Phosphorescent organic light emitting diodes with high efficiency and brightness
Abstract
An organic light emitting device including a) an anode; b) a cathode; and c) an emissive layer disposed between the anode and the cathode, the emissive layer comprising an organic host compound and a phosphorescent compound exhibiting a Stokes Shift overlap greater than 0.3 eV. The organic light emitting device may further include a hole transport layer disposed between the emissive layer and the anode; and an electron transport layer disposed between the emissive layer and the cathode. In some embodiments, the phosphorescent compound exhibits a phosphorescent lifetime of less than 10 .mu.s. In some embodiments, the concentration of the phosphorescent compound ranges from 0.5 wt. % to 10 wt. %.
- Inventors:
- Issue Date:
- Research Org.:
- Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1225699
- Patent Number(s):
- 9184402
- Application Number:
- 14/268,398
- Assignee:
- The Regents of the University of Michigan
- DOE Contract Number:
- SC0001013
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2014 May 02
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
Citation Formats
Forrest, Stephen R, and Zhang, Yifan. Phosphorescent organic light emitting diodes with high efficiency and brightness. United States: N. p., 2015.
Web.
Forrest, Stephen R, & Zhang, Yifan. Phosphorescent organic light emitting diodes with high efficiency and brightness. United States.
Forrest, Stephen R, and Zhang, Yifan. Thu .
"Phosphorescent organic light emitting diodes with high efficiency and brightness". United States. https://www.osti.gov/servlets/purl/1225699.
@article{osti_1225699,
title = {Phosphorescent organic light emitting diodes with high efficiency and brightness},
author = {Forrest, Stephen R and Zhang, Yifan},
abstractNote = {An organic light emitting device including a) an anode; b) a cathode; and c) an emissive layer disposed between the anode and the cathode, the emissive layer comprising an organic host compound and a phosphorescent compound exhibiting a Stokes Shift overlap greater than 0.3 eV. The organic light emitting device may further include a hole transport layer disposed between the emissive layer and the anode; and an electron transport layer disposed between the emissive layer and the cathode. In some embodiments, the phosphorescent compound exhibits a phosphorescent lifetime of less than 10 .mu.s. In some embodiments, the concentration of the phosphorescent compound ranges from 0.5 wt. % to 10 wt. %.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Nov 12 00:00:00 EST 2015},
month = {Thu Nov 12 00:00:00 EST 2015}
}
Works referenced in this record:
Highly efficient organic light-emitting diodes from delayed fluorescence
journal, December 2012
- Uoyama, Hiroki; Goushi, Kenichi; Shizu, Katsuyuki
- Nature, Vol. 492, Issue 7428