Composition for charge transport membrane and ionic compound, charge transport membrane and organic electroluminescent device, and method for producing the device and membrane

A technology for charge transport membranes and ionic compounds, which is applied in the field of charge transport membrane compositions and ionic compounds, and can solve the serious problems of display performance stability of display devices, etc.

Active Publication Date: 2009-05-06
MITSUBISHI RAYON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When driven continuously, the gradual increase of the driving voltage also presents a serious problem in maintaining the stability of the display performance of the display device

Method used

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  • Composition for charge transport membrane and ionic compound, charge transport membrane and organic electroluminescent device, and method for producing the device and membrane
  • Composition for charge transport membrane and ionic compound, charge transport membrane and organic electroluminescent device, and method for producing the device and membrane
  • Composition for charge transport membrane and ionic compound, charge transport membrane and organic electroluminescent device, and method for producing the device and membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0404] An organic electroluminescent device having a layer constitution similar to that of the organic electroluminescent device 100b shown in FIG. 1(b) was produced by the following method.

[0405] A 120nm-thick indium tin oxide (ITO) transparent conductive film was deposited on a glass substrate (sputtered film product manufactured by Sanrong Vacuum Co., Ltd.) using conventional photolithography technology and hydrogen chloride etching, thereby forming a width of 2mm. strip pattern to prepare the anode. The patterned ITO substrate was sequentially subjected to ultrasonic cleaning in aqueous surfactant solution, ultrapure water washing, ultrasonic cleaning in ultrapure water, and ultrapure water washing, followed by drying with compressed air, and finally ultraviolet ray cleaning. -Ozone cleans.

[0406] The following composition was spin-coated on the above-mentioned glass substrate under the conditions shown in Table 12 below to form a uniform film with a thickness of 30 ...

Embodiment 2

[0420] Except adding 0.2% by weight of the compound (B-30) shown in the above table as the ionic compound instead of the ionic compound (A-1), the same procedure as in Example 1 was performed, thereby preparing an organic electroluminescent device . The light emitting characteristics of the obtained devices are shown in Table 15. A device capable of emitting light at low voltage even at a heat-drying temperature of 200°C was obtained.

Embodiment 3

[0436] Except for preparing a hole injection layer under the conditions shown below, the same procedure as in Example 1 was performed to obtain an organic electroluminescent device.

[0437] Table 16

[0438]

[0439] The light emitting characteristics of the obtained devices are shown in Table 20. As shown in Table 20, under the drying conditions of 230° C. and 15 minutes of heating, devices emitting light at low voltage were obtained.

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Abstract

An excellent composition for a charge-transport film, which can be used to produce an organic electroluminescence device having excellent heat-resistant property, high hole injection / transport capacity and capable of functioning at a low voltage, is proposed. It comprises at least an ionic compound expressed by the following general formula (1) or the like and a charge-transporting compound, wherein in general formula (1): R 11 represents an organic group bound to A 1 via a carbon atom; R 12 represents an arbitrary group; R 11 and R 12 may combine together to form a ring; A 1 represents an element belonging to the third and subsequent periods and group 17 of the long form periodic table; Z 1 n1- represents a counter anion; and n 1 represents an ionic valency of the counter anion.

Description

technical field [0001] The present invention relates to a composition and an ionic compound for a charge transport film, a charge transport film and an organic electroluminescent device using them, and a method for producing the organic electroluminescent device and the charge transport film. Specifically, the present invention relates to: an excellent composition for a charge transport film and an ionic compound that can be used to manufacture an organic electroluminescent device having excellent heat resistance and capable of operating at a low voltage; using the composition or the A charge transport film of the compound and a method for producing the same; and an organic electroluminescent device using the composition or the compound and a method for producing the same. Background technique [0002] Recently, electroluminescent (EL) devices (organic electroluminescent devices) in which organic materials are used instead of inorganic materials such as ZnS have been develop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/12H05B33/14C07F5/02C09K11/06
Inventor 饭田宏一朗绪方朋行田中麻人
Owner MITSUBISHI RAYON CO LTD
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