Light-emitting element, light-emitting device, and electronic appliance

摘要

An object of the present invention is to provide a light-emitting element with high luminous efficiency, and a light-emitting element of low-voltage driving. Another object is to provide a light-emitting device with low power consumption by using the light-emitting element. Another object is to provide an electronic appliance with low power consumption by using the light-emitting device in a display portion. A light-emitting element includes, between a pair of electrodes, a layer containing a composite material of a first organic compound and an inorganic compound and a layer containing a second organic compound being in contact with the layer containing the composite material, wherein the second organic compound does not have a peak of an absorption spectrum in a wavelength region of 450 to 800 nm if the second organic compound is compounded with the inorganic compound.

主权项

1. A light-emitting device comprising a light-emitting element, the light-emitting element comprising:
a first electrode; a first layer comprising a first organic compound and an inorganic compound over the first electrode, wherein the first organic compound is aromatic hydrocarbon not containing nitrogen; a second layer comprising a second organic compound over the first layer; and a second electrode over the second layer, wherein the first layer has a transmittance of 80% or higher per 100 nm in thickness in a wavelength region of 450 to 800 nm.