摘要:
A semiconductor device having a nonconductive cap layer comprising a first metal element. The nonconductive cap layer comprises a first metal nitride, a first metal oxide, or a first metal oxynitride over conductive lines and an insulating material between the conductive lines. An interface region may be formed over the top surface of the conductive lines, the interface region including the metal element of the cap layer. The cap layer prevents the conductive material in the conductive lines from migrating or diffusing into adjacent subsequently formed insulating material layers. The cap layer may also function as an etch stop layer.
摘要:
A method for forming a barrier layer upon a copper containing conductor layer employs a hydrogen containing plasma treatment of the copper containing conductor layer followed by an argon plasma treatment of the copper containing conductor layer. The barrier layer may be formed employing a chemical vapor deposition method, such as an atomic layer deposition method. When the deposition method employs a metal and carbon containing source material, the two-step plasma pretreatment provides the barrier layer with enhanced electrical properties.
摘要:
A method for forming a barrier layer upon a copper containing conductor layer employs a hydrogen containing plasma treatment of the copper containing conductor layer followed by an argon plasma treatment of the copper containing conductor layer. The barrier layer may be formed employing a chemical vapor deposition method, such as an atomic layer deposition method. When the deposition method employs a metal and carbon containing source material, the two-step plasma pretreatment provides the barrier layer with enhanced electrical properties.
摘要:
A method of reducing the sheet resistivity of an ALD-TaN layer in an interconnect structure. The ALD-TaN layer is treated with a plasma treatment, such as Argon or Tantalum plasma treatment, to increase the Ta/N ratio of the ALD-TaN barrier layer, thereby reducing the sheet resistivity of the ALD-TaN layer.
摘要:
A reactive pre-clean chamber that contains a wafer heating apparatus, such as a high-temperature electrostatic chuck (HTESC), for directly heating a wafer supported on the apparatus during a pre-cleaning process. The wafer heating apparatus is capable of heating the wafer to the optimum temperatures required for a hydrogen plasma reactive pre-clean (RPC) process. Furthermore, degassing and pre-cleaning can be carried out in the same pre-clean chamber. The invention further includes a method of pre-cleaning a wafer using a pre-clean chamber that contains a wafer heating apparatus.
摘要:
A semiconductor device having a nonconductive cap layer comprising a first metal element. The nonconductive cap layer comprises a first metal nitride, a first metal oxide, or a first metal oxynitride over conductive lines and an insulating material between the conductive lines. An interface region may be formed over the top surface of the conductive lines, the interface region including the metal element of the cap layer. The cap layer prevents the conductive material in the conductive lines from migrating or diffusing into adjacent subsequently formed insulating material layers. The cap layer may also function as an etch stop layer.
摘要:
A new method and structure is provided for the creation of a copper dual damascene interconnect. A dual damascene structure is created in the layer of dielectric, optionally a metal barrier layer is deposited over exposed surfaces of the dual damascene structure. A copper seed layer is deposited, the dual damascene structure is filled with copper. An anneal is applied to the created copper interconnect after which excess copper is removed from the dielectric. Of critical importance to the invention, a thin layer of oxide is then deposited as a cap layer over the copper dual damascene interconnect, an etch stop layer is then deposited over the thin layer of oxide for continued upper-level metallization.
摘要:
A novel process for re-distributing a barrier layer deposited on a single damascene, dual damascene or other contact opening structure. The process includes providing a substrate having a contact opening structure and a metal barrier layer deposited in the contact opening structure, re-sputtering the barrier layer by bombarding the barrier layer with argon ions and metal ions, and re-sputtering the barrier layer by bombarding the barrier layer with argon ions.
摘要:
A method for forming a copper damascene feature including providing a semiconductor process wafer including at least one via opening formed to extend through a thickness of at least one dielectric insulating layer and an overlying trench line opening encompassing the at least one via opening to form a dual damascene opening; etching through an etch stop layer at the at least one via opening bottom portion to expose an underlying copper area; carrying out a sub-atmospheric DEGAS process with simultaneous heating of the process wafer in a hydrogen containing ambient; carrying out an in-situ sputter-clean process; and, forming a barrier layer in-situ to line the dual damascene opening.