摘要:
A method of forming an integrated circuit device includes forming a diffusion barrier layer in an opening defined in a substrate; forming a highly doped copper alloy seed layer over the diffusion barrier layer, the copper alloy seed layer having a minority alloy component having a concentration greater than 0.5% atomic; and forming a copper layer over the copper alloy seed layer so as to define a wiring structure of the integrated circuit device.
摘要:
A barrier film for a semiconductor device structure. The barrier film includes a compound including nitrogen and at least one of titanium or tantalum, nitrogen in a concentration that varies within the barrier film, and oxygen in a concentration that varies within the barrier film.
摘要:
A barrier film for a semiconductor device structure. The barrier film includes a compound including nitrogen and at least one of titanium or tantalum, nitrogen in a concentration that varies within the barrier film, and oxygen in a concentration that varies within the barrier film.
摘要:
A method of forming a metal interconnect structure includes forming a copper line within an interlevel dielectric (ILD) layer; directly doping a top surface of the copper line with a copper alloy material; and forming a dielectric layer over the ILD layer and the copper alloy material; wherein the copper alloy material serves an adhesion interface layer between the copper line and the dielectric layer.
摘要:
An integrated circuit structure is disclosed that has a layer of logical and functional devices and an interconnection layer above the layer of logical and functional devices. The interconnection layer has a substrate, conductive features within the substrate and caps positioned only above the conductive features.
摘要:
A hardmask layer in the back end of an integrated circuit is formed from TaN having a composition of less than 50% Ta and a resistivity greater than 400 μOhm-cm, so that it is substantially transparent in the visible and permits visual alignment of upper and lower alignment marks through the hardmask and intervening layer(s) of ILD. A preferred method of formation of the hardmask is by sputter deposition of Ta in an ambient containing N2 and a flow rate such that (N2 flow)/(N2+carrier flow)>0.5.
摘要翻译:集成电路后端的硬掩模层由具有小于50%Ta且电阻率大于400μΩ-cm的组成的TaN形成,使得其在可见光中基本上是透明的并且允许上和 通过硬掩模和ILD的中间层降低对准标记。 形成硬掩模的优选方法是通过在含有N 2 O 2的环境中溅射沉积Ta并使流速使得(N 2 N 2 O 2)/(N 2 +载体流)> 0.5。
摘要:
An integrated circuit structure is disclosed that has a layer of logical and functional devices and an interconnection layer above the layer of logical and functional devices. The interconnection layer has a substrate, conductive features within the substrate and caps positioned only above the conductive features.
摘要:
A method for fabricating a microelectronic structure includes forming a via aperture through a dielectric layer located over a substrate having a conductor layer therein, to expose the conductor layer. The conductor layer typically comprises a copper containing material. The method also includes etching the conductor layer to form a recessed conductor layer prior to etching a trench aperture within the dielectric layer. The trench aperture is typically contiguous with the via aperture to form a dual damascene aperture. By etching the conductor layer after forming the via aperture and before forming the trench aperture, such a dual damascene aperture is formed with enhanced dimensional integrity.
摘要:
An interconnect structure in the back end of the line of an integrated circuit forms contacts between successive layers by removing material in the top surface of the lower interconnect in a cone-shaped aperture, the removal process extending through the liner of the upper aperture, and depositing a second liner extending down into the cone-shaped aperture, thereby increasing the mechanical strength of the contact, which then enhance the overall reliability of the integrated circuit.
摘要:
An interconnect structure in the back end of the line of an integrated circuit forms contacts between successive layers by removing material in the top surface of the lower interconnect in a cone-shaped aperture, the removal process extending through the liner of the upper aperture, and depositing a second liner extending down into the cone-shaped aperture, thereby increasing the mechanical strength of the contact, which then enhance the overall reliability of the integrated circuit.