摘要:
A deep submicron MOS device having a self-aligned silicide gate structure and a method for forming the same is provided so as to overcome the problems of poly-Si depletion and boron penetration. A first Nickel silicide layer is formed between a gate oxide and a polycrystalline silicon gate electrode. Further, second Nickel silicide layers are formed over highly-doped source/drain regions. In this fashion, the reliability of the MOS device will be enhanced.
摘要:
A method for producing a small feature in a semiconductor device includes depositing a mask material on an unpatterned layer in which an ultra-narrow opening is to be formed, and then masking and etching the mask material to form a narrow opening. A spacer material is then deposited on the mask material, with spacer material settling into and covering the narrow opening. Thereafter, a portion of the spacer material is removed by etching, leaving some spacer material in the opening but exposing an ultra-narrow region of the first layer at the bottom of the opening in the mask material. The ultra-narrow region left uncovered by the spacer material is smaller than the narrow region in the mask material. Once the ultra-narrow region is uncovered, material in the first layer is removed through the ultra-narrow region, by anisotropic etching, for example, to form an ultra-narrow opening in the first layer.
摘要:
A method of manufacturing an MOS transistor having a gate length dimension less than the dimension available by methods available with conventional manufacturing methods that are limited by optical diffraction in photolithography. The method includes forming a polysilicon gate structure on a gate oxide layer, forming a nitrogen-doped layer on the polysilicon gate structure, forming selected depth oxide sidewalls on the polysilicon gate structure and etching the nitrogen-doped layer and the oxide sidewalls.
摘要:
A multilayer semiconductor structure includes a conductive via. The conductive via includes a reservoir of metal having a high resistance to electromigration. The reservoir is made from a conformal layer of copper, or gold deposited over the via to form a copper, or gold plug located in the via. A barrier layer is provided between the reservoir and an insulating layer to prevent the reservoir from diffusing into the insulating layer. The barrier layer and reservoir may be deposited by sputtering, collimated sputtering, chemical vapor deposition (CVD), dipping, evaporating, or by other means. The barrier layer and reservoir may be etched by anisotropic dry etching, plasma-assisted etching, or other layer removal techniques.
摘要:
Submicron contacts/vias and trenches are provided in a dielectric layer by forming an opening having an initial dimension and reducing the initial dimension by depositing a second dielectric material in the opening.
摘要:
A dual damascene method of fabricating an interconnection level of conductive lines and connecting vias separated by insulation for integrated circuits and substrate carriers for semiconductor devices using a thin protective via mask to form the via openings. A conductive line mask pattern is used to form conductive line openings in an insulating layer. Next, a thin protective layer of conformal material is deposited in the conducive line opening. The protective layer and the insulating layer each have etch resistance to others etchant. Using a via mask pattern, openings are etching the protective layer with the insulating layer serving as and etch stop. Next via openings are etched in the insulating material using the openings in the thin protective layer as the etch mask. If the protective layer is a conductive material, it is removed from the surface of the insulating layer either before or after the conductive line and via openings are filled with a conductive material. If the protective material is an insulating material, it is entirely removed before filling the conductive line and via openings conductive material.
摘要:
A double gate metal-oxide semiconductor field-effect transistor (MOSFET) includes a fin, a first gate and a second gate. The first gate is formed on top of the fin. The second gate surrounds the fin and the first gate. In another implementation, a triple gate MOSFET includes a fin, a first gate, a second gate, and a third gate. The first gate is formed on top of the fin. The second gate is formed adjacent the fin. The third gate is formed adjacent the fin and opposite the second gate.
摘要:
A method of manufacturing semiconductor fins for a semiconductor device may begin by providing a bulk semiconductor substrate. The method continues by growing a layer of first epitaxial semiconductor material on the bulk semiconductor substrate, and by growing a layer of second epitaxial semiconductor material on the layer of first epitaxial semiconductor material. The method then creates a fin pattern mask on the layer of second epitaxial semiconductor material. The fin pattern mask has features corresponding to a plurality of fins. Next, the method anisotropically etches the layer of second epitaxial semiconductor material, using the fin pattern mask as an etch mask, and using the layer of first epitaxial semiconductor material as an etch stop layer. This etching step results in a plurality of fins formed from the layer of second epitaxial semiconductor material.
摘要:
A method of manufacturing an integrated circuit (IC) utilizes a shallow trench isolation (STI) technique. The shallow trench isolation technique is used in strained silicon (SMOS) process. The liner for the trench is formed from a semiconductor or metal layer which is deposited in a low temperature process which reduces germanium outgassing. The low temperature process can be a ALD process.
摘要:
A method of manufacturing an integrated circuit (IC) utilizes a shallow trench isolation (STI) technique. The shallow trench isolation technique is used in strained silicon (SMOS) process. The liner for the trench is formed to in a low temperature process which reduces germanium outgassing. The low temperature process can be a UVO, ALD, CVD, PECVD, or HDP process.