摘要:
Embodiments of the invention provide methods for depositing dielectric materials on substrates during vapor deposition processes, such as atomic layer deposition (ALD). In one example, a method includes sequentially exposing a substrate to a hafnium precursor and an oxidizing gas to deposit a hafnium oxide material thereon. In another example, a hafnium silicate material is deposited by sequentially exposing a substrate to the oxidizing gas and a process gas containing a hafnium precursor and a silicon precursor. The oxidizing gas contains water vapor formed by flowing a hydrogen source gas and an oxygen source gas through a water vapor generator.
摘要:
Embodiments of the invention provide apparatuses and methods for depositing materials on substrates during vapor deposition processes, such as atomic layer deposition (ALD) . In one embodiment, a chamber contains a chamber lid (832) containing an expanding channel (834) formed within a thermally insulating material (838) either directly within the chamber lid or formed within a funnel liner attached thereon. The chamber further includes at least one conduit (841 a-d) coupled to a gas inlet within the expanding channel and positioned to provide a gas flow in a circular direction, such as a vortex, a helix or a spiral. The chamber may contain a retaining ring (819), an upper process liner (822), a lower process liner (824) or a slip valve liner (826) . Liners usually have a polished surface finish and contain a thermally insulating material such as fused quartz or ceramic. In an alternative embodiment, a deposition system contains a catalytic water vapor generator connected to an ALD chamber.
摘要:
The present invention generally is a method for forming a high-k dielectric layer, comprising depositing a hafnium compound by atomic layer deposition to a substrate, comprising, delivering a hafnium precursor to a surface of the substrate, reacting the hafnium precursor and forming a hafnium containing layer to the surface, delivering a nitrogen precursor to the hafnium containing layer, forming at least one hafnium nitrogen bond and depositing the hafnium compound to the surface.