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Organic-light-emitting-device-with-light-transmissive-anode-and-light-transmissive-cathode-including-zinc-doped-indium-oxide

Melt spinning apparatus

That which is claimed is: 1. A melt spinning apparatus adapted for dividing a molten meterial into ...

Novel inertance loop construction for air sweep fluidic oscillator

OF THE INVENTION In general, fluidic oscillators according to the invention have an interaction ...

Head tooling parison adapter plates

I claim: 1. Plastic blow molding equipment consisting of: a die housing having a tubular chamber ...

Adhesive spray gun and nozzle attachment

OF THE DRAWINGS The structure, operation and advantages of the presently preferred embodiment of ...

Process for preparing non-woven webs

What is claimed is: 1. A process for producing a non-woven web of thermoplastic polymer fibers ...

Melt blow die

To these ends, according to the present invention, there is provided a melt blow die comprising: a ...

Fluidic oscillating nozzle

The two requirements of high impact energy density (requiring a zero-degree jet) and the large area ...

Fluidic oscillating nozzle

The two requirements of high impact energy density (requiring a zero-degree jet) and the large area ...

Spinning pack for wet spinning bicomponent filaments

The present invention provides a spinning pack useful for wet spinning bicomponent filaments. The ...

Process and system for producing multi-layer extrudate

An object of the invention is to make available a coextrusion adapter with an adjustable slide, ...

Organic light-emitting device with light transmissive anode and light transmissive cathode including zinc-doped indium oxide

Details

Inventors: Arai, Michio;
Assignee: TDK Corporation (Tokyo, JP)
Primary Examiner: O'Shea; Sandra
Assistant Examiner: DelGizzi; Ronald E.
Attorney, Agent or Firm: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.

An organic EL light emitting device has a light emitting layer between a cathode and an anode. Both the cathode and the anode are light transmissive. The cathode includes a conductor layer of a metal or alloy with a work function of up to 4 eV having a thickness of up to 10 nm on the light emitting layer side, a transparent electrode of zinc-doped indium oxide on a side remote from the light emitting layer, and optionally a buffer layer between the conductor layer and the transparent electrode. Light emission can exit from the device on both the cathode and anode sides.

DETAILED DESCRIPTION An object of the present invention is to provide an organic EL light emitting device having a cathode which is light transmissive without a need for heat treatment so that light emission can be taken out from both the cathode and anode sides.
The present invention provides an organic EL light emitting device comprising a light emitting layer between a cathode and an anode.
Both the cathode and the anode are light transmissive.
The cathode includes a conductor layer of a metal or alloy with a work function of up to 4 eV having a thickness of up to 10 nm on the light emitting layer side and a transparent electrode of zinc-doped indium oxide on a side remote from the light emitting layer.
The cathode may further include a buffer layer between the conductor layer and the transparent electrode.

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