Organic electroluminescence element
US8987715B2 · kind B2 · utility
7Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2011 |
| Grant date | Mar 24, 2015 |
| Priority date | — |
| Expiry date | Jun 8, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
Abstract
An organic electroluminescence device (1) includes: an anode (3); a cathode (4); and an emitting layer (5) provided between the anode (3) and the cathode (4). The emitting layer contains a first host, a second host and a phosphorescent dopant. A triplet energy of each of the first host and the second host is 2.8 eV or more. An ionization potential of the first host is 5.5 eV or less. An affinity Af1 of the first host is smaller than an affinity Af2 of the second host.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.