Abstract:
Embodiments of the invention describe electrical contacts for integrated circuits and methods of forming using gas cluster ion beam (GCIB) processing. The electrical contacts contain a fused metal-containing layer formed by exposing a patterned structure to a gas cluster ion beam containing a transition metal precursor or a rare earth metal precursor.
Abstract translation:公开了一种半导体器件,包括由含有Si和O的材料制成的第一绝缘层,通过挖掘第一绝缘层而形成的凹槽,嵌入凹槽中的嵌入体,由主要包含Cu的金属材料制成,第二绝缘层 形成在第一绝缘层和嵌入体上并由含有Si和O的材料制成,以及形成在嵌入体和第二绝缘层之间以及嵌入体和第二绝缘层之间的阻挡层,并且由Mn x Si y O z (其中x,y和z是大于0的数字)。
Abstract:
The present invention relates to a method for fabricating a diffusion-barrier cap on a Cu-containing interconnect element that has crystallites of at least two different crystalorientations, comprisesselectively incorporating Si into only a first set of crystallites withat least one first crystalorientation, employing first process conditions, and subsequently selectively forming a first adhesion-layer portion comprising CuSi and a first diffusion-barrier-layer portion only on the first set of crystallites, thus forming a first barrier- cap portion, and subsequently selectively incorporating Si into only the second set of crystallites, employing second process conditions that differ from the first process conditions, and forming a second barrier-cap portion comprising a Si-containing second diffusion-barrier layer portion on the second set of crystallites of the interconnect element. The processing improves the properties of the diffusion-barrier cap and secures a continuous formation of a diffusion-barrier layer on the interconnect element.
Abstract:
The present invention relates to a method for fabricating a semiconductor device. For improving the adhesion between a copper-containing interconnect element and a diffusion barrier on top of it, a first dielectric layer (108) of a first dielectric material is deposited on an exposed surface (102.1) of the interconnect element. Susequently, particles (110) are implanted into the first dielectric layer and the interconnect element (102) so as to let the interconnect material mix with the first dielectric material in a first interface region (102.2) between the interconnect element and thefirst dielectric layer.
Abstract:
A seed layer is formed on a substrate using a first biological agent. The seed layer may comprise densified nanoparticles which are bound to the biological agent. The seed layer is then used for a deposition of a metal layer, such as a barrier layer, an interconnect layer, a cap layer and/or a bus line for a solid state device.
Abstract:
Capping layer or layers on a surface of a copper interconnect wiring layer for use in interconnect structures for integrated circuits and methods and apparatus for forming improved integration interconnection, structures for integrated circuits by the application of gas-cluster ion-beam processing. Reduced copper diffusion and improved electromigration lifetime result and the use of selective metal capping techniques and their attendant yield problems are avoided. Various cluster tool configurations including gas- cluster ion-bearn processing modules for copper capping, cleaning, etching, and film formation steps are disclosed.
Abstract:
A method of forming a capping layer on a copper interconnect line (14). The method comprises providing a layer (20) of Aluminium over the interconnect line (14) and the dielectric layer (10) in which it is embedded. This may be achieved by deposition or chemical exposure. The structure is then subjected to a process, such as annealing or further chemical exposure, in an environment containing, for example, Nitrogen atoms, so as to cause indiffusion of Al into the copper line (14) and nitridation to form a diffusion barrier 26 of the intermetallic compound CuAlN.