Title:
LIGHT EMITTING DEVICE, LIGHT EMITTING APPARATUS, LIGHT EMITTING MODULE, ELECTRONIC DEVICE AND LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/023864
Kind Code:
A1
Abstract:
The present invention provides a light emitting device that has a high luminous efficiency. The present invention also provides a light emitting device that has a low drive voltage. A light emitting device according to the present invention comprises a first electrode, a first layer that is arranged on the first electrode, a second layer that is arranged on the first layer, a light emitting layer that is arranged on the second layer, and a second electrode that is arranged on the light emitting layer. The first layer comprises a first organic compound, while the second layer comprises a second organic compound. The ratio of the number of carbon atoms that form a bond with sp3 hybrid orbital relative to the total number of carbon atoms in the first organic compound is from 23% to 55%. The second organic compound contains fluorine.
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Inventors:
KAWANO YUTA (JP)
UEDA AIRI (JP)
WATABE TAKEYOSHI (JP)
OHSAWA NOBUHARU (JP)
SEO SATOSHI (JP)
UEDA AIRI (JP)
WATABE TAKEYOSHI (JP)
OHSAWA NOBUHARU (JP)
SEO SATOSHI (JP)
Application Number:
PCT/IB2021/056481
Publication Date:
February 03, 2022
Filing Date:
July 19, 2021
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
G09F9/30; H01L27/32; H01L51/50
Foreign References:
| CN110950762A | 2020-04-03 | |||
| JP2020073505A | 2020-05-14 | |||
| CN110373183A | 2019-10-25 | |||
| CN110343048A | 2019-10-18 | |||
| JP2007311759A | 2007-11-29 | |||
| JP2009147276A | 2009-07-02 | |||
| JP2007265763A | 2007-10-11 | |||
| JP2019192556A | 2019-10-31 | |||
| JP2005531915A | 2005-10-20 | |||
| JP2021118358A | 2021-08-10 |
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