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Organic compound, light-emitting element, light-emitting device, electronic device, and lighting device

專(zhuān)利號(hào)
US10868258B2
公開(kāi)日期
2020-12-15
申請(qǐng)人
Semiconductor Energy Laboratory Co., Ltd.
發(fā)明人
Miki Kurihara; Hideko Yoshizumi; Hiromitsu Kido; Tatsuyoshi Takahashi; Satoshi Seo
IPC分類(lèi)
H01L51/50; H01L51/00; C07D491/048; C07D495/04
技術(shù)領(lǐng)域
emitting,light,skeleton,8cz,layer,compound,in,phenyl,material,electron
地域： Kanagawa-ken

摘要

A novel organic compound is provided. Moreover, a light-emitting element with high emission efficiency and a long lifetime is provided. A novel organic compound having a bicarbazole skeleton and a benzofuropyrimidine skeleton or a benzothienopyrimidine skeleton that includes at least one condensed ring or two condensed rings is provided. Moreover, a light-emitting element including the organic compound is provided.

說(shuō)明書(shū)

<<Hole-Transport Layer>>

The hole-transport layer 112 is a layer containing a hole-transport material and can be formed using any of the hole-transport materials given as examples of the material of the hole-injection layer 111. In order that the hole-transport layer 112 has a function of transporting holes injected into the hole-injection layer 111 to the light-emitting layer 130, the HOMO level of the hole-transport layer 112 is preferably equal or close to the HOMO level of the hole-injection layer 111.

As the hole-transport material, a substance having a hole mobility of 1×10?6 cm2/Vs or higher is preferably used. Note that any substance other than the above substances may be used as long as the hole-transport property is higher than the electron-transport property. The layer including a substance having a high hole-transport property is not limited to a single layer, and two or more layers containing the aforementioned substances may be stacked.

<<Electron-Transport Layer>>

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