Abstract:
A method of forming a high-k dielectric material including forming at least two portions of titanium dioxide, the at least two portions of titanium dioxide comprising a first portion comprising amorphous titanium dioxide and a second portion comprising rutile titanium dioxide. A method of forming a high-k dielectric material including forming a first portion of titanium dioxide at a temperature of from about 150° C. to about 350° C. and forming a second portion of titanium dioxide at a temperature of from about 350° C. to about 600° C. A high-k dielectric material is also disclosed.
Abstract:
A method of forming a high-k dielectric material including forming at least two portions of titanium dioxide, the at least two portions of titanium dioxide comprising a first portion comprising amorphous titanium dioxide and a second portion comprising rutile titanium dioxide. A method of forming a high-k dielectric material including forming a first portion of titanium dioxide at a temperature of from about 150° C. to about 350° C. and forming a second portion of titanium dioxide at a temperature of from about 350° C. to about 600° C. A high-k dielectric material is also disclosed.
Abstract:
A method of retaining the integrity of a photoresist pattern is provided where the patterned photoresist is treated prior to etching the principle layer. The pre-etch treatment encompasses a plasma treatment. In some embodiments employing an anti-reflective coating (ARC) layer, an isolation/protective layer is used to isolate the ARC from the photoresist. In some embodiments, the pre-etch treatment, advantageously provides for patterning the isolation/protection layer.
Abstract:
A recess is usually formed on the sidewall of the trench due to the dry etch. The recess may influence the profile of an element formed in the trench. Therefore, a method of flattening a recess in a substrate is provided. The method includes: first, providing a substrate having a trench therein, wherein the trench has a sidewall comprising a recessed section and an unrecessed section. Then, a recessed section oxidation rate change step is performed to change an oxidation rate of the recessed section. Later, an oxidizing process is performed to the substrate so as to form a first oxide layer on the recessed section, and a second oxide layer on the unrecessed section, wherein the second oxide layer is thicker than the first oxide layer. Finally, the first oxide layer and the second oxide layer are removed to form a flattened sidewall of the trench.
Abstract:
A recess is usually formed on the sidewall of the trench due to the dry etch. The recess may influence the profile of an element formed in the trench. Therefore, a method of flattening a recess in a substrate is provided. The method includes: first, providing a substrate having a trench therein, wherein the trench has a sidewall comprising a recessed section and an unrecessed section. Then, a recessed section oxidation rate change step is performed to change an oxidation rate of the recessed section. Later, an oxidizing process is performed to the substrate so as to form a first oxide layer on the recessed section, and a second oxide layer on the unrecessed section, wherein the second oxide layer is thicker than the first oxide layer. Finally, the first oxide layer and the second oxide layer are removed to form a flattened sidewall of the trench.