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Compound for an organic photoelectric element, OLED, and display incorporating OLED

A technology for optoelectronic devices and compounds, applied in organic chemistry, organic dyes, lighting devices, etc., can solve the problems of high cost, low solubility, and reduced luminous efficiency of devices, and achieve improved life, high luminous efficiency, and excellent thermal stability. Effect

Active Publication Date: 2015-07-22
CHEIL IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to lower thermal stability, short circuits or pixel defects can occur during the thermal resistance test of the device
Moreover, the host material, such as CBP, transports holes faster than electrons, so excitons will not be efficiently formed in the light-emitting layer, thereby reducing the luminous efficiency of the device.
[0008] In addition, low-molecular-weight host materials are usually deposited using vacuum, and the cost of vacuum deposition is higher than that of wet methods.
In addition, most low-molecular host materials have low solubility in organic solvents, so they cannot be coated in a wet process to form organic thin layers with excellent film properties

Method used

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  • Compound for an organic photoelectric element, OLED, and display incorporating OLED
  • Compound for an organic photoelectric element, OLED, and display incorporating OLED
  • Compound for an organic photoelectric element, OLED, and display incorporating OLED

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0133] Compounds for organic optoelectronic devices were synthesized according to Reaction Scheme 1 below.

[0134] [Reaction Scheme 1]

[0135]

[0136] The first step: the synthesis of intermediate product (B)

[0137] In a 500ml round bottom flask with thermometer, reflux condenser and stirrer, 11.0g (24.7mmol) of compound A, 6.0g (29.7mmol) of 1-bromo-2-nitrobenzene, 1g (0.86 mmol) of tetrakistriphenylphosphine palladium was dissolved in 200 ml of tetrahydrofuran (THF), and 50 ml of 2M potassium carbonate was added thereto. The mixture was stirred at 75°C for 24 hours.

[0138] The stirred reaction was cooled to room temperature to complete the reaction, then extracted with dichloromethane and washed with water. Next, the reactant was treated with anhydrous magnesium sulfate to remove moisture, and filtered to remove the organic solvent therein. The final residue was purified by silica gel chromatography using a mixed solvent prepared by mixing dichloromethane and...

Embodiment 2

[0149] Compounds for organic optoelectronic devices were synthesized according to Reaction Scheme 2 below.

[0150] [Reaction Scheme 2]

[0151]

[0152] The first step: the synthesis of intermediate product (E)

[0153] In a 500ml round bottom flask with thermometer, reflux condenser and stirrer, 10.0g (19.2mmol) of compound B, 4.7g (23.2mmol) of 1-bromo-2-nitrobenzene and 0.8 g (0.69 mmol) of tetrakistriphenylphosphinepalladium was dissolved in 200ml of tetrahydrofuran, and 50ml of 20% tetrakistriethylammonium hydroxide was added thereto. The mixture was stirred at 75°C for 24 hours.

[0154] The resulting reactant was cooled to room temperature to complete the reaction, then extracted with dichloromethane and washed with water. Then, the reactant was treated with anhydrous magnesium sulfate, and filtered to remove the organic solvent therein. The final residue was purified by silica gel chromatography using a mixed solvent prepared by mixing dichloromethane and hex...

Embodiment 3

[0166] Using the compound synthesized according to Example 1 as host and Ir(PPy) as dopant 3 Make organic light-emitting diodes. Here, ITO is formed as thickness is used as the anode, while aluminum (Al) is formed as thickness is used as the cathode.

[0167] Specifically, an anode for an OLED is fabricated as follows: set the sheet resistance to 15Ω / cm 2 The ITO glass substrate was cut into a size of 50 mm × 50 mm × 0.7 mm, and then ultrasonically cleaned in acetone, isopropanol and pure water for 15 minutes, and then cleaned with UV ozone for 30 minutes.

[0168] on the substrate, at 650 x 10 -7 Deposition of N,N'-bis(1-naphthyl)-N,N'-diphenylbenzidine (NPB) (70nm) and 4,4' ,4"-tris(N-carbazolyl)triphenylamine (TCTA) (10nm) formed Thick hole transport layer (HTL).

[0169] Then, using the compound synthesized according to Example 1 under the same vacuum deposition conditions to form Thick light-emitting layer with simultaneous deposition of phosphorescent dopant ...

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Abstract

Provided are a compound for an organic photoelectric device in which substituents represented by the following Chemical Formulas 1 to 3 are sequentially combined and an organic photoelectric device including the same. The definition of the above Chemical Formulas Formula 1 to 3 is described in the specification. The compound for an organic photoelectric device has excellent thermal stability and particularly, may be applied to an organic thin layer of an organic photoelectric device and thus can provide an organic photoelectric device and display device having high luminous efficiency at a low voltage and improved life-span.

Description

technical field [0001] The present disclosure relates to a compound for an organic optoelectronic device, an organic light emitting diode including the compound, and a display including the organic light emitting diode. Background technique [0002] Broadly speaking, organic optoelectronic devices are devices that convert light energy into electrical energy, or vice versa. As examples, organic optoelectronic devices include organic light emitting diodes (OLEDs), solar cells, transistors, and the like. In particular, organic light emitting diodes have recently drawn attention due to increased demand for flat panel displays. [0003] When a current is applied to an organic light-emitting diode, holes are injected from the anode, and electrons are injected from the cathode, and then the injected holes and electrons move to the hole transport layer (HTL) and the electron transport layer (ETL) respectively, and are regenerated in the light-emitting layer. combined into luminesc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06H05B33/10H10K99/00
CPCC09K11/06H01L51/50C09K2211/1029Y10S428/917H01L51/42C09B57/00C09K2211/1011C09K2211/1074C07D403/04C09B57/008C07D401/14H05B33/14C07D403/14H01L51/0067C07D401/04C09K2211/1018H01L51/0072H10K85/654H10K85/6572H10K30/50H10K50/14H05B33/10H10K30/00H10K50/00
Inventor 郑成显金永勋金亨宣李镐在柳银善蔡美荣
Owner CHEIL IND INC
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