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Light-emitting material, organic electroluminescent apparatus, and method of manufacturing the same

A luminescent material, an organic technology, applied in the field of luminescent materials, can solve problems such as inability to obtain luminescence, and achieve the effect of good luminescence characteristics

Active Publication Date: 2006-06-07
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, good luminescence cannot be obtained

Method used

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  • Light-emitting material, organic electroluminescent apparatus, and method of manufacturing the same
  • Light-emitting material, organic electroluminescent apparatus, and method of manufacturing the same
  • Light-emitting material, organic electroluminescent apparatus, and method of manufacturing the same

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experiment example

[0049] As the material of the two-component system, [Tris(4-phenylpiridinolato)Ir(III)] (hereinafter referred to as "Ir(ppy) 3 ") and [4,4-dicarbazole-4,4-biphenyl] (hereinafter referred to as "CBP"). Among these compounds, due to "Ir(ppy) 3 ” will form a guest material, so has the following structure.

[0050] 【Chemical 1】

[0051]

[0052] And since CBP will be the host material, it has the following structure.

[0053] 【Chemical 2】

[0054]

[0055] First, in the case of using these two materials as the light-emitting layer of the organic EL element, the ratio (weight ratio) between the two materials, that is, the specific ratio at which the light-emitting characteristics become the best, that is, the "weight ratio" in the present invention is found. required ratio". That is, various solutions in which the ratio (weight ratio) between the two materials was changed stepwise were prepared, and each solution obtained was formed into a film by a spin coating method to...

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Abstract

A light-emitting material for a light-emitting layer in which a plurality of components can be uniformly mixed in a desired ratio without phase separation, a method for manufacturing an organic EL device using the material, and an organic EL device. Its solution: it is a film-forming material for liquid-phase film-forming, and it is a luminescent material for forming a luminescent layer. It is a solution composed of a plurality of film-forming components and a solvent in which these film-forming components are dissolved. The desired ratio of each film-forming component in the light-emitting layer has deviations, and each film-forming component is adjusted to be substantially the same as the desired ratio, and It was dissolved in the solvent. The saturation concentration of each film-forming component in the solution at a predetermined temperature has a variation corresponding to the variation.

Description

technical field [0001] The present invention relates to a luminescent material suitable for forming a luminescent layer in an organic EL device, a method for manufacturing an organic EL device using the luminescent material, and an organic EL device. Background technique [0002] In recent years, the development of an organic electroluminescence element (hereinafter referred to as an organic EL element) using an organic substance for a light-emitting layer has been promoted as a self-luminous display. An organic EL element has a structure in which a thin film made of an organic material is sandwiched between a first electrode and a second electrode, and emits light when carriers injected from both electrodes recombine in the organic thin film. [0003] An organic EL device including a plurality of such organic EL elements is thin and lightweight. Moreover, for example, if the liquid phase method represented by the inkjet method described in Patent Document 1 is used for coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/14H05B33/10
CPCH05B33/10H10K59/35H10K71/135H10K71/15H10K85/342H10K50/11H10K2101/10H10K71/40H10K71/00
Inventor 深濑章夫
Owner SEIKO EPSON CORP