Light emitting material, method of manufacturing the light...

Details Light emitting material, method of manufacturing the light... Light emitting material, method of manufacturing the light...

2004-05-27

2008-10-21

Guharay, Karabi (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C428S690000, C428S917000

Reexamination Certificate

active

07439669

ABSTRACT:
An organic EL device with a voltage applied across an anode and a cathode so that holes are moved in a hole transport layer and electrons are moved in an electron transport layer, and the holes and the electrons are recombined in a light emitting layer to emit light. The light emitting layer is formed of light emitting material having one or more kinds of metallic impurities. By using such a light emitting material, the decrease of light-emission luminance of the organic EL device can be suppressed.

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