摘要:
A new technique is disclosed in which a barrier/cap layer for a copper based metal line is formed by using a thermal-chemical treatment based on hydrogen with a surface modification on the basis of a silicon-containing precursor followed by an in situ plasma based deposition of silicon based dielectric barrier material. The thermal-chemical cleaning process is performed in the absence of any plasma ambient.
摘要:
A new technique is disclosed in which a barrier/cap layer for a copper based metal line is formed by using a thermal-chemical treatment based on hydrogen with a surface modification on the basis of a silicon-containing precursor followed by an in situ plasma based deposition of silicon based dielectric barrier material. The thermal-chemical cleaning process is performed in the absence of any plasma ambient.
摘要:
A new technique is disclosed in which a barrier/capping layer for a copper-based metal line is formed by using a thermal-chemical treatment with a surface modification on the basis of a silicon-containing precursor followed by an in situ plasma-based deposition of silicon nitride and/or silicon carbon nitride. The thermal-chemical treatment is performed on the basis of an ammonium/nitrogen mixture in the absence of any plasma ambient.
摘要:
A new technique is disclosed in which a barrier/capping layer for a copper-based metal line is formed by using a thermal-chemical treatment with a surface modification on the basis of a silicon-containing precursor followed by an in situ plasma-based deposition of silicon nitride and/or silicon carbon nitride. The thermal-chemical treatment is performed on the basis of an ammonium/nitrogen mixture in the absence of any plasma ambient.
摘要:
A new technique is disclosed in which a barrier/capping layer for a copper-based metal line is formed by using a thermal-chemical treatment followed by an in situ plasma-based deposition of silicon nitride and/or silicon carbon nitride. The thermal-chemical treatment is performed on the basis of an ammonium/nitrogen mixture in the absence of any plasma ambient.
摘要:
By providing a barrier layer stack including a silicon nitride layer for confining a copper-based metal region, thereby also effectively avoiding any diffusion of oxygen and moisture into the copper region, and a nitrogen-enriched silicon carbide layer, the total relative permittivity may be maintained at a low level, since the thickness of the silicon nitride layer may be moderately thin, while the relatively thick silicon carbide nitride layer provides the required high etch selectivity during a subsequent patterning process of the low-k dielectric layer.
摘要:
By providing a barrier layer stack including a thin SiCN layer for enhanced adhesion, a silicon nitride layer for confining a copper-based metal region (thereby also effectively avoiding any diffusion of oxygen and moisture into the copper region), and a SiCN layer, the total relative permittivity may still be maintained at a low level, since the thickness of the first SiCN layer and of the silicon nitride layer may be moderately thin, while the relatively thick silicon carbide nitride layer provides the required high etch selectivity during a subsequent patterning process of the low-k dielectric layer.
摘要:
By providing a barrier layer stack including a silicon nitride layer for confining a copper-based metal region, thereby also effectively avoiding any diffusion of oxygen and moisture into the copper region, and a nitrogen-enriched silicon carbide layer, the total relative permittivity may be maintained at a low level, since the thickness of the silicon nitride layer may be moderately thin, while the relatively thick silicon carbide nitride layer provides the required high etch selectivity during a subsequent patterning process of the low-k dielectric layer.
摘要:
By forming a compressively stressed silicon nitride material on the basis of a mixed frequency plasma-enhanced chemical vapor deposition (PECVD) process, a higher compressive stress may be achieved at a reduced defect rate compared to conventional single frequency processes. Consequently, a more efficient strain-inducing mechanism for P-channel transistors and a corresponding increase of performance may be accomplished.
摘要:
By providing a barrier layer stack including a thin SiCN layer for enhanced adhesion, a silicon nitride layer for confining a copper-based metal region (thereby also effectively avoiding any diffusion of oxygen and moisture into the copper region), and a SiCN layer, the total relative permittivity may still be maintained at a low level, since the thickness of the first SiCN layer and of the silicon nitride layer may be moderately thin, while the relatively thick silicon carbide nitride layer provides the required high etch selectivity during a subsequent patterning process of the low-k dielectric layer.