Abstract:
High-k materials and devices, e.g., DRAM capacitors, and methods of making and using the same. Various methods of forming perovskite films are described, including methods in which perovskite material is deposited on the substrate by a pulsed vapor deposition process involving contacting of the substrate with perovskite material-forming metal precursors. In one such method, the process is carried out with doping or alloying of the perovskite material with a higher mobility and/or higher volatility metal species than the metal species in the perovskite material- forming metal precursors. In another method, the perovskite material is exposed to elevated temperature for sufficient time to crystallize or to enhance crystallization of the perovskite material, followed by growth of the perovskite material under pulsed vapor deposition conditions. Various perovskite compositions are described, including: (Sr, Pb)TiO3; SrRuO3 or SrTiO3, doped with Zn, Cd or Hg; Sr(Sn,Ru)O3; and Sr(Sn,Ti)O3.
Abstract:
Strontium ruthenium oxide provides an effective interface between a ruthenium conductor and a strontium titanium oxide dielectric. Formation of the strontium ruthenium oxide includes the use of atomic layer deposition to form strontium oxide and subsequent annealing of the strontium oxide to form the strontium ruthenium oxide. A first atomic layer deposition of strontium oxide is preformed using water as an oxygen source, followed by a subsequent atomic layer deposition of strontium oxide using ozone as an oxygen source.
Abstract:
Methods of preparing metal oxide thin films by atomic layer deposition are provided. One method comprises delivering at least one precursor, or an adduct thereof, to a substrate, wherein the at least one precursor corresponds in structure to Formula I:M[(R) n pyr*]2 (Formula I) wherein: M is Sr, Ba or Ca; R is independently C 1 -C 10 -alkyl or C 1 Q 10 -alkoxy; and n is 1, 2, 3 or 4.
Abstract:
A process for producing lead containing oxide thin films by Atomic Layer Deposition, comprising using a metal-organic lead compound, having organic ligands bonded to a lead atom by carbon-lead bonds, as a source material for the lead oxide. Stoichiometric PbTiO 3 thin films with excellent uniformity can be deposited on substrates by ALD growth using, for example, Ph 4 Pb, O 3 , Ti(O i Pr) 4 and H 2 O as precursors at 250 and 300 °C.
Abstract translation:通过原子层沉积法生产含铅氧化物薄膜的方法,包括使用具有通过碳 - 铅键与铅原子结合的有机配体的金属有机铅化合物作为氧化铅的源材料。 具有优异均匀性的化学计量的PbTiO 3 N 3薄膜可以通过ALD生长沉积在基底上,例如使用Ph 4,Pb 3 O 3,Ti (O)I Pr)4和H 2 O 2作为前体在250和300℃下反应。
Abstract:
A method for preparing a ceramic which comprises forming a film in which a composite oxide material having an oxygen octahedral structure and a paraelectric material having a catalytic action towards the composite oxide material are mixedly present, and then subjecting the film to a heat treatment, wherein the paraelectric material comprises a layered catalytic substance containing Si as a constituent element or containing Si and Ge as constituent elements, and the heat treatment comprises firing and post-annealing, wherein at least the post-annealing is preferably carried out in a pressurized atmosphere containing at least one of oxygen and ozone; and a ceramic which comprises a composite oxide having an oxygen octahedral structure and containing Si and Ge in the oxygen octahedral structure.
Abstract:
The present invention provides a system and method for depositing materials onto a substrate and preferably includes physical vapor deposition (PVD) and chemical vapor deposition (CVD) processing. In one aspect, a system is provided that deposits a stack of layers on a substrate comprising one or more nucleation layers, one or more conductive layers compatible with a high-dielectric-constant (HDC) material and one or more HDC layers in various sequences. The HDC material is useful in depositing thin metal-oxide films and ferroelectric films, as well as other films requiring vaporization of precursor liquids. The system allows PVD and CVD to occur within a centralized system to avoid contamination and reduce processing time. Further, different CVD layers can be deposited within the same CVD chamber. In one embodiment, multiple sets of vaporized gas passages and other gas passages can be formed through a gas manifold to allow mixing of multiple precursors near the endpoint of the flow path for control of the mixing regimes. The layer can be annealed to promote better adhesion and surface texture between adjoining layers.