发明名称 |
LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE |
摘要 |
A light-emitting element having high external quantum efficiency is provided. A light-emitting element having a long lifetime is provided. A light-emitting layer is provided between a pair of electrodes. The light-emitting layer is a stack of a first light-emitting layer, which contains at least a first phosphorescent compound, a first organic compound having an electron-transport property, and a second organic compound having a hole-transport property and is provided on the anode side, and a second light-emitting layer, which contains at least a second phosphorescent compound and the first organic compound having an electron-transport property. A combination of the first organic compound and the second organic compound forms an exciplex. |
申请公布号 |
KR20150005575(A) |
申请公布日期 |
2015.01.14 |
申请号 |
KR20147030679 |
申请日期 |
2013.03.22 |
申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
SEO HIROMI;SHITAGAKI SATOKO;SEO SATOSHI;USHIKUBO TAKAHIRO;SASAKI TOSHIKI;UESAKA SHOGO |
分类号 |
C09K11/06;H01L51/50;H05B33/12 |
主分类号 |
C09K11/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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