离子型d8/d10金属簇合物发光材料及其有机发光二极管研究

Owing to their splendid application and industrialization prospect in solid-state lighting and full-color flat-panel display, organic light-emitting diodes (OLEDs) based on phosphorescent neutral metal complexes with iridium(III) and platinum(II) etc have been vigorously investigated. Nevertheless, the development of OLEDs based on phosphorescent cationic or anionic metal complexs is still in its infancy. Compared with neutral metal complexes, ionic metal coordination species take some advantages, including easy preparation, high photo- and thermal stability, etc. low cost and convenient solution-processed procedure is usually utilized to prepare OLEDs for ionic metal complexes. Solution process is one of the viable approaches to reduce the price and attain large area device in practical application. In this project, d8 and d10 transition metal complexes will be systematically prepared to achieve high emissive quantum yields, good stability and desired phosphorescent colors by organic ligand design, structural optimization. The fabrication and optimization of OLEDs based on phosphorescent ionic metal cluster complexes will be conducted to explore the application of highly efficient phosphorescent metal cluster ions in OLEDs. It is expected that the highest current efficiency and external quantum efficiency of the devices will exceed 80 cd/A and 22%, respectively.

鉴于有机发光二极管（OLED）在固态照明和全彩色平板显示领域具有非常广阔的应用，基于Ir(III)和Pt(II)等电中性配合物的电致发光已经得到深入研究，而阴阳离子型的簇合物作为电致发光材料的研究却鲜有报道。离子型簇合物相比于中性配合物具有一些优势，比如：材料易于制备，光热稳定性好，此外基于离子型簇合物的电致发光器件通常利用溶液法制备，此方法可以降低制备成本，易于组装大面积平板器件。本项目中通过有机配体的设计和结构优化制备量子效率高、稳定性好、具有所需磷光颜色的d8和d10过渡金属簇合物. 利用溶液旋涂技术，研发磷光离子型簇合物OLED 器件制备和结构优化技术，探索高效率磷光金属有机团簇离子在有机发光二极管中的应用，预期溶液加工的器件最高电流效率超过80 cd/A、外量子效率突破22%。

鉴于有机发光二极管（OLED）在固态照明和全彩色平板显示领域具有非常广阔的应用，基于Ir(III)和Pt(II)等电中性配合物的电致发光已经得到深入研究，而阴阳离子型的簇合物作为电致发光材料的研究却鲜有报道。离子型簇合物相比于中性配合物具有一些优势，比如：材料易于制备，光热稳定性好，此外基于离子型簇合物的电致发光器件通常利用溶液法制备，此方法可以降低制备成本，易于组装大面积平板器件。本项目中通过有机配体的设计和结构优化制备量子效率高、稳定性好、具有所需磷光颜色的d8和d10过渡金属簇合物. 利用溶液旋涂技术，研发磷光离子型簇合物OLED 器件制备和结构优化技术，探索高效率磷光金属有机团簇离子在有机发光二极管中的应用，预期溶液加工的器件最高电流效率超过80 cd/A、外量子效率突破22%.