Organic electroluminescence element and light-emitting apparatus having the same
An electroluminescence, organic technology, applied in the field of organic electroluminescence elements, can solve the problem of insufficient reduction of light absorption and the like
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no. 1 approach
[0016] Figure 1A It is a schematic cross-sectional view of an organic EL element according to the present invention. As can be seen from this figure, the organic EL element has a substrate 10, a first electrode 11, an organic compound layer 12, and a second electrode 15. The organic compound layer 12 is placed between the first electrode 11 and the second electrode 15 and contains a light-emitting layer. This organic EL element has a "top emission" structure in which light is transmitted through an electrode farther from the substrate 10 than the other electrode, that is, the second electrode 15. The second electrode 15 has a base layer 13 and a metal layer 14 formed on the base layer 13. The base layer 13 is closer to the substrate 10 than the metal layer 14 and is a mixed layer containing lithium (Li), oxygen (O), and magnesium (Mg), while the metal layer 14 contains silver (Ag) and has a thickness in the range of 5.0-20 nm . This configuration is advantageous in the follo...
no. 2 approach
[0034] Another embodiment of the present invention will be described in detail below. Such as Figure 1B As shown in, this embodiment is represented by a light emitting device. The light-emitting device has several pixels 1 and a mechanism for controlling the intensity of light emitted from the pixels 1, such as TFTs, and the pixels 1 are each provided with an organic EL element according to the present invention.
[0035] The light-emitting device can also be used as a display device. The display device has several pixel units arranged in a matrix, and each pixel unit can be composed of several pixels of different colors, such as red pixels, green pixels, and blue pixels. The red pixel has an organic EL element that emits red light. When the light-emitting device according to the present invention has red pixels, green pixels, and blue pixels, some or all of the pixels 1 included in the light-emitting device may be provided with the organic EL element according to the present...
reference example 1
[0043] First, measure the transmittance in some samples. Each sample was prepared as the second electrode of the organic EL element according to the present invention placed on a substrate, that is, a laminate of a base layer and a metal layer.
[0044] Reference example 1 includes two samples. Both samples are composed of Li stacked on a glass substrate 2 The O-Mg mixed film (base layer) and the silver thin film (metal layer) are composed, but are different from each other in the magnesium content (volume percentage) in the base layer.
[0045] The procedures used to prepare these samples are as follows. First, co-deposit Li on two glass substrates by vapor deposition under the following two sets of conditions for two mixed films of different compositions 2 O and Magnesium: For two mixed membranes, Li 2 Total deposition rate of O and magnesium: For one type, the content of magnesium in the base layer: 10% by volume; for the other type, the content of magnesium in the base layer:...
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