Organic EL emitting layer having specific concentration profile

Details Organic EL emitting layer having specific concentration profile Organic EL emitting layer having specific concentration profile

2011-04-19

2011-04-19

Macchiarolo, Peter (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C252S301160, C257S101000, C445S024000

Reexamination Certificate

active

07928652

ABSTRACT:
An organic EL element includes a pair of electrodes and an emitting layer interposed therebetween. The emitting layer is made of a mixture containing a host material and a dopant material. In the emitting layer, a concentration profile of the dopant material along a thickness direction includes at least two relative maximums or at least two relative minimums.

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