发明名称 |
LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE |
摘要 |
A light-emitting element with a high current efficiency is provided. A low-power consumption light-emitting device is also provided. In addition, low-power consumption electronic device and lighting device are provided. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes a light-emitting layer. The light-emitting layer includes a first light-emitting layer and a second light-emitting layer. The emission peak of the second light-emitting layer is at a shorter wavelength than that of the first light-emitting layer. The first light-emitting layer includes a host material and a guest material. The LUMO level of the guest material is in the range of plus or minus 0.1 eV of the LUMO level of the host material. |
申请公布号 |
WO2015125044(A1) |
申请公布日期 |
2015.08.27 |
申请号 |
WO2015IB50977 |
申请日期 |
2015.02.10 |
申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
SASAKI, TOSHIKI;UESAKA, SHOGO;SEO, SATOSHI |
分类号 |
H05B33/12;H01L51/50 |
主分类号 |
H05B33/12 |
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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