电致发光聚合物/纳米半导体材料及其双功能器件

Electroluminescent Polymer/Nanocrystal and Dual Functional Devices

电致发光材料在大屏幕平板显示和移动通讯器件方面有着极大的优越性。Ⅱ-Ⅵ族无机半导体、金属有机化合物及共轭聚合物等都是电致发光材料。由半导体纳米晶体和电致发光聚合物组成的双发光器件中,纳米半导体的发光不仅可以通过掺杂及形成核壳结构来加以调节,而且受到其复合体系类型、纳晶含量、外加电压等因素制约;而无机半导体的高电荷输运特性也将影响聚合物发光层的效率。同时,利用无机纳米半导体的光导特性,这种复合体系也可以制成光导与电致发光双功能器件,且其发光效率可有较大幅度提高。

Electroluminescent materials, involving inorganic semiconductors like Ⅱ-Ⅵcompounds, metallorganic compounds and conjugated polymers, have many advantages in mobile communication and large plane display devices. In the dual emitting devices containing semiconductor nanocrystals and electroluminescent polymers, the emitting wavelength could not only be adjusted the content in the system and the applied voltage. by doping or by forming core-shell structure, but also depend upon The inorganic semiconductors with high-charge transporting abilities could affect the emission efficiency of the polymer emitter. Dual functions can also be achieved with high emission efficiency by benefiting from the photoconduction of the semiconductor nanocrystal and the electroluminescence of the polymer.