摘要:
A process for producing an integrated circuit on the surface of a substrate, the process including: producing a first layer, including active zones and insulating zones, on the surface of the substrate; producing gate zones on the surface of the first layer, the gate zones each being surrounded by insulating spacers; producing source/drain electrodes; producing a dielectric layer between the insulating spacers, the dielectric layer having an upper surface level with the upper surfaces of the gate zones; partially etching each gate zone so as to lower the upper surface of a first part of each gate zone; and depositing an insulating dielectric layer on the first parts of the gate zones.
摘要:
A process for producing an integrated circuit on the surface of a substrate, the process including: producing a first layer, including active zones and insulating zones, on the surface of the substrate; producing gate zones on the surface of the first layer, the gate zones each being surrounded by insulating spacers; producing source/drain electrodes; producing a dielectric layer between the insulating spacers, the dielectric layer having an upper surface level with the upper surfaces of the gate zones; partially etching each gate zone so as to lower the upper surface of a first part of each gate zone; and depositing an insulating dielectric layer on the first parts of the gate zones.
摘要:
A method for manufacturing a strained channel MOS transistor including the steps of: forming, at the surface of a semiconductor substrate, a MOS transistor comprising source and drain regions and an insulated sacrificial gate which partly extends over insulation areas surrounding the transistor; forming a layer of a dielectric material having its upper surface level with the upper surface of the sacrificial gate; removing the sacrificial gate; etching at least an upper portion of the exposed insulation areas to form trenches therein; filling the trenches with a material capable of applying a strain to the substrate; and forming, in the space left free by the sacrificial gate, an insulated MOS transistor gate.
摘要:
The method successively comprises production, on a substrate, of a stack of layers comprising at least one first layer made from germanium and silicon compound initially having a germanium concentration comprised between 10% and 50%. The first layer is arranged between second layers having germanium concentrations comprised between 0% and 10%. Then a first zone corresponding to the germanium-based element and having at least a first lateral dimension comprised between 10 nm and 500 nm is delineated by etching in said stack. Then at least lateral thermal oxidization of the first zone is performed so that a silica layer forms on the surface of the first zone and that, in the first layer, a central zone of condensed germanium forms, constituting the germanium-based element.
摘要:
The method successively comprises production, on a substrate, of a stack of layers comprising at least one first layer made from germanium and silicon compound initially having a germanium concentration comprised between 10% and 50%. The first layer is arranged between second layers having germanium concentrations comprised between 0% and 10%. Then a first zone corresponding to the germanium-based element and having at least a first lateral dimension comprised between 10 nm and 500 nm is delineated by etching in said stack. Then at least lateral thermal oxidization of the first zone is performed so that a silica layer forms on the surface of the first zone and that, in the first layer, a central zone of condensed germanium forms, constituting the germanium-based element.
摘要:
A process for producing two interleaved patterns on a substrate uses photolithography and etching to produce, on the substrate, a first pattern of first material protruding regions separated by recessed regions. A non-conformal deposition of a second material on the first pattern forms cavities in the recessed regions of the first pattern. These cavities are opened and filled with a third material. The second material is then removed, and the remaining third material forms a second pattern of third material protruding regions, wherein the second pattern is interleaved with the first pattern.
摘要:
A method for manufacturing a strained channel MOS transistor including the steps of: forming, at the surface of a semiconductor substrate, a MOS transistor comprising source and drain regions and an insulated sacrificial gate which partly extends over insulation areas surrounding the transistor; forming a layer of a dielectric material having its upper surface level with the upper surface of the sacrificial gate; removing the sacrificial gate; etching at least an upper portion of the exposed insulation areas to form trenches therein; filling the trenches with a material capable of applying a strain to the substrate; and forming, in the space left free by the sacrificial gate, an insulated MOS transistor gate.
摘要:
Source and drain electrodes are each formed by an alternation of first and second layers made from a germanium and silicon compound. The first layers have a germanium concentration comprised between 0% and 10% and the second layers have a germanium concentration comprised between 10% and 50%. At least one channel connects two second layers respectively of the source electrode and drain electrode. The method comprises etching of source and drain zones, connected by a narrow zone, in a stack of layers. Then superficial thermal oxidation of said stack is performed so a to oxidize the silicon of the germanium and silicon compound having a germanium concentration comprised between 10% and 50% and to condense the germanium Ge. The oxidized silicon of the narrow zone is removed and a gate dielectric and a gate are deposited on the condensed germanium of the narrow zone.
摘要:
A process for producing two interleaved patterns on a substrate uses photolithography and etching to produce, on the substrate, a first pattern of first material protruding regions separated by recessed regions. A non-conformal deposition of a second material on the first pattern forms cavities in the recessed regions of the first pattern. These cavities are opened and filled with a third material. The second material is then removed, and the remaining third material forms a second pattern of third material protruding regions, wherein the second pattern is interleaved with the first pattern.
摘要:
Source and drain electrodes are each formed by an alternation of first and second layers made from a germanium and silicon compound. The first layers have a germanium concentration comprised between 0% and 10% and the second layers have a germanium concentration comprised between 10% and 50%. At least one channel connects two second layers respectively of the source electrode and drain electrode. The method comprises etching of source and drain zones, connected by a narrow zone, in a stack of layers. Then superficial thermal oxidation of said stack is performed so a to oxidize the silicon of the germanium and silicon compound having a germanium concentration comprised between 10% and 50% and to condense the germanium Ge. The oxidized silicon of the narrow zone is removed and a gate dielectric and a gate are deposited on the condensed germanium of the narrow zone.