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Organic electroluminescent device

專利號(hào)
US11177444B2
公開日期
2021-11-16
申請(qǐng)人
LG CHEM, LTD.（KR Seoul）
發(fā)明人
Dongheon Kim; Kongkyeom Kim; Hyungjin Lee; Nansra Heo; Woochul Lee
IPC分類
C07C15/28; C07D471/10; C07D251/24; H01L51/00; H01L51/50; C07D307/91; C09K11/06
技術(shù)領(lǐng)域
group,or,aryl,heteroaryl,atoms,carbon,alkyl,layer,host,material
地域： Seoul

摘要

The present specification relates to an organic electroluminescent device comprising: a first electrode; a second electrode; and an organic material layer provided between the first electrode and the second electrode, wherein the organic material layer comprises a light emitting layer and an electron transfer layer, the light emitting layer comprises a first host material, a second host material and a dopant material, the first host material has a HOMO energy level of ?5.9 eV or lower, and the second host material has a HOMO energy level higher than a HOMO energy level of the first host material by 0.1 eV to 0.2 eV.

說明書

According to one embodiment of the present specification, Ar11 and Ar13 are the same as or different from each other, and each independently a phenyl group unsubstituted or substituted with an aryl group; a biphenyl group; a naphthyl group unsubstituted or substituted with an aryl group; a thiophenyl group unsubstituted or substituted with an aryl group; a naphthobenzofuran group; or an indolocarbazole group.

According to one embodiment of the present specification, Ar11 and Ar13 are the same as or different from each other, and each independently a substituted or unsubstituted aryl group having 6 to 50 carbon atoms.

According to one embodiment of the present specification, Ar11 and Ar13 are the same as or different from each other, and each independently a substituted or unsubstituted phenyl group; a substituted or unsubstituted biphenyl group; or a substituted or unsubstituted naphthyl group.

According to one embodiment of the present specification, Ar11 and Ar13 are the same as or different from each other, and each independently a phenyl group unsubstituted or substituted with an aryl group; a biphenyl group; or a naphthyl group unsubstituted or substituted with an aryl group.

According to one embodiment of the present specification, Ar11 and Ar13 are the same as or different from each other, and each independently a phenyl group; a biphenyl group; or a naphthyl group.

權(quán)利要求

1
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