摘要:
A method of processing a semiconductor substrate includes the step of subjecting a semiconductor substrate to a heat treatment under a gaseous atmosphere. The method comprises the step of subjecting a semiconductor substrate to a heat treatment at temperatures not lower than 1100.degree. C. under a non-oxidizing atmosphere, wherein heat treatments before said heat treatment applied to the semiconductor substrate are applied under heat treating temperatures and heat treating time which fall within a region defined by a line connecting four points of (900.degree. C., 4 minutes), (800.degree. C., 40 minutes), (700.degree. C., 11 hours) and (600.degree.0 C., 320 hours) in a graph, in which the heat treating temperature is plotted on the abscissa and the heat treating time is plotted on the ordinate of the graph.
摘要:
A method of processing a semiconductor substrate includes the step of subjecting a semiconductor substrate to a heat treatment under a gaseous atmosphere. The method comprises the step of subjecting a semiconductor substrate to a high temperature heat treatment at temperatures not lower than 1100.degree. C. under a non-oxidizing atmosphere, wherein heat treatments before the high temperature heat treatment applied to the semiconductor substrate are applied under heat treating temperatures and heat treating time which fall within a region defined by a line connecting four points of (900.degree. C., 4 minutes), (800.degree. C., 40 minutes), (700.degree. C., 11 hours) and (600.degree. C., 320 hours) in a graph, in which the heat treating temperature is plotted on the abscissa and the heat treating time is plotted on the ordinate of the graph.
摘要:
A method for fabricating a semiconductor device on a silicon substrate, consists of producing a silicon oxide film on the silicon substrate producing a thin silicon nitride film on the silicon oxide film, thermally nitriding the silicon nitride film in an atmosphere of nitrogenous gas, producing a conductive film on the silicon nitride film nitrided in the atmosphere of the nitrogenous gas, producing a gate region from the silicon oxide film, the silicon nitride film, and the conductive film, a channel region being positioned under the gate region in the silicon substrate, producing a source region in the silicon substrate adjacent to one side of the channel region, producing a drain region in the silicon substrate adjacent to another side of the channel region, and producing wiring regions on the source region, the drain region, and the gate region.
摘要:
A method of manufacturing a semiconductor device, which comprises the steps of providing a semiconductor substrate having a first primary surface which is designated to form the semiconductor device and a second primary surface opposite from the first primary surface, the substrate containing contaminants therein; forming a boron-doped layer on the second primary surface of the substrate; and absorbing the contaminants into the boron-doped layer.
摘要:
A method and an apparatus for heat treating in a heat treating apparatus having a heating chamber to be introduced with predetermined gas, a heater disposed around the heating chamber, and jigs disposed in the heating chamber for supporting wafers of a plurality of substrates to be treated in parallel with each other, wherein in order to make the temperature distribution of the wafers of the substrates to be treated in the radial direction uniform in the heat treatment, the jigs are formed to determine the sizes and the shape thereof in predetermined ranges having a gradient according to the heat treating method having a predetermined shape determining procedure so that the jigs are formed in ring-shaped trays (i.e. support-ring) for holding at the peripheries the substrates to be treated and the thickness of the tray is constant or such that the outer peripheral side thereof is thicker than the inner peripheral side thereof.
摘要:
To form a good quality silicon oxide film provided with both a superior Qbd characteristic and Rd characteristic, a wafer W is loaded into a plasma treatment apparatus where the surface of a silicon layer 501 of the wafer W is treated by plasma oxidation to form on the silicon layer 501 to a film thickness T1 a silicon oxide film 503. Next, the wafer W on which the silicon oxide film 503 is formed is transferred to a thermal oxidation treatment apparatus where the silicon oxide film 503 is treated by thermal oxidation to thereby form a silicon oxide film 505 having a target film thickness T2.
摘要:
A semiconductor device formed on a silicon substrate consisting of the steps of producing a silicon oxide film on the silicon substrate, producing a thin silicon nitride film on the silicon oxide film, thermally nitriding the silicon nitride film in an atmosphere of nitrogenous gas, producing a conductive film on the silicon nitride film nitrided in the atmosphere of the nitrogenous gas, producing a gate region from the silicon oxide film, the silicon nitride film, and the conductive film, a channel region being positioned under the gate region in the silicon substrate, producing a source region in the silicon substrate adjacent to one side of the channel region, producing a drain region in the silicon substrate adjacent to another side of the channel region, and producing wiring regions on the source region, the drain region, and the gate region.
摘要:
A MOS structure is formed on a silicon semiconductor substrate surface using a first gate electrode film made of polysilicon, an element isolation groove reaching the inside of the silicon semiconductor substrate is formed, and an insulating film is filled in the groove. In addition, a second gate electrode film made of a refractory metal such as molybdenum silicide is formed to be connected to the first gate electrode film, and the first and second gate electrode films are simultaneously removed to form a MOS gate electrode and a wiring layer.
摘要:
In order to form an insulating film, which constitutes a flat interface with silicon, by CVD, a surface of silicon is oxidized to form a silicon oxide film using a plasma treatment apparatus in which microwaves are introduced into a chamber through a flat antenna having a plurality of holes. A silicon oxide film is formed as an insulating film on the silicon oxide film by CVD. Further, in the plasma treatment apparatus, a treating gas containing a noble gas and oxygen is introduced into the chamber, and, further, microwaves are introduced into the chamber through the flat antenna. Plasma is generated under a pressure in the range of not less than 6.7 Pa and not more than 533 Pa to modify the insulating film with the plasma.
摘要:
A method of screening a semiconductor device. A silicon wafer having gate electrodes formed on the gate oxide film is prepared. An insulating layer is deposited on the silicon wafer. Gate electrode portions of a group of transistors to be tested are exposed. A conductive layer is deposited on the silicon wafer having exposed gate electrodes. The conductive layer is patterned to be a wiring layer so that the gate electrodes of a group of the transistors can be electrically connected to each other. The chip area to be tested is irradiated with light having intensity enough to generate a required quantity of carriers in a depletion layer between a well and a substrate. A predetermined test voltage is applied between the wiring layer and the substrate of the silicon wafer during irradiation of the light to measure current flowing through the wiring layer and the gate oxide film. An abnormality of the gate oxide film can be detected on the basis of the measured current value. The screening method may be conducted before the completion of forming the gate electrodes. Further, gate electrode portions not to be used by a user may not be electrically connected to the gate electrode portions to be used.