Organic electroluminescent element, illuminator and display

Details Organic electroluminescent element, illuminator and display Organic electroluminescent element, illuminator and display

2004-07-08

2010-11-23

Patel, Nimeshkumar D (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C438S037000

Reexamination Certificate

active

07839075

ABSTRACT:
An organic electroluminescent element containing an anode and a cathode having therebetween a light emitting layer containing a phosphorescent compound, and hole blocking layer 1 provided adjacent to the light emitting layer and between the light emitting layer and the cathode, wherein hole blocking layer 1 contains a phosphorescent compound; and a content of the phosphorescent compound contained in hole blocking layer 1 is in the range of 0.1 to 50% of a content of the phosphorescent compound contained in the light emitting layer.

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