Abstract:
Buffer layer and method of forming the buffer layer, the method including forming a high-k dielectric layer, forming a titanium nitride layer over the high-k dielectric layer, forming a silicon layer on the titanium nitride layer, annealing the silicon layer into the titanium nitride layer to form an annealed silicon layer and forming an n-metal over the high-k dielectric layer.
Abstract:
An integrated circuit fabrication is disclosed, and more particularly a field effect transistor with a low resistance metal gate electrode is disclosed. An exemplary structure for a metal gate electrode of a field effect transistor comprises a lower portion formed of a first metal material, wherein the lower portion has a recess, a bottom portion and sidewall portions, wherein each of the sidewall portions has a first width; and an upper portion formed of a second metal material, wherein the upper portion has a protrusion and a bulk portion, wherein the bulk portion has a second width, wherein the protrusion extends into the recess, wherein a ratio of the second width to the first width is from about 5 to 10.
Abstract:
The present disclosure provides a method of fabricating a semiconductor device. The method includes providing a substrate, forming an interfacial layer on the substrate by treating the substrate with radicals, and forming a high-k dielectric layer on the interfacial layer. The radicals are selected from the group consisting of hydrous radicals, nitrogen/hydrogen radicals, and sulfur/hydrogen radicals.
Abstract:
A method for fabricating the gate dielectric layer comprises forming a high-k dielectric layer over a substrate; forming an oxygen-containing layer on the high-k dielectric layer by an atomic layer deposition process; and performing an inert plasma treatment on the oxygen-containing layer.
Abstract:
An integrated circuit fabrication is disclosed, and more particularly a field effect transistor with a low resistance metal gate electrode is disclosed. An exemplary structure for a metal gate electrode of a field effect transistor comprises a lower portion formed of a first metal material, wherein the lower portion has a recess, a bottom portion and sidewall portions, wherein each of the sidewall portions has a first width; and an upper portion formed of a second metal material, wherein the upper portion has a protrusion and a bulk portion, wherein the bulk portion has a second width, wherein the protrusion extends into the recess, wherein a ratio of the second width to the first width is from about 5 to 10.
Abstract:
The present disclosure provides a method of fabricating a semiconductor device. The method includes providing a substrate, forming an interfacial layer on the substrate by treating the substrate with radicals, and forming a high-k dielectric layer on the interfacial layer. The radicals are selected from the group consisting of hydrous radicals, nitrogen/hydrogen radicals, and sulfur/hydrogen radicals.
Abstract:
Buffer layer and method of forming the buffer layer, the method including forming a high-k dielectric layer, forming a titanium nitride layer over the high-k dielectric layer, forming a silicon layer on the titanium nitride layer, annealing the silicon layer into the titanium nitride layer to form an annealed silicon layer and forming an n-metal over the high-k dielectric layer.
Abstract:
A method for fabricating the gate dielectric layer comprises forming a high-k dielectric layer over a substrate; forming an oxygen-containing layer on the high-k dielectric layer by an atomic layer deposition process; and performing an inert plasma treatment on the oxygen-containing layer.
Abstract:
A method for making a metal oxide layer includes: (a) exposing a substrate having oxygen-containing reaction sites to an environment of a first precursor of an organometallic compound, which contains a metal atom and ligand groups, so as to form a chemisorption layer of the first precursor on the substrate; (b) exposing the chemisorption layer on the substrate to a non-free radical environment of a second precursor after step (a) so as to remove the ligand groups of the chemisorption layer that are unreacted in step (a) and so as to convert the chemisorption layer into a metal oxide layer; and (c) after step (b), exposing the metal oxide layer on the substrate to a free radical-containing gas containing free radicals so as to remove the ligand groups of the chemisorption layer that are left unreacted in step (b).