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Title: 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:
;
Publication Date:
Research Org.:
The Regents of the University of Michigan, Ann Arbor, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1225699
Patent Number(s):
9,184,402
Application Number:
14/268,398
Assignee:
The Regents of the University of Michigan CHO
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 = {2015},
month = {11}
}

Patent:

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