Material for organic electroluminescent elements, organic electroluminescent element, display device and lighting device

An electroluminescent element and luminescent technology, which is applied in the direction of luminescent materials, lighting devices, electrical components, etc., can solve the problems of reduced mobility and weakened intermolecular π-π interaction

Active Publication Date: 2018-01-02
MERCK PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because the intermolecular π-π interaction needs to be relatively weakened for carrier hopping, and as a result, the mobility decreases

Method used

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  • Material for organic electroluminescent elements, organic electroluminescent element, display device and lighting device
  • Material for organic electroluminescent elements, organic electroluminescent element, display device and lighting device
  • Material for organic electroluminescent elements, organic electroluminescent element, display device and lighting device

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Experimental program
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Effect test

Embodiment 1

[0623] Hereinafter, although an Example is given and this invention is demonstrated concretely, this invention is not limited to these Examples. In addition, in an Example, although the expression of "part" or "%" is used, unless otherwise specified, it means "part by mass" or "% by mass".

[0624] [Production of organic EL elements]

[0625]

[0626] On a glass substrate of 100mm×100mm×1.1mm, ITO (Indium Tin Oxide) was deposited at a thickness of 100nm as an anode substrate (NA45 manufactured by NH Technology Glass Co., Ltd.) and patterned, and then the ITO transparent electrode was provided The transparent support substrate was ultrasonically cleaned with isopropanol, dried with dry nitrogen, and cleaned with UV ozone for 5 minutes.

[0627] On this transparent support substrate, poly(3,4-ethylenedioxythiophene)-polystyrenesulfonate (PEDOT / PSS, manufactured by Bayer Corporation, Baytron P Al 4083) diluted to 70% with pure water was used. The solution was formed into a th...

Embodiment 2

[0658] In the organic EL element 1-1, except that the dopant D-37 was replaced by D-36, and the host compound was replaced by the compound described in Table 2, the organic EL element 2-1 was produced in the same manner. ~2-15.

[0659] [Table 2]

[0660]

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Abstract

To provide a material for organic EL elements, which is capable of suppressing voltage increase during driving of an organic electroluminescent element as well as decrease of initial voltage caused byeasy level control and mobility improvement, and which is additionally capable of improving luminous efficiency. A material for organic EL elements according to the present invention is characterizedby containing a compound having a structure represented by general formula (1). AA General formula (1)

Description

technical field [0001] The present invention relates to a material for an organic electroluminescent element, an organic electroluminescent element, a display device, and a lighting device, and particularly relates to an organic electroluminescent element capable of improving luminous efficiency by reducing an initial voltage drop and suppressing a voltage rise during driving materials, organic electroluminescent elements, display devices and lighting devices. Background technique [0002] An organic electroluminescence element (hereinafter, also referred to as an organic EL element.) is a light-emitting element that has a structure in which a cathode and an anode sandwich light-emitting compounds containing a light-emitting compound, and holes injected from the anode are injected by applying an electric field. Excitons (excitons) are generated by recombining with electrons injected from the cathode in the light-emitting layer, and light (fluorescence, phosphorescence) relea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54C07D405/04C07D409/04C07D409/14C07D209/88C07D403/14C07D417/14C07D401/14C07D403/04C07D405/14C07D413/14
CPCC07D405/04C09K11/06H10K85/1135H10K85/346H10K85/654H10K85/6574H10K85/342H10K85/6572H10K50/11H10K2101/10F21K2/00C09K2211/1037H10K50/00H10K85/657C09K2211/1029H10K50/14H10K50/125H10K50/805H10K59/00
Inventor 大津信也山田哲也杉野元昭
Owner MERCK PATENT GMBH
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