Abstract: An organic EL device having a low driving voltage and exhibiting high luminous brightness and superior durability, and a method of manufacturing the same. The organic EL device has an anode layer, an organic light-emitting layer, and a cathode layer. An inorganic thin layer, comprising an inorganic compound of Ge, Sn, Zn, Cd, etc. and an inorganic compound of an element of Group 5A to Group 8 in the periodic table in combination, is provided between the anode layer and the organic light-emitting layer and between the cathode layer and the organic light-emitting layer, or the anode layer or the cathode layer comprises a chalcogenide of Si, Ge, Sn, Pb, Ga, In, Zn, Cd, Mg, etc. and an inorganic compound of an element of Group 5A to Group 8 in the periodic table in combination.

Abstract: An amine compound having a m-terphenyl group exhibits excellent heat resistance when the compound is used as a material constituting an organic electroluminescence device (an organic EL device). An organic EL device using the amine compound exhibits excellent luminance of emitted light and a long life. An organic EL device which contains the amine compound and an aromatic compound having a specific styryl group is also disclosed.

Abstract: The invention is to provide an organic EL device having a long life time that can reduce the driving voltage of the organic EL device, and to provide a material having a small ionization potential and exhibiting a large hole mobility by using as a layer or a zone. The organic electroluminescence device comprises a pair of electrodes and an organic light emitting layer sandwiched in the electrodes, characterized in that a hole transporting zone provided between the electrodes comprises the phenylenediamine derivative represented by the specific structural formulae, and the phenylenediamine derivative has a hole mobility of 10−4 cm2/V·s or more upon using as a layer or a zone, with the organic light emitting layer containing a charge injection auxiliary.

Abstract: Materials for organic electroluminescence devices and organic electroluminescence devices which exhibit high efficiency of light emission and have a long life and excellent heat resistance, novel compounds and processes for producing the materials for organic electroluminescence devices are provided.

Abstract: The invention is to provide an organic EL device having a long life time that can reduce the driving voltage of the organic EL device, and to provide a material having a small ionization potential and exhibiting a large hole mobility by using as a layer or a zone. The organic electroluminescence device comprises a pair of electrodes and an organic light emitting layer sandwiched in the electrodes, characterized in that a hole transporting zone provided between the electrodes comprises the phenylenediamine derivative represented by the specific structural formulae, and the phenylenediamine derivative has a hole mobility of 10−4 cm2/V·s or more upon using as a layer or a zone, with the organic light emitting layer containing a charge injection auxiliary.

Abstract: The present invention provides an organic electroluminescence element which includes an anode and a cathode which are opposite to each other, and a hole injection layer and a luminous layer which are interposed between these anode and cathode, wherein the hole injection layer has a glass transition temperature of 110 C. or more and includes an oligomer having a phenylenediamine structure, and wherein an intermediate layer for inhibiting a reaction in an interface between the hole injection layer and the anode is formed between the hole injection layer and the anode.

Abstract: Provided is a practical organic electroluminescent (EL) device, of which the luminance is not attenuated in long-term driving. The device has good luminous efficiency and durability. At least one organic compound to be used for forming the organic compound layer of the device has an electron spin number of not more than 1013 per mg of the compound.

Abstract: Disclosed is a practical, organic, blue-emitting EL device having a long life and having high luminous efficiency and good thermal stability. The device comprises organic compound layers, of which at least one is an organic blue-emitting layer, as sandwiched between a pair of electrodes, and is characterized in that the organic blue-emitting layer comprises an organic host compound having a fluorescence quantum efficiency of not smaller than 0.3 in a solid state and a fluorescent substance, and the organic host compound and the fluorescent substance are selected such that the device retains a monomeric blue-emitting ability, and that all the organic compound layers have a glass transition temperature of not lower than 75° C., while the organic compound layers adjacent to the organic blue-emitting layer have a glass transition temperature of not lower than 105° C.

Abstract: An organic EL device having a low driving voltage and exhibiting high luminous brightness and superior durability, and a method of manufacturing the same. The organic EL device has an anode layer, an organic light-emitting layer, and a cathode layer. An inorganic thin layer, comprising an inorganic compound of Ge, Sn, Zn, Cd, etc. and an inorganic compound of an element of Group 5A to Group 8 in the periodic table in combination, is provided between the anode layer and the organic light-emitting layer and between the cathode layer and the organic light-emitting layer, or the anode layer or the cathode layer comprises a chalcogenide of Si, Ge, Sn, Pb, Ga, In, Zn, Cd, Mg, etc. and an inorganic compound of an element of Group 5A to Group 8 in the periodic table in combination.

