Conducting formulation

A preparation and conductive additive technology, applied in the field of OLED devices, can solve the problems of OLED device performance deterioration, impossible conductivity, etc.

Inactive Publication Date: 2012-04-18
MERCK PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using fluids containing standard luminescent and / or charge-transporting materials, such as conjugated polymers in aromatic hydrocarbon solvents, it is not currently possible to do this without permanently doping the polymer (e.g. with iodine or other oxidant) to obtain the desired conductivity
However, for the application of the present invention, permanent doping is not ideal, because it will lead to deterioration of the performance of the OLED device

Method used

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Examples

Experimental program
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specific Embodiment approach

[0112] The present invention will be described in more detail below with reference to the following examples, which are only illustrative and do not limit the scope of the present invention.

Embodiment 1

[0125] Measure electrical resistance and calculate conductivity for: o-xylene, tetraoctylammonium bromide in o-xylene, tributylammonium trifluoroacetate in o-xylene, 3,4-dimethyl Anisole, tetraoctylammonium bromide in 3,4-dimethylanisole, and triethylammonium trifluoroacetate in 3,4-dimethylanisole. The results are shown in Table 1 and expressed as a function of concentration in figure 1 with 2 middle.

[0126] Table 1

[0127]

[0128]

[0129] Samples containing conductive additives had higher conductivity than corresponding control samples without conductive additives.

Embodiment 2

[0131]

[0132] Polymer 1

[0133] 0.6 part of Polymer 1 (see Example 6 in EP 1741148) was dissolved in 99.4 parts of 3,4-dimethylanisole (0.6% of Polymer 1 in 3,4-dimethylanisole) .

[0134] The electrical resistance was measured and the conductivity calculated as described in Example 1 for: Polymer 1 solution, Tetraoctylammonium bromide in Polymer 1 solution and Triethylammonium trifluoride in Polymer 1 solution Acetate. The results are shown in Table 2 and are shown as a function of concentration in figure 1 with 2 middle.

[0135] Table 2

[0136]

[0137] Samples containing conductive additives had higher conductivity than corresponding control samples without conductive additives.

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Abstract

The present invention relates to novel formulations comprising light emitting materials and / or charge transporting materials and a conductive additive, to their use as conducting inks for the preparation of organic light emitting diode (OLED) devices, to methods for preparing OLED devices using the novel formulations, and to OLED devices prepared from such methods and formulations.

Description

technical field [0001] The present invention relates to novel formulations comprising luminescent and / or charge-transporting materials and conductive additives, to the use of these formulations as conductive inks for the production of organic light-emitting diode (OLED) devices, to methods for producing OLED devices using said novel formulations , and to OLED devices prepared by these methods and formulations. Background technique [0002] When producing OLED devices, the active layer is usually applied using printing techniques such as inkjet printing, roll printing, slot dye coating, flexographic or gravure printing. Contact printing techniques, such as gravure printing, operate at high speeds. However, coating substrates at high speeds with inks or fluids containing luminescent and / or charge transport materials, where the fluids are non-conductive, can lead to a buildup of static charge. This can cause electrostatic discharge by arcing and, if the solvent is flammable, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/24H01L51/50H05B33/14H05B33/20
CPCH01L51/0085C09B57/008C09B57/00H01L51/5012C09K11/06C09D5/24H05B33/14H01L51/0087C09B57/10C09K2211/185C09D11/52H10K85/342H10K85/346H10K50/11
Inventor 马克·詹姆斯马格达·康凯文斯-麦斯凯万茨鲁斯·埃芬贝格尔克劳斯·邦纳德
Owner MERCK PATENT GMBH
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