Methods are provided for dual selective deposition of a first material on a first surface of a substrate and a second material on a second, different surface of the same substrate. The selectively deposited materials may be, for example, metal, metal oxide, or dielectric materials.

Provided herein are methods and apparatus for deposition of pure metal films. The methods involve the use of oxygen-containing precursors. The metals include molybdenum (Mo) and tungsten (W). To deposit pure films with no more than one atomic percentage oxygen, the reducing agent to metal precursor ratio is significantly greater than 1. Molar ratios of 100:1 to 10000:1 may be used in some embodiments.

A method of forming an electrode in accordance with an exemplary embodiment includes a process of forming a mask pattern on one surface of a base to expose a partial area of the one surface of the base by using a mask material that is polymer including an end tail having at least one bonding structure of covalent bond and double bond, a process of loading the base on which the mask pattern is formed into a chamber, and a process of forming a conductive layer containing copper on the exposed one surface of the base by using an atomic layer deposition method that alternately injects a source material containing copper and a reactive material that reacts with the source material into the chamber.

Thus, according to the method of forming an electrode in accordance with an exemplary embodiment, a thin-film caused by a material for forming an electrode is not formed on a surface of the mask pattern. Therefore, a residue is not remained when the mask pattern is removed to prevent a defect caused by the residue from being generated.

A film deposition method includes preparing a substrate having an insulating film formed thereon, forming a seed layer on the insulating film, and supplying a molybdenum-containing gas and a reducing gas to the substrate having the seed layer famed thereon, to foam a molybdenum film on the seed layer.

A deposition method includes preparing a substrate having an insulating film formed thereon, forming a first molybdenum film on the insulating film by supplying a molybdenum-containing gas and a reducing gas to the substrate while the substrate is heated to a first temperature, and forming a second molybdenum film on the first molybdenum film by supplying the molybdenum-containing gas and the reducing gas to the substrate while the substrate is heated to a second temperature that is higher than the first temperature.

Methods for filling a substrate feature with a seamless dielectric gap fill are described. Methods comprise sequentially depositing a film with a seam and partially etching the film in the same processing chamber. Methods and apparatus allow for the same hardware to be used for PEALD deposition of a film as well as plasma etch of the film.

Methods for filling a substrate feature with a seamless metal gate fill are described. Methods comprise sequentially depositing a film on a substrate surface having at least one feature thereon. The at least one feature extends a feature depth from the substrate surface to a bottom surface and has a width defined by a first sidewall and a second sidewall. The film is treated with an oxidizing plasma. Then the film is etched to remove the oxidized film. A second film is deposited to fill the feature, where the second film substantially free of seams and voids.

The current disclosure relates to deposition of a transition metal chalcogenide barrier layer. The method of depositing a transition metal chalcogenide barrier layer comprises providing a substrate having an opening into a reaction chamber, providing a transition metal precursor in the reaction chamber in vapor phase and providing an reactive chalcogen species in the reaction chamber. The method may be a plasma-enhanced atomic layer deposition method. The disclosure further relates to an interconnect comprising a transition metal chalcogenide barrier layer.

A method of forming a contact trench structure in a semiconductor device, the method includes performing a first selective deposition process to form a contact on sidewalls of a trench, each of the sidewalls of the trench comprising a first cross section of a first material and a second cross section of a second material, performing a second selective deposition process to form a metal silicide layer on the contact, performing a first metal fill process to form a contact plug within the trench, the first metal fill process including depositing a contact plug metal material within the trench, performing an etch process to form an opening within the trench, comprising partially etching the contact plug metal material within the trench, and performing a second metal fill process, the second metal fill process comprising depositing the contact plug metal material within the opening.

A method for manufacturing a semiconductor device including a TiN film. The method comprises: supplying TiCl.sub.4 gas to a substrate; purging the TiCl.sub.4 gas; supplying NH.sub.3 gas to the substrate; purging the NH.sub.3 gas; and supplying an inhibitor that inhibits adsorption of TiCl.sub.4 or NH.sub.3 to the substrate. A plurality of cycles each including the supplying the TiCl.sub.4 gas, the purging the TiCl.sub.4 gas, the supplying the NH.sub.3 gas, and the purging the NH.sub.3 gas are performed, at least a part of the plurality of cycles includes the supplying the inhibitor, and after the supplying the inhibitor is performed, the supplying the TiCl.sub.4 gas or the supplying the NH.sub.3 gas is performed without purging the inhibitor, or, after purging the inhibitor for a shorter time than the purging the TiCl.sub.4 gas or the purging the NH.sub.3 gas, the supplying the TiCl.sub.4 gas or the supplying the NH.sub.3 gas is performed.