Composite material, light emitting element, light emitting device and electronic appliance using the composite material
申请人:Semiconductor Energy Laboratory Co, Ltd.
公开号:EP2423994A1
公开(公告)日:2012-02-29
A composite material includes an organic compound represented by the following general formula (2) and an inorganic compound, where, in the general formula (2), where in the general formula (2) X is selected from aromatic hydrocarbons represented by formulae (2-1) to (2-6) and R1 to R20 are identical or different from one another, and represent any of hydrogen, an alkyl group, an alkoxy group, an aryl group, and an arylalkyl group. A light emitting element includes the composite material and a light emitting device and an electronic appliance includes the light emitting element. The composite material has an excellent carrier transporting property and an excellent carrier injecting property with respect to the organic compound along with high visible light transmittance. By utilizing the composite material, a current excitation type light emitting element requiring low driving voltage and having excellent light emitting efficiency is obtained. By using the light emitting element, a light emitting device consuming low power and an electronic appliance including the light emitting device is provided.
一种复合材料包括由以下通式(2)表示的有机化合物和无机化合物,其中,在通式(2)中,通式(2)中的X选自由式(2-1)至(2-6)表示的芳香烃,R1至R20彼此相同或不同,并代表氢、烷基、烷氧基、芳基和芳烷基中的任何一种。发光元件包括该复合材料,发光器件和电子设备包括该发光元件。相对于有机化合物而言,复合材料具有优异的载流子传输性能和优异的载流子注入性能,同时还具有较高的可见光透射率。利用这种复合材料,可以获得一种需要低驱动电压且发光效率极高的电流激发型发光元件。通过使用该发光元件,还可提供低功耗的发光器件和包括该发光器件的电子设备。