摘要:
Generally, the present disclosure is directed to forming conductive metal fill materials in replacement gate electrodes using reduced deposition temperatures. One illustrative method disclosed herein includes, among other things, forming a sacrificial gate structure above a semiconductor layer, the sacrificial gate structure including a dummy gate electrode, and forming a gate cavity by removing at least the dummy gate electrode from above the semiconductor layer. The disclosed method further includes forming a work-function material of a replacement metal gate electrode in the gate cavity, and forming a conductive metal fill material in the gate cavity and above the work-function material, wherein forming the conductive metal fill material includes performing a material deposition process at a temperature below approximately 450° C.
摘要:
Generally, the present disclosure is directed to methods for reducing line edge roughness in hardmask integration schemes that are used for forming interconnect structures, such as conductive lines and the like. One illustrative method disclosed herein includes, among other things, forming a metal hardmask above a dielectric material and forming a first opening in the metal hardmask, the first opening comprising sidewalls, and the sidewalls having a surface roughness. The disclosed method further includes reducing the surface roughness of the sidewalls, and using the first opening with the sidewalls of reduced surface roughness to form a second opening in the dielectric material.
摘要:
In a semiconductor device, through hole vias or through silicon vias (TSV) may be formed so as to include an efficient stress relaxation mechanism, for instance provided on the basis of a stress relaxation layer, in order to reduce or compensate for stress forces caused by a pronounced change in volume of the conductive fill materials of the through hole vias. In this manner, the high risk of creating cracks and delamination events in conventional semiconductor devices may be significantly reduced.
摘要:
Disclosed herein are various methods of forming conductive structures, such as conductive lines and vias, using a dual metal hard mask integration technique. In one example, the method includes forming a first layer of insulating material, forming a first patterned metal hard mask layer above the first layer of insulating material, forming a second patterned metal hard mask layer above the first patterned metal hard mask layer, performing at least one etching process through both of the second patterned metal hard mask layer and the first patterned metal hard mask layer to define a trench in the first layer of insulating material and forming a conductive structure in the trench.
摘要:
Disclosed herein are various methods of forming conductive structures, such as conductive lines and vias, using a dual metal hard mask integration technique. In one example, the method includes forming a first layer of insulating material, forming a first patterned metal hard mask layer above the first layer of insulating material, forming a second patterned metal hard mask layer above the first patterned metal hard mask layer, performing at least one etching process through both of the second patterned metal hard mask layer and the first patterned metal hard mask layer to define a trench in the first layer of insulating material and forming a conductive structure in the trench.
摘要:
In a semiconductor device, through hole vias or through silicon vias (TSV) may be formed so as to include an efficient stress relaxation mechanism, for instance provided on the basis of a stress relaxation layer, in order to reduce or compensate for stress forces caused by a pronounced change in volume of the conductive fill materials of the through hole vias. In this manner, the high risk of creating cracks and delamination events in conventional semiconductor devices may be significantly reduced.
摘要:
Disclosed herein are various methods of filing voids in copper conductive structures on integrated circuit devices. In one example, the method includes the steps of forming a conductive copper structure in a layer of insulating material and performing an electroless deposition process to selectively form a fill layer comprised of a conductive material on the copper containing structure, the fill layer being adapted to at least partially fill any voids that may exist in the conductive copper structure.
摘要:
In a dual stress liner approach, unwanted material provided between closely spaced gate electrode structures may be removed to a significant degree on the basis of a wet chemical etch process, thereby reducing the risk of creating patterning-related irregularities. Consequently, the probability of contact failures in sophisticated interlayer dielectric material systems formed on the basis of a dual stress liner approach may be reduced.
摘要:
In complex semiconductor devices, sophisticated ULK materials may be used in metal line layers in combination with a via layer of enhanced mechanical stability by increasing the amount of dielectric material of superior mechanical strength. Due to the superior mechanical stability of the via layers, reflow processes for directly connecting the semiconductor die and a package substrate may be performed on the basis of a lead-free material system without unduly increasing yield losses.
摘要:
A method of manufacturing a semiconductor device begins by fabricating an n-type metal oxide semiconductor (NMOS) transistor structure on a semiconductor wafer. The method continues by forming an optically reflective layer overlying the NMOS transistor structure, forming a layer of tensile stress inducing material overlying the optically reflective layer, and curing the layer of tensile stress inducing material by applying ultraviolet radiation. Some of the ultraviolet radiation directly radiates the layer of tensile stress inducing material and some of the ultraviolet radiation radiates the layer of tensile stress inducing material by reflecting from the optically reflective layer.