Light emitting device and manufacturing method thereof
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Yasuyuki Arai
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AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Yasuyuki Arai
Estimating the term…
The concentration of oxygen, which causes problems such as decreases in brightness and dark spots through degradation of electrode materials, is lowered in an organic light emitting element having a layer made from an organic compound between a cathode and an anode, and in a light emitting device structured using the organic light emitting element. The average concentration of impurities contained in a layer made from an organic compound used in order to form an organic light emitting element having layers such as a hole injecting layer, a hole transporting layer, a light emitting layer, an electron transporting layer, and an electron injecting layer, is reduced to 5×1019/cm2 or less, preferably equal to or less than 1×1019/cm2, by removing the impurities with the present invention. Formation apparatuses are structured as stated in the specification in order to reduce the impurities in the organic compounds forming the organic light emitting elements.
A light emitting device comprising a light emitting element comprising an organic compound, wherein an oxygen concentration in the light emitting element is equal to or less than 1×1019/cm3.
A light emitting device comprising a layer comprising an organic compound formed between an anode and a cathode, wherein an oxygen concentration in the layer comprising the organic compound is equal to or less than 1×1019/cm3.
A light emitting device comprising a light emitting layer comprising an organic compound formed between an anode and a cathode, wherein an oxygen concentration in the light emitting layer is equal to or less than 1×1019/cm3.
A light emitting device comprising a material selected from the group consisting of a phthalocyanine-based organic compound and an aromatic amine-based organic compound, wherein a concentration of oxygen in the material is equal to or less than 1×1019/cm3.
A light emitting device comprising a material selected from the group consisting of a hole injecting layer comprising a phthalocyanine-based organic compound and a hole transporting layer comprising an aromatic amine-based organic compound,
A light emitting device comprising a material selected from the group consisting of a hole injecting layer comprising a phthalocyanine-based organic compound, a hole transporting layer comprising an aromatic amine-based organic compound, and a light emitting layer comprising a carbazole-based organic compound;
A light emitting device comprising:
A light emitting device comprising:
A light emitting device comprising:
A light emitting device comprising:
A light emitting device comprising:
A light emitting device comprising:
A light emitting device comprising:
A method of manufacturing a light emitting device, the method comprising:
A method of manufacturing a light emitting device, the method comprising:
A method of manufacturing a light emitting device, the method comprising:
A light emitting device comprising:
A light emitting device comprising:
A light emitting device comprising:
A light emitting device comprising:
Dependencies are inferred from the claim text.