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Organic electroluminescence component and manufacturing method thereof

An electroluminescent element and manufacturing method technology, applied in the direction of electrical components, semiconductor/solid-state device manufacturing, electric solid-state devices, etc., can solve the problems of decreased dispersion stability of metal nanoparticles, decreased adhesion of conductive reflective films, and film reflection. To avoid problems such as deterioration of characteristics or conductivity, and to achieve the effects of suppressing the decrease in luminous intensity, improving reflection characteristics, and improving adhesion

Inactive Publication Date: 2013-03-06
MITSUBISHI MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the primary amine or the like is added, the metal nanoparticles grow excessively and become porous during sintering, so the adhesion of the conductive reflective film decreases, and the conductive reflective film peels off from the substrate or the light-emitting layer or reflects. Problems such as degradation of characteristics and decrease in luminance of organic EL elements
In addition, if a primary amine or the like is excessively added in order to suppress the particle growth of the metal nanoparticles, there is a problem that the dispersion stability of the metal nanoparticles decreases or the reflective properties or conductivity of the resulting film deteriorate.

Method used

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  • Organic electroluminescence component and manufacturing method thereof
  • Organic electroluminescence component and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] "Production of a composition for a conductive reflective film"

[0054] First, a composition for a conductive reflective film is produced. The production procedure is shown below.

[0055] Dissolve silver nitrate in deionized water to prepare a metal salt solution. Then, sodium citrate was dissolved in deionized water to prepare a sodium citrate aqueous solution having a concentration of 26% by mass. In the nitrogen stream maintained at 35°C, granular ferrous sulfate was directly added to the sodium citrate aqueous solution for dissolution, thereby preparing a reducing agent aqueous solution containing citrate ions and ferrous ions at a molar ratio of 3:2.

[0056] Next, while maintaining the above-mentioned nitrogen flow at 35° C., a stirring bar of a magnetic stirrer was placed in the reducing agent aqueous solution, and while stirring at a stirring bar rotation speed of 100 rpm, the above-mentioned metal salt aqueous solution was dripped into the reducing agent aqu...

Embodiment 2～7

[0063] Except having set it as the composition described in Table 1, it carried out similarly to Example 1, and formed the electroconductive reflective film, and obtained the organic EL element.

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Abstract

The present invention provides an organic electroluminescence component and a manufacturing method thereof. The component and the method are provided to obtain an organic EL component, the reflection characteristic of a metal reflection film is enhanced to enhance luminance of the organic EL component, thus degradation of the metal reflection film caused heat and light generated during the lighting process of the organic EL component can be inhibited to prevent the metal reflection film from peeling off from a substrate and a luminous layer and avoid luminous intensity, and durability can be enhanced. The organic electroluminescence component is successively provided with a substrate, a conductive reflection film, a luminous layer and a transparent electrode layer, and the component is characterized in that the conductive reflection film comprises a metal nanoparticle sintering body and additives.

Description

technical field [0001] The present invention relates to an organic electroluminescence element (hereinafter referred to as an organic EL element) and a manufacturing method thereof. More specifically, it relates to an organic EL element formed on a substrate and having a conductive reflective film capable of efficiently outputting light from an organic EL light-emitting layer, and a method for manufacturing the same. Background technique [0002] In recent years, organic EL elements have begun to be used in various fields due to improvements in luminous efficiency and durability, and applications to lighting fixtures and displays are rapidly developing. [0003] figure 1 An example of the cross-sectional structure of an organic EL element is shown in . Such as figure 1 , the organic EL element 1 has a multilayer structure in which a light-emitting layer 30 composed of an organic substance is sandwiched between a pair of conductive reflective films 10 (cathode) and a trans...

Claims

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Application Information

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IPC IPC(8): H01L51/52H01L51/50H01L51/56
Inventor 泉礼子日向野怜子山崎和彦
Owner MITSUBISHI MATERIALS CORP