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纳米半导体与聚合物复合形成的新型电致发光材料,在大规模平面显示和移动通信等现代信息显示方面具有广阔的应用前景。在这种复合型电致发光材料体系中,聚合物不仅可用作LED器件的粘接剂,而且在用作无机发光层的分散介质时,对纳米晶粒的表面可以起钝化作用,防止发光猝灭,从而通过控制和调节纳米晶粒的含量和尺寸来调节发光强度和波长。当采用共轭聚合物与纳米半导体形成复合体系时.还可以通过共轭聚合物与纳米半导体间的电子转移来调节发光层的电子结构及其发光性能。利用纳米半导体的高电荷输运性,也可以增强电致发光聚合物发光层的效率。
The new electroluminescent material formed by nano-semiconductor and polymer compound has broad application prospect in modern information display such as large-scale plane display and mobile communication. In such a composite electroluminescent material system, the polymer can be used not only as an adhesive for LED devices but also as a dispersion medium for an inorganic light-emitting layer to passivate the surface of the nanocrystalline grains and prevent The luminescence quenches, thereby adjusting the luminescence intensity and wavelength by controlling and adjusting the content and size of the nanocrystalline grains. When the conjugated polymer is formed into a composite system with a nano-semiconductor, the electronic structure of the light-emitting layer and its luminescent properties can also be adjusted by the electron transfer between the conjugated polymer and the nano-semiconductor. Utilizing the high charge transportability of the nano-semiconductor can also enhance the efficiency of the light-emitting layer of the electroluminescent polymer.