溶液法制备白光有机电致发光器件的研究进展

Progress of Solution Processable White Organic Light-emitting Diodes

白光有机电致发光器件(WOLEDs)在全彩显示和下一代固态照明领域应用前景广阔,溶液法(旋涂、喷墨印刷和刮涂等)制备的WOLEDs具有低成本、可大面积生产等优点,因而受到学术界和产业界的广泛关注。溶液法制备的白光器件发展日趋成熟,发光层、传输层和注入层等相继实现了溶液法加工,发光材料也从共混聚合物和单一聚合物发展到有机小分子。本文主要根据不同的发光层材料综述了近几年溶液法制备的WOLEDs研究进展并对其存在的问题和应用前景作了评述。

White organic light-emitting diodes （WOLEDs） exhibit wide and potential applications in full-color flat-panel display devices and the next generation solid-state lighting sources. Solution processable WOLEDs have many advantages, such as low cost and capable for large scale production by spin-coating, inkier printing and blade coating. The solution processing of emitting, transporting and injecting layers of WOLEDs have been realized successfully. The emitting materials include blending polymers, single polymers and organic small molecules. The progress of solution proccssable WOLEDs was reviewed in this paper with emphasis on emitting materials. The problems in this field were also presented.