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    • 5. 发明授权
    • Surface treatment for selective metal cap applications
    • 选择性金属帽应用的表面处理
    • US07830010B2
    • 2010-11-09
    • US12062130
    • 2008-04-03
    • Chih-Chao YangSatya V. NittaSampath PurushothamanMuthumanickam Sankarapandian
    • Chih-Chao YangSatya V. NittaSampath PurushothamanMuthumanickam Sankarapandian
    • H01L23/48
    • H01L23/53238H01L21/76826H01L21/76829H01L21/76835H01L21/76849H01L21/76885H01L23/5329H01L2924/0002H01L2924/00
    • Interconnect structures in which a noble metal-containing cap layer is present directly on a non-recessed surface of a conductive material which is embedded within a low k dielectric material are provided. It has been determined that by forming a hydrophobic surface on a low k dielectric material prior to metal cap formation provides a means for controlling the selective formation of the metal cap directly on the non-recessed surface of a conductive material. That is, the selective formation of the metal cap directly on the non-recessed surface of a conductive material is enhanced since the formation rate of the metal cap on the non-recessed surface of a conductive material is greater than on the hydrophobic surface of the low k dielectric material. It is observed that the hydrophobic surface may be a result of treating a damaged surface of the dielectric material with a silylating agent prior to the selective formation of the noble metal cap or, as a result of forming a hydrophobic polymeric layer on the surface of the dielectric material prior to the selective deposition of the noble metal cap. The hydrophobic polymeric layer typically includes atoms of Si, C and O.
    • 提供了其中含有贵金属的覆盖层直接存在于嵌入低k电介质材料的导电材料的非凹陷表面上的互连结构。 已经确定,在金属盖形成之前通过在低k电介质材料上形成疏水表面提供了一种用于直接控制在导电材料的非凹入表面上选择性形成金属帽的手段。 也就是说,直接在导电材料的非凹入表面上选择性地形成金属帽,因为金属帽在导电材料的非凹陷表面上的形成速率大于导电材料的疏水表面上的形成速率 低k电介质材料。 观察到,疏水性表面可以是在选择性形成贵金属盖之前用甲硅烷基化剂处理电介质材料的损坏表面的结果,或者由于在表面上形成疏水性聚合物层 在贵金属盖的选择​​性沉积之前的介电材料。 疏水性聚合物层通常包括Si,C和O的原子。
    • 6. 发明申请
    • SURFACE TREATMENT FOR SELECTIVE METAL CAP APPLICATIONS
    • 选择性金属盖应用的表面处理
    • US20090250815A1
    • 2009-10-08
    • US12062130
    • 2008-04-03
    • CHIH-CHAO YANGSatya V. NittaSampath PurushothamanMuthumanickam Sankarapandian
    • CHIH-CHAO YANGSatya V. NittaSampath PurushothamanMuthumanickam Sankarapandian
    • H01L23/532H01L21/768
    • H01L23/53238H01L21/76826H01L21/76829H01L21/76835H01L21/76849H01L21/76885H01L23/5329H01L2924/0002H01L2924/00
    • Interconnect structures in which a noble metal-containing cap layer is present directly on a non-recessed surface of a conductive material which is embedded within a low k dielectric material are provided. It has been determined that by forming a hydrophobic surface on a low k dielectric material prior to metal cap formation provides a means for controlling the selective formation of the metal cap directly on the non-recessed surface of a conductive material. That is, the selective formation of the metal cap directly on the non-recessed surface of a conductive material is enhanced since the formation rate of the metal cap on the non-recessed surface of a conductive material is greater than on the hydrophobic surface of the low k dielectric material. It is observed that the hydrophobic surface may be a result of treating a damaged surface of the dielectric material with a silylating agent prior to the selective formation of the noble metal cap or, as a result of forming a hydrophobic polymeric layer on the surface of the dielectric material prior to the selective deposition of the noble metal cap. The hydrophobic polymeric layer typically includes atoms of Si, C and O.
    • 提供了其中含有贵金属的覆盖层直接存在于嵌入低k电介质材料的导电材料的非凹陷表面上的互连结构。 已经确定,在金属盖形成之前通过在低k电介质材料上形成疏水表面提供了一种用于直接控制在导电材料的非凹入表面上选择性形成金属帽的手段。 也就是说,直接在导电材料的非凹入表面上选择性地形成金属帽,因为金属帽在导电材料的非凹陷表面上的形成速率大于导电材料的疏水表面上的形成速率 低k电介质材料。 观察到,疏水性表面可以是在选择性形成贵金属盖之前用甲硅烷基化剂处理电介质材料的损坏表面的结果,或者由于在表面上形成疏水性聚合物层 在贵金属盖的选择​​性沉积之前的介电材料。 疏水性聚合物层通常包括Si,C和O的原子。