Abstract: The present invention is to provide an organic EL element which can secure the durability by which to endure the pulse driving and which has an excellent heat resistance. In an organic electroluminescence element in which a luminous layer and a hole injection layer are formed between an anode and a cathode, the hole injection layer is formed using an oligomer having a phenylenediamine structure and having a glass transition temperature of 110° C. or more, and an intermediate layer is formed between the hole injection layer and the anode to inhibit a chemical reaction in an interface between the anode and the hole injection layer. Consequently, it is possible to remarkably improve the heat resistance of the element, to secure the excellent durability capable of enduring severe driving conditions, and to realize the prolongation of life of the element.

Abstract: An organic EL device having a low driving voltage and exhibiting high luminous brightness and superior durability, and a method of manufacturing the same. The organic EL device has an anode layer, an organic light-emitting layer, and a cathode layer. An inorganic thin layer, comprising an inorganic compound of Ge, Sn, Zn, Cd, etc. and an inorganic compound of an element of Group 5A to Group 8 in the periodic table in combination, is provided between the anode layer and the organic light-emitting layer and between the cathode layer and the organic light-emitting layer, or the anode layer or the cathode layer comprises a chalcogenide of Si, Ge, Sn, Pb, Ga, In, Zn, Cd, Mg, etc. and an inorganic compound of an element of Group 5A to Group 8 in the periodic table in combination.

Abstract: Disclosed is a practical, organic, blue-emitting EL device having a long life and having high luminous efficiency and good thermal stability. The device comprises organic compound layers, of which at least one is an organic blue-emitting layer, as sandwiched between a pair of electrodes, and is characterized in that the organic blue-emitting layer comprises an organic host compound having a fluorescence quantum efficiency of not smaller than 0.3 in a solid state and a fluorescent substance, and the organic host compound and the fluorescent substance are selected such that the device retains a monomeric blue-emitting ability, and that all the organic compound layers have a glass transition temperature of not lower than 75° C., while the organic compound layers adjacent to the organic blue-emitting layer have a glass transition temperature of not lower than 105° C.

Abstract: Provided is a practical organic electroluminescent (EL) device, of which the luminance is not attenuated in long-term driving. The device has good luminous efficiency and durability. At least one organic compound to be used for forming the organic compound layer of the device has an electron spin number of not more than 1013 per mg of the compound.

Abstract: The present invention relates to an organic electroluminescence element and the manufacturing method thereof comprising an anode, semiconductor layer, organic light-emitting medium, and a cathode, an organic light-emitting medium is located between the first electrode and the semiconductor layer comprising the non-monocrystal material and the second electrode is electrically connected to the edge section of the semiconductor layer when either one of the anode or cathode is designated to the first electrode and the other electrode to the second electrode.

Abstract: Provided is a practical organic electroluminescent (EL) device, of which the luminance is not attenuated in long-term driving. The device has good luminous efficiency and durability. At least one organic compound to be used for forming the organic compound layer of the device has an electron spin number of not more than 1013 per mg of the compound.

Abstract: A practical, organic, blue-emitting EL device having a long life and having high luminous efficiency and good thermal stability. The device comprises organic compound layers, of which at least one is an organic blue-emitting layer, as sandwiched between a pair of electrodes, and is characterized in that the organic blue-emitting layer comprises an organic host compound having a fluorescence quantum efficiency of not smaller than 0.3 in a solid state and a fluorescent substance, and the organic host compound and the fluorescent substance are selected such that the device retains a monomeric blue-emitting ability, and that all the organic compound layers have a glass transition temperature of not lower than 75° C., while the organic compound layers adjacent to the organic blue-emitting layer have a glass transition temperature of not lower than 105° C.

Abstract: The present invention provides a triamine compound represented by general formula (I): ##STR1## an organic luminescence device which comprises an organic layer and a pair of electrodes disposed on both sides of the organic layer wherein the organic layer at least contains a layer of a light emitting zone and a layer of a hole transporting zone which comprises a hole injecting layer containing the triamine compound and a hole transporting layer, and an organic thin film comprising two layers which are a layer containing a compound represented by general formula (I) and having a thickness of 5 nm to 5 .mu.

Abstract: Organic electroluminescence devices having the life of light emission superior to those of conventional electroluminescence devices, and novel arylenediamine derivatives which can remarkably improve the life of light emission of an organic electroluminescence device when the derivatives are used as a component of the device, are disclosed.The organic electroluminescence devices of the present invention at least contain a p-phenylenediamine derivative having 6 or more benzene ring skeletons, or at least a 4,4'-biphenylenediamine derivative having 5 biphenyl groups.The arylenediamine derivatives of the present invention include p-phenylenediamine derivatives having 4 biphenyl groups and 4,4'-biphenylenediamine derivatives having 5 biphenyl groups.

Abstract: An electroluminescence device which includes an organic light-emitting layer and optionally one or more further layers disposed between a pair of electrodes, wherein at least one of the layers contains a silanamine compound which has the formula (I), ##STR1## wherein each of Ar.sup.1 and Ar.sup.3 is an optionally substituted aryl group and Ar.sup.2 is an optionally substituted arylene group.