Light-emitting element, light-emitting device, electronic device, and lighting device
US9461259B2 · kind B2 · utility
7Cited by
11References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 2015 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | May 21, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided is a light-emitting element having a light-emitting layer which contains at least a host material and a plurality of guest materials, where the host material has a lower T1 level than that of at least one of the plurality of guest materials. The emission of the one of the plurality of guest materials exhibits a multicomponent decay curve, and the lifetime thereof is less than or equal to 15 μsec, preferably less than or equal to 10 μsec, more preferably less than or equal to 5 μsec, where the lifetime is defined as a time for the emission to decrease in intensity to 1/100 of its initial intensity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.