摘要:
A method of manufacturing ULSI wiring in which wiring layers are separately formed via a diffusion prevention layer and an insulating interlayer portion made of SiO2. The method comprises the steps of treating, with a silane compound, a SiO2 surface of the insulating interlayer portion on which the diffusion layer is to be formed, performing catalyzation with an aqueous solution containing a palladium compound, forming the diffusion prevention layer by electroless plating, and then forming the wiring layer on this diffusion prevention layer. A capping layer may be formed on the wiring layer by electroless plating. Consequently, a diffusion prevention layer having good adhesive properties can be formed through a simple wet process, and, the wiring layer can directly be formed on this diffusion prevention layer by a wet process. The capping layer can also be directly formed on the wiring layer by electroless plating.
摘要:
A semiconductor device of improved stress-migration resistance and reliability includes an insulating film having formed therein a lower interconnection consisting of a barrier metal film and a copper-silver alloy film, on which is then formed an interlayer insulating film. In the interlayer insulating film is formed an upper interconnection consisting of a barrier metal film and a copper-silver alloy film. The lower and the upper interconnections are made of a copper-silver alloy which contains silver in an amount more than a solid solution limit of silver to copper.
摘要:
The method of manufacturing a semiconductor device according to the present invention includes: forming an interconnect trench in an insulating film formed on a semiconductor substrate (S100); forming a barrier metal layer on the whole surface of the insulating film (S102); forming a copper layer on the whole surface of the barrier metal layer so that the copper layer is embedded in the interconnect trench (S104); removing the copper layer outside the interconnect trench by polishing under a condition that the barrier metal layer is left on the surface of the insulating film (S106); selectively forming a cap metal layer on the copper layer formed in the interconnect trench after the step of removing the copper layer by polishing (S108); and flattening the cap metal layer by polishing (S110).
摘要:
The object of the present invention is to provide a copper wiring structure in which finely processed copper wiring in a wiring structure in grooves is steadily formed with a high reliability and a method for fabricating the same, wherein an electroconductive carbon layer is formed between the copper material—a copper wiring of a wiring structure in grooves in which the copper material is buried into a wiring groove or holes formed in the organic interlayer film mainly composed of carbon—and the organic interlayer film. This electroconductive carbon layer is formed after forming wiring grooves or holes in the desired region of the organic interlayer film, by a modification of the inner wall of the wiring grooves or holes by plasma irradiation. The copper wiring of the wiring structure in grooves as described above is formed by depositing copper on the electroconductive carbon layer.
摘要:
The object of the present invention is to provide a copper wiring structure in which finely processed copper wiring in a wiring structure in grooves is steadily formed with a high reliability and a method for fabricating the same, wherein an electroconductive carbon layer is formed between the copper material—a copper wiring of a wiring structure in grooves in which the copper material is buried into a wiring groove or holes formed in the organic interlayer film mainly composed of carbon—and the organic interlayer film. This electroconductive carbon layer is formed, after forming wiring grooves or holes in the desired region of the organic interlayer film, by a modification of the inner wall of wiring grooves or holes by plasma irradiation. The copper wiring of the wiring structure in grooves as described above is formed by depositing copper on the electroconductive carbon layer.
摘要:
An apparatus for plating a substrate includes plural plating baths that are each separately provided with (a) an individual temperature adjuster that includes a heater, a cooling jacket, and a temperature controller, or (b) an individual pressure application device for distorting the substrate.
摘要:
A field effect transistor comprising first and second electrodes, semiconductor layers connected to these electrodes to form a carrier channel between them and a control electrode is provided. Said semiconductor layers consisting essentially of: (a) a first semiconductor layer of a first semiconductor material having a low density of state of carrier formed on a substrate, (b) a second semiconductor layer of a second semiconductor material containing an impurity element and having a high density of state of carrier formed on the first semiconductor layer, and (c) a third semiconductor layer of a third semiconductor material having a low density of state of carrier formed on the second semiconductor layer, wherein the impurity element contained in the second semiconductor layer is of n-type when the carrier is an electron or of p-type when the carrier is a hole. By such combination as above of layers of low carrier density of state but high carrier mobility layers and a layer of low carrier mobility but high carrier density of state, higher concentration doping has been made possible. This is effective to realize a high performance FET suitable for larger scale integration.
摘要:
The method of manufacturing the metal-semiconductor junction in accordance with the present invention includes the step of forming a 2.times.2 surface superstructure in an ultrahigh vacuum by removing an oxide layer by means of a heat cleaning at temperatures not lower than 600.degree. C. while irradiating a (111) A or (111) B surface of a zincblende-type III-V compound semiconductor substrate with a beam of a group V element, the step of cooling the substrate down to room temperature while maintaining the surface superstructure and the step of depositing a metal on the surface.
摘要:
Focusing on the criterion of “Energy save” or “Quiet noise” or other suitable operating parameter and considering the existing limitation of the operation of the electro-dynamic shaker system, apparatus for optimizing the operating condition of the vibration test system is proposed. The apparatus 100 measures the field current and drive current under the state that the desired vibration is fed to the specimen 20, and calculates the necessary force the shaker 1 should supply. Field current is supposed to be varied, and the necessary drive current is calculated based on the necessary force data. Further, the blower rotation is supposed to be varied, and the total power consumption at the coils and the blower is calculated. Also the temperatures of the field coil 4 and of the drive coil 10 is estimated and checked whether within the limitation. Then the optimal operating condition for the focused criterion is selected.
摘要:
In a semiconductor device, an insulating interlayer is provided above a semiconductor substrate, and a plurality of first wiring layers and a plurality of second wiring layers are formed in the insulating interlayer. The first wiring layers are substantially composed of copper, and are arranged in parallel at a large pitch. The second wiring layers are substantially composed of copper, and are arranged in parallel at a small pitch. A first metal capping layer is formed on each of the first wiring layers, and a second metal capping layer is formed on each of the second wiring layers. The second metal capping layer has a smaller thickness than that of the first metal capping layer.