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Dendrimer and organic light-emitting device using the same

A dendritic polymer technology, applied in the field of dendritic polymers and organic light-emitting devices using the dendritic polymers, can solve the problems of difficult polymer synthesis and purification, difficult to control physical properties, etc.

Active Publication Date: 2012-05-02
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Because polymer synthesis and purification are difficult, and polymers have different molecular weights, it is difficult to manipulate physical properties that determine emission characteristics, such as energy levels and thermal properties

Method used

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  • Dendrimer and organic light-emitting device using the same
  • Dendrimer and organic light-emitting device using the same
  • Dendrimer and organic light-emitting device using the same

Examples

Experimental program
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Effect test

example 1

[0150] To make the anode, Corning 15Ω / cm 2 The ITO glass substrate was cut into a size of 50 mm×50 mm×0.7 mm, and then the glass substrate was ultrasonically treated in isopropanol and pure water for 5 minutes, respectively, and then cleaned by irradiating ultraviolet (UV) rays for 30 minutes and exposing to ozone. The resulting glass substrate was installed in a vacuum deposition apparatus.

[0151] The HIL was formed on the substrate by spin coating a PEDOT / PSS aqueous solution (manufactured by H.C. Starck) to a thickness of 40 nm. Then, HTLs were formed on the HILs by spin-coating dendrimers to a thickness of 2 to 80 nm. Then, the green fluorescent host (Alq 3 ) and green fluorescent dopant (C545T), thus forming a thickness of about EML.

[0152] Then, deposit Alq on the EML 3 , resulting in a thickness of approximately of ETL, and then deposit LiF (which is a halogenated alkali metal) on the ETL to form a thickness of about The EIL. Then, Al was vacuum-deposit...

example 2

[0155] An organic light-emitting device was fabricated in the same manner as in Example 1, except that the dendrimer 3 was used instead of the dendrimer 2 to form the HTL.

[0156] The organic light-emitting device at 50mA / cm 2 With a driving voltage of 5.67V at a current density of 8,445cd / m 2 High brightness, (0.310, 0.643) color coordinates and 16.89cd / A luminous efficiency.

example 3

[0158] An organic light-emitting device was fabricated in the same manner as in Example 1, except that the dendrimer 4 was used instead of the dendrimer 2 to form the HTL.

[0159] The organic light-emitting device at 50mA / cm 2 With a driving voltage of 5.52V at a current density of 8,623cd / m 2 High brightness, (0.301, 0.665) color coordinates and 17.24cd / A luminous efficiency.

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Abstract

A dendrimer and an organic light-emitting device including an organic layer having the dendrimer.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2010-0069170 filed with the Korean Intellectual Property Office on Jul. 16, 2010, the entire disclosure of which is hereby incorporated by reference. technical field [0002] The current embodiment relates to a dendrimer and an organic light emitting device including an organic layer having the dendrimer. Background technique [0003] An organic light emitting device includes an anode, a hole transport layer, an emission layer, an electron transport layer, and a cathode sequentially formed on a substrate. In this regard, the hole transport layer, emission layer, and electron transport layer are thin films including organic compounds. [0004] An organic light emitting device is a self-emitting device in which, when a current is applied to a fluorescent or phosphorescent organic layer, electrons recombine with holes in the organic layer, thereby emitting light. Since organic light emitting devices...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12C09K11/06H01L51/54H10K99/00
CPCC09K2211/1011C09K2211/1022H01L51/5012C08G83/002H01L51/0072C09K2211/1029H01L51/0061H01L51/5048C09K2211/1037C09K2211/1033C09K2211/1007H05B33/14C09K11/06H01L51/0095H01L51/5016Y10S428/917H10K85/636H10K85/791H10K85/6572H10K50/14H10K50/11H10K2101/10H10K50/00
Inventor 郭允铉李贞仁梁承珏金喜妍李在镛
Owner SAMSUNG DISPLAY CO LTD
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