Organic electroluminescence component and manufacturing method thereof

An electroluminescent element, organic technology, applied in the direction of electrical components, semiconductor/solid-state device manufacturing, electric-solid-state devices, etc., can solve the problem of decreased dispersion stability of metal nanoparticles, poor film reflection characteristics or conductivity, metal reflective film Adhesion decline and other problems, to achieve the effect of suppressing the decline in luminous intensity, improving reflection characteristics, and improving reflection characteristics

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

AI Technical Summary

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 that the adhesion of the metal reflective film decreases, the metal reflective film peels off from the base material or the light emitting layer, or the reflection characteristics decrease. questions like
In addition, if primary amine or the like is excessively added in order to suppress the particle growth of the metal nanoparticles, the dispersion stability of the metal nanoparticles decreases or the reflective properties or conductivity of the obtained film deteriorate.

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0123] produced with figure 2 structure of organic EL elements. A metal reflective film with a film thickness of about 100 nm was formed by spin coating on a glass substrate at 1000 rpm for 60 seconds and firing at 200° C. for 30 minutes using the composition for a metal reflective film. The composition for a high-refractive-index enhanced-reflection transparent film was coated thereon by a spin coating method, and fired at 170° C. for 30 minutes to obtain an enhanced-reflection transparent film with a thickness of 25 nm. Then, an ITO transparent conductive layer (anode, thickness: 150 nm) was formed thereon by sputtering, followed by a hole transport layer (N,N'-diphenyl-N,N'-bis(m-tolyl)bi Aniline, thickness: 30nm), light-emitting layer (tris(8-quinolinolato)aluminum doped with 5% by weight of rubrene, thickness: 30nm) and electron transport layer (tris(8-quinolinolato)aluminum, thickness: 30nm). AlLi was further formed into a 5 nm film as a transparent electrode layer (...

Embodiment 2

[0126] produced with image 3structure of organic EL elements. A metal reflective film with a film thickness of approximately 100 nm was formed by forming a film on a glass substrate at 1000 rpm x 60 seconds by spin coating and firing at 200°C for 30 minutes. . The composition for a low-refractive-index enhanced-reflection transparent film was coated thereon by a spin coating method, and fired at 170° C. for 30 minutes to obtain a low-refractive-index enhanced-reflection transparent film with a thickness of 25 nm. Except using the composition for a high-refractive-index enhanced-reflection transparent film, a 25-nm high-refractive-index enhanced-reflection transparent film was formed thereon in the same manner as the low-refractive-index enhanced-reflection transparent film. A transparent conductive layer of ITO (anode, thickness: 150 nm) was formed on it by sputtering, followed by a hole transport layer (N,N'-diphenyl-N,N'-bis(m-tolyl)benzidine, Thickness: 30nm), light-emi...

Embodiment 3～8

[0128] Except having formed the metal reflective film and the reflection-increased transparent film in the composition described in Table 1, it produced and evaluated similarly to Example 2. Here, ZrO 2 The average particle diameter of the particles is 30 nm, the average particle diameter of the ZnO particles is 20 nm, and the average particle diameter of the ITO particles is 25 nm. Table 1 shows the results.

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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 (100) is successively provided with a substrate (101), a metal reflection film (102), an enhanced reflection transparent film (103), a transparent conductive layer (104), a luminous layer (105) and a transparent electrode layer (106), and the component is characterized in that the metal reflection film (102) comprises a metal nanoparticle sintering body and additives, and the enhanced reflection transparent film (103) comprises light-admitting bonder.

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 provided with a metal 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 a cross-sectional structure of a conventional top emission type organic EL element is shown. Such as figure 1 , the organic EL element 1 is composed of the following multilayer structure, that is, on the substrate 20, the light emitting layer 30 composed of organic matter is sandwiched bet...

Claims

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Application Information

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