Organic electroluminescent devices with additive

Details Organic electroluminescent devices with additive Organic electroluminescent devices with additive

2008-05-20

2008-05-20

Garrett, Dawn (Department: 1794)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C313S506000

Reexamination Certificate

active

07374828

ABSTRACT:
Disclosed is an electroluminescent device comprising a cathode and an anode and, located therebetween, a light-emitting layer (LEL) comprising a phosphorescent guest material, a hole- and electron-transporting host material, and an efficiency-enhancing material having an ionization potential lower than that of the host material and a triplet energy level that is lower than that of the phosphorescent guest material by no more than 0.2 eV. Such a device provides useful light emission features.

REFERENCES:
patent: 6573651 (2003-06-01), Adachi et al.
patent: 6893743 (2005-05-01), Sato et al.
patent: 2002/0071963 (2002-06-01), Fujii
patent: 2002/0086180 (2002-07-01), Seo et al.
patent: 2002/0139303 (2002-10-01), Yamazaki et al.
patent: 2002/0182441 (2002-12-01), Lamansky et al.
patent: 2002/0197511 (2002-12-01), D'Andrade et al.
patent: 2003/0091862 (2003-05-01), Tokito et al.
patent: 2003/0111666 (2003-06-01), Nishi et al.
patent: 2003/0141809 (2003-07-01), Furugori et al.
patent: 2004/0062947 (2004-04-01), Lamansky et al.
patent: 2005/0260440 (2005-11-01), Seo et al.
patent: 1 215 945 (2002-06-01), None
patent: 02/51206 (2002-06-01), None
M. A. Baldo, et al., “Very high-efficiency green organic light-emitting devices based on electrophosphorescence”, Applied Physics Letters, vol. 75, No. 1, 1999, pp. 4-6.
X. Zhou, et al., “ High-efficiency electrophosphorescent organic light-emitting diodes with double light-emitting layers”, Applied Physics Letters, vol. 81, No. 21, 2002, pp. 4070-4072.

Affiliated with

Also associated with

Rating

Organic electroluminescent devices with additive does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Organic electroluminescent devices with additive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Organic electroluminescent devices with additive will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2766140