摘要:
A method for implanting copper conductive layers in channel or via openings with alloying elements, such as magnesium, boron, tin, and zirconium. The implantation is performed after conductive layer chemical-mechanical-polishing (CMP) using a surface barrier layer as an implant barrier. With the surface barrier layer being removed by barrier layer CMP, this allows directed, heavy implantation of the conductive layer with the alloying elements.
摘要:
An integrated circuit and a method for manufacturing therefor is provided in which a partial dual damascene deposition is performed to place a barrier, seed, and conductive layer in most of a via between two interconnect channels and then capping the via with a further barrier, seed, conductive layer to prevent electromigration between an interconnect channel and the via.
摘要:
An integrated circuit and a method for manufacturing therefor is provided in which a partial dual damascene deposition is performed to place a barrier, seed, and conductive layer in most of a via between two interconnect channels and then capping the via with a further barrier, seed, conductive layer to prevent electromigration between an interconnect channel and the via.
摘要:
Workpieces, such as semiconductor wafers, are electroplated with improved thickness uniformity by providing a diffuser member intermediate the cathode and anode of a fountain-type electroplating apparatus. The diffuser or member has a pattern of openings specifically designed to prevent channeling and/or selective directing of electrolyte towards the workpiece. In one embodiment, the diffuser member comprises a spiral-shaped pattern of openings originating at the center of the diffuser member and extending to the periphery thereof.
摘要:
A semiconductor barrier layer and manufacturing method therefor for copper interconnects which is a tantalum-titanium, tantalum-titanium nitride, tantalum-titanium sandwich. The tantalum in the tantalum-titanium alloy bonds strongly with the semiconductor dielectric, the tantalum-titanium nitride acts as the barrier to prevent diffusion of copper, and the titanium bonds strongly with the copper.
摘要:
A semiconductor device is provided with a tantalum layer to line the channels and vias of a semiconductor, a tungsten nitride layer at a low temperature on the tantalum layer, and a copper conductor layer on the tungsten nitride layer. The tungsten nitride acts as a highly efficient copper barrier material with high resistivity while the tantalum layer acts as a conductive barrier material to reduce the overall resistance of the barrier layer.
摘要:
A method is provided for manufacturing a semiconductor device by: depositing a tantalum layer to line the channels and vias of a semiconductor; depositing a tungsten nitride layer at a low temperature on the tantalum layer; and depositing a copper conductor layer on the tungsten nitride layer. The tungsten nitride acts as a highly efficient copper barrier material with high resistivity while the tantalum layer acts as a conductive barrier material to reduce the overall resistance of the barrier layer.
摘要:
A method is provided for forming seed layers in a channel or via by applying a high bias to the material of the seed layer during deposition. This sputters off the seed layer overhang in order to reduce the electrical resistance of the seed layer, maintain its barrier effectiveness and enhance the subsequent filling of the channel or via by conductive materials.
摘要:
A method is provided for forming seed layers in semiconductor device channels or vias by using an inert gas sputter etching technique. The technique etches back the seed layers which results in a reduction of seed layer overhang at the top of the channels or vias, thereby enhancing the subsequent filling of the channel or vias by conductive materials.
摘要:
A method is provided for forming barrier layers in channel or via openings of semiconductors by using in-situ nitriding of barrier metals (Ta, Ti, or W) after they have been deposited in channel and via openings which will allow better control of the barrier metal/barrier material (Ta/TaN, Ti/TiN, or W/WN) composition, eliminate particle problems, and avoiding target poisoning.