Polycyclic compound and organic electroluminescent device using the same

A polycyclic compound and organic technology, applied in the field of organic electroluminescent components and polycyclic compounds, can solve the problems of poor efficiency and insufficient practical use, etc., and achieve the effect of long life and high luminous efficiency

Active Publication Date: 2011-05-11
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The efficiency of vacuum evaporation of materials with large molecular weight is poor, and i

Method used

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  • Polycyclic compound and organic electroluminescent device using the same
  • Polycyclic compound and organic electroluminescent device using the same
  • Polycyclic compound and organic electroluminescent device using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0657] (Manufacturing of organic EL elements)

[0658] A 25 mm x 75 mm x 1.1 mm glass substrate with an ITO transparent electrode (manufactured by Geomatec) was subjected to ultrasonic cleaning in isopropanol for 5 minutes, followed by UV (Ultraviolet) ozone cleaning for 30 minutes.

[0659] The glass substrate with the transparent electrode after cleaning in this way is mounted on the substrate holder of the vacuum evaporation device, first on the surface of the side of the glass substrate where the transparent electrode line is formed, the compound 1-A is evaporated with a thickness of 30nm, This was made to cover the transparent electrode to obtain a hole transport layer.

[0660] On this hole transport layer, compound 1-1 as a host for phosphorescence and Ir(Ph-ppy)3 as a dopant for phosphorescence were co-deposited to a thickness of 30 nm to obtain a phosphorescence emitting layer. The concentration of Ir(Ph-ppy)3 was 5% by mass.

[0661] Next, compound 1-B with a thick...

Embodiment 1-2～1-19

[0667] An organic EL device was fabricated and evaluated in the same manner as in Example 1-1, except that the host material described in Table 1 was used instead of the host compound 1-1 in Example 1-1. Table 1 shows the evaluation results of luminous performance.

Embodiment 2-1

[0885] (Manufacturing of organic EL elements)

[0886] A 25 mm x 75 mm x 1.1 mm ITO transparent electrode-attached glass substrate (manufactured by Geomatec) was subjected to ultrasonic cleaning in isopropanol for 5 minutes, followed by UV (Ultraviolet) ozone cleaning for 30 minutes.

[0887] The glass substrate with the transparent electrode after cleaning in this way was installed on the substrate holder of the vacuum evaporation device, first on the surface of the side of the glass substrate where the transparent electrode line was formed, the following compound 2- A, making it cover the transparent electrode to obtain a hole transport layer.

[0888] Compound 2-1 as a host material for phosphorescence and Ir(Ph-ppy)3 as a dopant for phosphorescence were co-deposited to a thickness of 30 nm on the hole transport layer to obtain a phosphorescent emitting layer. The concentration of Ir(Ph-ppy)3 was 5% by mass.

[0889] Next, compound 2-B with a thickness of 10 nm, compound ...

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Abstract

Disclosed is a polycyclic compound having a structure wherein two benzene rings are so bonded to a central benzene ring as to form a condensed ring to an end of which another condensed ring is bonded. Also disclosed is an organic electroluminescent device having one or more organic thin film layers including a light-emitting layer between a cathode and an anode, wherein at least one of the organic thin film layers contains the polycyclic compound. The organic electroluminescent device has high luminous efficiency, no pixel defects, and long life. The polycyclic compound enables realization of such an organic electroluminescent device.

Description

technical field [0001] The present invention relates to a polycyclic compound and an organic electroluminescent element using the same, in particular to an organic electroluminescent element with high luminous efficiency and long life and the polycyclic compound for realizing it. Background technique [0002] Organic electroluminescent elements (hereinafter, organic electroluminescence is sometimes abbreviated as EL) are self-luminescence using the principle that fluorescent substances emit light by virtue of the recombination energy of holes injected from the anode and electrons injected from the cathode by applying an electric field. element. Since a low-voltage-driven laminated organic EL element was reported, researches involving organic EL elements using organic materials as constituent materials have been widely conducted. In this laminated device, tris(8-quinolinolato)aluminum is used for the light emitting layer, and a triphenyldiamine derivative is used for the hol...

Claims

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Application Information

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IPC IPC(8): C07D209/86C07D487/04C07D491/048C07D493/04C07D495/04C07D519/00C09K11/06H01L51/50
CPCC07D209/86C07D403/10C07D487/04C07D491/04C07D491/048C07D493/04C07D495/04C07D497/04C07D519/00C09K11/06C09K2211/1007C09K2211/1011C09K2211/1029C09K2211/1044C09K2211/1088C09K2211/1092H05B33/14C09K2211/1014H10K85/6576H10K85/6574H10K85/6572Y10S428/917
Inventor 加藤朋希沼田真树西村和树岩隈俊裕细川地潮吉田圭
Owner IDEMITSU KOSAN CO LTD
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