engineering mass-productive data bank. The depression of sublimation point for Alq3 re-crystallized from DMF offered a lower evaporation temperature of OLED fabrications. Secondly, the interfacial study and screening of Alq3 nanowires grown on 2-dimensional templates including biological membranes (such as eggshell membranes ) and bio-inspired interfaces with mixed SAMs (1-Undecanethiol (UDT) and 11-Mercaptoundecanoic acid( MUA ) having methyl (CH3) and carboxyl (COOH) functional group were developed. The one-step unit operation of nanowires fabrication was efficient and economical. Besides, the organic biological and biometric membranes served as templates to induce organic nanowires were novel and unique. The interfacial study realized the nucleation and growth of materials on templates and avoided the degradation mechanism of devices. On the other hand, it also provided a strong improvement and enhancement of devices and potential applications on various fields in the future. Tris(8-hydroxyquinolinato)aluminum(Alq3) was an extensive organic emitting materials for OLEDs manufacturing and was selected for our investigation because of the rich literatures. | en_US |