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Organic light-emitting element

A technology of organic light-emitting elements and light-emitting layers, which is applied in the fields of electrical components, organic chemistry, and electric solid-state devices. It can solve the problems of excellent color purity and inability to fully obtain it, and achieve the effect of high color rendering

Inactive Publication Date: 2009-08-26
YAMAGATA PROMOTIONAL ORG FOR INDAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, this method cannot sufficiently obtain blue emission with excellent color purity other than yellow and green.

Method used

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  • Organic light-emitting element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0182] (Synthesis of DTVPF)

[0183] The compound (DTVPF) represented by the following (chemical formula 32) was synthesized according to the synthesis scheme shown below.

[0184] [chemical formula 32]

[0185]

[0186] [chemical formula 33]

[0187]

[0188] Mg sheet 1.6g (65.64mmol), CPME are packed in the flask successively, after carrying out nitrogen replacement, the CPME solution that will dissolve 2-bromobiphenyl 15.0g (64.35mmol) is added in the Mg sheet dispersion solution, in The reaction was carried out at 65° C. for 2.5 hours to prepare a Grignard reagent.

[0189] The reaction solution was cooled, 13.8 g (65.64 mmol) of 4,4'-dimethylbenzophenone was added to the solution, and the reaction was carried out at 65°C for 4.0 hours, and then the reaction solution was treated with hydrochloric acid.

[0190] The ether layer was washed twice with water, and the ether-recovered residue was dissolved in acetic acid, and heated and stirred at 100°C for 3.5 hours. ...

Embodiment 2

[0228] Using TMN1357 (chemical formula 17) as a host material, an organic light-emitting element containing a layer structure was produced in the same manner as in Example 1. The layer structure is such as figure 1 Layer composition shown.

[0229] A brief description of the layer structure of this device is ITO (150nm) / DTVPF:MoO 3 (10nm, 67:33) / DTVPF (56nm) / TMN1357:TPA (20nm, 98:2) / DTVPF (15nm) / DTVPF:Liq (10nm, 50:50) / Al (100nm).

[0230] 1000A / m is applied to this organic EL element 2 The luminescence spectrum of the DC current is as Figure 4 shown.

[0231] Such as Figure 4 As shown, a pure blue luminescence originating from TPA was obtained.

[0232] In addition, the chromaticity of the luminous color is in the CIE coordinates (1000A / m 2 ), (x, y) = (0.165, 0.083), which is blue light with high color purity.

Embodiment 3

[0234] Using TMN 1357 (chemical formula 17) as a host material, an organic light-emitting element containing a layer structure was produced in the same manner as in Example 1. The layer structure is a light-emitting layer with N20 (chemical formula 12) as a light-emitting dopant figure 1 Layer composition shown.

[0235] A brief description of the layer structure of this device is ITO (150nm) / DTVPF:MoO 3 (10nm, 67:33) / DTVPF (56nm) / TMN1357:N20 (15nm, 94:6) / DTVPF (38nm) / DTVPF:Liq (10nm, 50:50) / Al (100nm).

[0236] 100A / m is applied to this organic EL element 2 The luminescence spectrum of the DC current is as Figure 5 shown.

[0237] Such as Figure 5 As shown, a pure blue luminescence originating from N20 was obtained.

[0238] In addition, the chromaticity of the luminous color is in the CIE coordinates (100A / m 2 ), (x, y) = (0.157, 0.043), which is blue light with high color purity.

[0239] From the above, according to the organic light-emitting device using the comp...

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Abstract

The invention relates to an organic light-emitting element, provides an organic light-emitting element using a fluorene derivative which allows a blue luminescent material excellent in color purity to emit light. The organic light-emitting element having one or a plurality of organic layers including a light emitting layer between a pair of electrodes is arranged such that at least one layer of the above-mentioned organic layers contains a compound as expressed by the following general formula (1) independently or as a mixture, (A, B, C: hydrogen, substituted or unsubstituted phenylene group, naphthalene group, biphenylene group, fluorene group, or carbazole group. A and B may form a saturated ring bond. R1-R5: hydrogen, alkyl group, cycloalkyl group, alkoxy group, cycloalkoxy group. R6-R13: hydrogen, halogen, cycloalkyl group, alkoxy group, cycloalkoxy group, aryloxy group, substituted or unsubstituted phenylene group or biphenylene group. n0, n1: 1 or 2. n2, n3: integer from 1 to 8. X: single bond which connects unit (a) and unit (b)).

Description

technical field [0001] The present invention relates to an organic light-emitting element containing a fluorene derivative capable of emitting light from a blue light-emitting material with high color purity. Background technique [0002] Organic light-emitting elements are self-illuminating elements that use organic compounds as light-emitting materials. Because they can emit light at a high speed, they are suitable for displaying moving images. In addition, the elements have a simple structure and have the characteristics of making the display panel thinner. Owing to having such excellent characteristics, organic light-emitting devices have been widely used in daily life as displays for mobile phones and vehicles. [0003] In addition, technology development as a light source for lighting panels has also progressed by taking advantage of the fact that it can emit light from a surface, which is different from LEDs, and is thin and lightweight. [0004] In order to achieve ...

Claims

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Application Information

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IPC IPC(8): H01L51/54C07C13/567C07C13/58C07D209/86
CPCY02B20/181
Inventor 小田敦木村昌人田中纯一
Owner YAMAGATA PROMOTIONAL ORG FOR INDAL TECH