Organic electroluminescence device and light emitting apparatus

Details Organic electroluminescence device and light emitting apparatus Organic electroluminescence device and light emitting apparatus

2007-03-02

2010-12-14

Williams, Joseph L (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

Reexamination Certificate

active

07851991

ABSTRACT:
There is provided an organic electroluminescence device includes: a pair of electrodes formed of an anode and a cathode; and an organic compound layer provided between the pair of electrodes, in which the organic electroluminescence device contains a cesium suboxide in which an element ratio A/B calculated from an area ratio of a peak A at a binding energy of 726.0 eV±0.5 eV corresponding to a Cs3d5 orbital measured by X-ray photoelectron spectroscopy to a peak B at binding energy of 531.0 eV±0.5 eV corresponding to an O1s orbital measured by the X-ray photoelectron spectroscopy is in a range of 3.1 to 7.3. The organic electroluminescence device has excellent light emitting property that is not largely impaired even after the device is driven for a long time period.

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PCT Notification Concerning Transmittal of International Preliminary Report on Patentability (Chapter 1 or Chapter 2 of the Patent Cooperation Treaty) (Form PCT/IB/338); International Preliminary Report on Patentability (Chapter 1 of the Patent Cooperation Treaty) (Form PCT/IB/373); Written Opinion of The International Searching Authority (Form PCT/ISA/237), regarding Internation Application No. PCT/JP2007/054599.

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