摘要:
A method and apparatus for forming a nitrided gate dielectric. The method comprises incorporating nitrogen into a dielectric film using a plasma nitridation process to form a nitrided gate dielectric. The first step involves providing a substrate comprising a gate dielectric film. The second step involves inducing a voltage on the substrate. Finally, the substrate is exposed to a plasma comprising a nitrogen source while maintaining the voltage to form a nitrided gate dielectric on the substrate. In one embodiment, the voltage is induced on the substrate by applying a voltage to an electrostatic chuck supporting the substrate. In another embodiment, the voltage is induced on the substrate by applying a DC bias voltage to an electrode positioned adjacent the substrate.
摘要:
In one embodiment, a method for forming a morphologically stable dielectric material is provided which includes exposing a substrate to a hafnium precursor, a silicon precursor and an oxidizing gas to form hafnium silicate material during a chemical vapor deposition (CVD) process and subsequently and optionally exposing the substrate to a post deposition anneal, a nitridation process and a thermal annealing process. In some examples, the hafnium and silicon precursors used during a metal-organic CVD (MOCVD) process are alkylamino compounds, such as tetrakis(diethylamino)hafnium (TDEAH) and tris(dimethylamino)silane (Tris-DMAS). In another embodiment, other metal precursors may be used to form a variety of metal silicates containing tantalum, titanium, aluminum, zirconium, lanthanum or combinations thereof.
摘要:
In one embodiment, a method for forming a dielectric material is provided which includes exposing a substrate sequentially to a metal-containing precursor and an oxidizing gas to form metal oxide (e.g., HfOx) during an ALD process and subsequently exposing the substrate to an inert plasma process and a thermal annealing process. Generally, the metal oxide contains hafnium, tantalum, titanium, aluminum, zirconium, lanthanum or combinations thereof. In one example, the inert plasma process contains argon and is free of nitrogen, while the thermal annealing process contains oxygen. In another example, an ALD process to form a metal oxide includes exposing the substrate sequentially to a metal precursor and an oxidizing gas containing water vapor formed by a catalytic water vapor generator. In an alternative embodiment, a method for forming a dielectric material is provide which includes exposing a substrate to a deposition process to form a metal oxide layer and subsequently exposing the substrate to a nitridation plasma process and a thermal annealing process to form metal oxynitride (e.g., HfOxNy).
摘要翻译:在一个实施例中,提供了一种用于形成介电材料的方法,其包括在ALD过程期间将衬底依次暴露于含金属的前体和氧化气体以形成金属氧化物(例如,HfO x x x) 随后将衬底暴露于惰性等离子体工艺和热退火工艺中。 通常,金属氧化物含有铪,钽,钛,铝,锆,镧或其组合。 在一个实例中,惰性等离子体工艺包含氩并且不含氮,而热退火工艺含有氧。 在另一个实例中,形成金属氧化物的ALD工艺包括将基板顺序地暴露于金属前体和含有由催化水蒸汽发生器形成的水蒸汽的氧化气体。 在替代实施例中,提供了形成电介质材料的方法,其包括将衬底暴露于沉积工艺以形成金属氧化物层,并随后将衬底暴露于氮化等离子体工艺和热退火工艺以形成金属氮氧化物(例如 ,HfO x N N y)。
摘要:
Methods for forming dielectric materials on a substrate in a single cluster tool are provided. In one embodiment, the method includes providing a cluster tool having a plurality of deposition chambers, depositing a metal-containing oxide layer on a substrate in a first chamber of the cluster tool, treating the metal-containing oxide layer with an insert plasma process in a second chamber of the cluster tool, annealing the metal-containing oxide layer in a third chamber of the cluster tool, and depositing a gate electrode layer on the annealed substrate in a fourth chamber of the cluster tool.
摘要:
In one embodiment, a method for forming a dielectric stack on a substrate is provided which includes depositing a first layer of a dielectric material on a substrate surface, exposing the first layer to a nitridation process, depositing a second layer of the dielectric material on the first layer, exposing the second layer to the nitridation process, and exposing the substrate to an anneal process. In another embodiment, a method for forming a dielectric material on a substrate is provided which includes depositing a metal oxide layer substantially free of silicon on a substrate surface, exposing the metal oxide layer to a nitridation process, and exposing the substrate to an anneal process.
摘要:
The embodiments of the invention describe a process chamber, such as an ALD chamber, that has gas delivery conduits with gradually increasing diameters to reduce Joule-Thompson effect during gas delivery, a ring-shaped gas liner leveled with the substrate support to sustain gas temperature and to reduce gas flow to the substrate support backside, and a gas reservoir to allow controlled delivery of process gas. The gas conduits with gradually increasing diameters, the ring-shaped gas liner, and the gas reservoir help keep the gas temperature stable and reduce the creation of particles.
摘要:
The embodiments of the invention describe a process chamber, such as an ALD chamber, that has gas delivery conduits with gradually increasing diameters to reduce Joule-Thompson effect during gas delivery, a ring-shaped gas liner leveled with the substrate support to sustain gas temperature and to reduce gas flow to the substrate support backside, and a gas reservoir to allow controlled delivery of process gas. The gas conduits with gradually increasing diameters, the ring-shaped gas liner, and the gas reservoir help keep the gas temperature stable and reduce the creation of particles.
摘要:
In one embodiment, a method for forming a dielectric stack on a substrate is provided which includes depositing a first layer of a dielectric material on a substrate surface, exposing the first layer to a nitridation process, depositing a second layer of the dielectric material on the first layer, exposing the second layer to the nitridation process, and exposing the substrate to an anneal process. In another embodiment, a method for forming a dielectric material on a substrate is provided which includes depositing a metal oxide layer substantially free of silicon on a substrate surface, exposing the metal oxide layer to a nitridation process, and exposing the substrate to an anneal process.