Imidazopyridine-based compound and organic light emitting diode including organic layer comprising the imidazopyridine-based compound

A technology of imidazopyridine and light-emitting diodes, applied in the field of organic light-emitting diodes, can solve the problems of not having driving voltage, brightness current density, power efficiency, lifespan, etc., and achieve the effect of high electron transmission capacity

Active Publication Date: 2008-05-28
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional organic light-emitting diodes do not have satisfactory driving voltage, brightness, current density, power efficiency, lifetime, etc.

Method used

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  • Imidazopyridine-based compound and organic light emitting diode including organic layer comprising the imidazopyridine-based compound
  • Imidazopyridine-based compound and organic light emitting diode including organic layer comprising the imidazopyridine-based compound
  • Imidazopyridine-based compound and organic light emitting diode including organic layer comprising the imidazopyridine-based compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0148] 15Ω / cm 2 (1200 Ȧ) ITO glass substrates were cut into a size of 50 mm×50 mm×0.7 mm, ultrasonically cleaned with isopropanol for 5 minutes and pure water for 5 minutes. The substrate was then rinsed with UV ozone for 30 minutes. m-MTDATA was vacuum deposited onto the substrate to form a hole injection layer with a thickness of 750 Ȧ. α-NPD was then vacuum-deposited on the hole injection layer to form a hole transport layer with a thickness of 150 Ȧ. A light emitting layer with a thickness of 300 Ȧ was formed on the hole transport layer using 97 wt % of DSA as a host and 3 wt % of TBPe as a dopant. Compound 1 prepared in Synthesis Example 1 was vacuum-deposited on the light emitting layer to form an electron transport layer with a thickness of 200 Ȧ. LiF was vacuum-deposited on the electron transport layer to form an electron injection layer with a thickness of 80 Ȧ, and then Al was vacuum-deposited on the electron injection layer to form a cathode with a thickness of 3...

Embodiment 2

[0150] An organic light-emitting diode was prepared in the same manner as in Example 1, except that Compound 4 prepared in Synthesis Example 2 was used as the electron transport layer material.

Embodiment 3

[0152] An organic light-emitting diode was prepared in the same manner as in Example 1, except that Compound 7 prepared in Synthesis Example 3 was used as the electron transport layer material.

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Abstract

Imidazopyridine-based compounds and organic light emitting diodes (OLEDs) including organic layers including the imidazopyridine-based compounds are provided. The organic light emitting diodes including organic layers having the imidazopyridine-based compounds have low driving voltages, high efficiencies, high luminance, long life-times and low power consumption.

Description

[0001] Cross references to related patent applications [0002] This application claims priority and benefit to Korean Patent Applications Nos. 10-2006-0117092 and 10-2007-0074097 filed in the Korean Intellectual Property Office on Nov. 24, 2006 and Jul. 24, 2007, respectively, incorporated herein by The entire content is for reference only. technical field [0003] The present invention relates to imidazopyridine-based compounds and organic light-emitting diodes comprising an organic layer comprising the compounds. More particularly, the present invention relates to an imidazopyridine-based compound suitable for an electron transport layer of an organic light emitting diode, and an organic light emitting diode including an organic layer containing the compound. Background technique [0004] Organic light emitting diodes (OLEDs) are self-emitting diodes with wide viewing angles, excellent contrast ratio, and fast response time. [0005] Also, organic light emitting diodes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D471/04H01L51/00H01L51/50H01L51/54
CPCC07D471/04C07C15/28H05B33/00H10K85/615H10K85/6572H10K50/16
Inventor 金喜妍梁承珏申定翰李昌浩高熙周
Owner SAMSUNG DISPLAY CO LTD
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