Abstract:
Method, system and apparatus for forming one or more metal oxide layers on a substrate is disclosed. An example method comprises a) providing a substrate in a reaction chamber, b) flowing a first precursor comprising zinc or gallium or a combination thereof and an oxygen species into the chamber to deposit a first oxide layer on a top surface of the substrate, c) flowing a second precursor into the chamber to deposit a second oxide layer on the first oxide layer wherein the second precursor comprises aluminum having at least one R ligand and at least one L ligand, wherein the R ligand is an alkyl ligand and wherein the R ligand and the L ligand are different and repeating steps b) or c) or a combination thereof until a desired thickness of the first oxide layer or the second oxide layer, or a combination thereof is achieved.
Abstract:
A method for depositing an oxide film on a substrate by a cyclical deposition is disclosed. The method may include: depositing a metal oxide film over the substrate utilizing at least one deposition cycle of a first sub-cycle of the cyclical deposition process; and depositing a silicon oxide film directly on the metal oxide film utilizing at least one deposition cycle of a second sub-cycle of the cyclical deposition process. Semiconductor device structures including an oxide film deposited by the methods of the disclosure are also disclosed.
Abstract:
Methods for forming a metal silicate film on a substrate in a reaction chamber by a cyclical deposition process are provided. The methods may include: regulating the temperature of a hydrogen peroxide precursor below a temperature of 70° C. prior to introduction into the reaction chamber, and depositing the metal silicate film on the substrate by performing at least one unit deposition cycle of a cyclical deposition process. Semiconductor device structures including a metal silicate film formed by the methods of the disclosure are also provided.
Abstract:
In some aspects, methods of forming a metal sulfide thin film are provided. According to some methods, a metal sulfide thin film is deposited on a substrate in a reaction space in a cyclical process where at least one cycle includes alternately and sequentially contacting the substrate with a first vapor-phase metal reactant and a second vapor-phase sulfur reactant. In some aspects, methods of forming a three-dimensional architecture on a substrate surface are provided. In some embodiments, the method includes forming a metal sulfide thin film on the substrate surface and forming a capping layer over the metal sulfide thin film. The substrate surface may comprise a high-mobility channel.
Abstract:
A method for forming layers suitable for a V-NAND stack is disclosed. Specifically, the method may include multiple cycles for forming an oxide and a nitride in order to form an oxynitride layer.
Abstract:
In some aspects, methods of forming a metal sulfide thin film are provided. According to some methods, a metal sulfide thin film is deposited on a substrate in a reaction space in a cyclical process where at least one cycle includes alternately and sequentially contacting the substrate with a first vapor-phase metal reactant and a second vapor-phase sulfur reactant. In some aspects, methods of forming a three-dimensional architecture on a substrate surface are provided. In some embodiments, the method includes forming a metal sulfide thin film on the substrate surface and forming a capping layer over the metal sulfide thin film. The substrate surface may comprise a high-mobility channel.
Abstract:
In some embodiments, a semiconductor surface having a high mobility semiconductor may be effectively passivated by nitridation, preferably using hydrazine, a hydrazine derivative, or a combination thereof. The surface may be the semiconductor surface of a transistor channel region. In some embodiments, a semiconductor surface oxide layer is formed at the semiconductor surface and the passivation is accomplished by forming a semiconductor oxynitride layer at the surface, with the nitridation contributing nitrogen to the surface oxide to form the oxynitride layer. The semiconductor oxide layer may be deposited by atomic layer deposition (ALD) and the nitridation may also be conducted as part of the ALD.
Abstract:
In some embodiments, a semiconductor surface may be effectively passivated by nitridation, preferably using hydrazine, a hydrazine derivative, or a combination thereof. The surface may be the semiconductor surface of a transistor channel region. In some embodiments, native oxide is removed from the semiconductor surface and the surface is subsequently nitrided. In some other embodiments, a semiconductor surface oxide layer is formed at the semiconductor surface and the passivation is accomplished by forming a semiconductor oxynitride layer at the surface, with the nitridation contributing nitrogen to the surface oxide to form the oxynitride layer. The semiconductor oxide layer may be deposited by atomic layer deposition (ALD) and the nitridation may also be conducted as part of the ALD.
Abstract:
In some embodiments, an MIS-type contact structure is formed by passivating the semiconductor surface of a source/drain region with a chalcogen, and subsequently depositing an tunnel layer by first exposing the chalcogen-passivated surface to a metal-organic precursor. Subsequently, deposition of the tunnel layer continues to a desired thickness. Preferably, the metal-organic precursor is part of a first set of ALD precursors and a second set of ALD precursors, which include one or more metal or semimetal precursors, are subsequently used to continue the deposition. For example, the metal-organic precursor may be used to deposit a first portion of the tunnel layer, and an inorganic metal or inorganic semimetal precursor or a different organic metal or organic semimetal precursor may be used to deposit a second portion of the tunnel layer. A metal is subsequently deposited on the tunnel layer, e.g., to form a metal electrode or electrical contact.
Abstract:
In some aspects, methods of forming a metal sulfide thin film are provided. According to some methods, a metal sulfide thin film is deposited on a substrate in a reaction space in a cyclical process where at least one cycle includes alternately and sequentially contacting the substrate with a first vapor-phase metal reactant and a second vapor-phase sulfur reactant. In some aspects, methods of forming a three-dimensional architecture on a substrate surface are provided. In some embodiments, the method includes forming a metal sulfide thin film on the substrate surface and forming a capping layer over the metal sulfide thin film. The substrate surface may comprise a high-mobility channel.