摘要:
A lithography method includes forming a photosensitive layer on a substrate, exposing the photosensitive layer, baking the photosensitive layer, and developing the exposed photosensitive layer. The photosensitive layer includes a polymer that turns soluble to a base solution in response to reaction with acid, a plurality of photo—acid generators (PAGs) that decompose to form acid in response to radiation energy, and a plurality of quenchers having boiling points distributed between about 200 C and about 350 C. The quenchers also have molecular weights distributed between 300 Dalton and about 20000 Dalton, and are vertically distributed in the photosensitive layer such that a first concentration C1 at a top portion of the photosensitive layer is greater than a second concentration C2 at a bottom portion of the photosensitive layer.
摘要:
A method for lithography patterning includes providing a substrate; forming a material layer over the substrate; exposing the material layer to a radiation, resulting in an exposed material layer; and removing a portion of the exposed material layer in a developer, resulting in a patterned material layer. The developer is an alkaline aqueous solution having an organic base that is a quaternary ammonium hydroxide. In an embodiment, the organic base has a bulky group in its side chain, reducing its etching distance. In another embodiment, the organic base includes electron withdrawing groups, reducing its basicity. In yet another embodiment, the developer has a loading of the quaternary ammine ranging from about 0.01% to about 2.37%. The developer results in reduced line edge roughness and reduced line width roughness in the patterned material layer.
摘要:
Disclosed is a mask for use in a lithography system having a defined resolution. The mask comprises first and second patterns that are greater than the defined resolution and a sub-resolution feature that is less than the defined resolution. Portions of the first and second patterns are positioned close to each other and separated by the sub-resolution feature in an intersection area. The size and shape of the sub-resolution feature are such that when the mask is used in the lithography system, a resulting pattern includes the first and second patterns interconnected with each other through the interconnection area.
摘要:
A system and method for anti-reflective layers is provided. In an embodiment the anti-reflective layer comprises a floating component in order to form a floating region along a top surface of the anti-reflective layer after the anti-reflective layer has dispersed. The floating component may be a floating cross-linking agent, a floating polymer resin, or a floating catalyst. The floating cross-linking agent, the floating polymer resin, or the floating catalyst may comprise a fluorine atom. The anti-reflective layers are removed using a fluid.
摘要:
A system and method for anti-reflective layers is provided. In an embodiment the anti-reflective layer comprises a floating additive in order to form a floating additive region along a top surface of the anti-reflective layer after the anti-reflective layer has dispersed. The floating additive may comprise an additive group which will decompose along with a fluorine unit bonded to the additive group which will decompose. Additionally, adhesion between the middle layer and the photoresist may be increased by applying an adhesion promotion layer using either a deposition process or phase separation, or a cross-linking may be performed between the middle layer and the photoresist.
摘要:
A method of semiconductor device fabrication including placing a substrate having a first and second features disposed thereon in a vaporizing spray deposition system. An atomizing spray head of the vaporizing spray deposition system is used to deposit a conformal polymer layer on the first and second features. The first feature having the layer of the polymer disposed thereon and having a first width. A spray trim process is performed on the first and second features having the polymer layer disposed thereon using the atomizing spray head.
摘要:
A method for fabricating a semiconductor product includes applying a photo-resist layer to a substrate, the photo-resist layer including a higher acid concentration at an upper portion of the photo-resist layer than at a lower portion of the photo-resist layer. The method also includes exposing the photo-resist layer to a light source through a mask including a feature, the photo-resist layer including a floating, diffusing acid that will diffuse into a region of the photo-resist layer affected by the feature while not diffusing into a feature formed by the mask.
摘要:
Provided is a method including providing a substrate and forming a bottom anti-reflective coating (BARC) on the substrate. The BARC includes a first portion overlying a second portion, which has a different composition than the first portion. The different composition may provide a different dissolution property of the BARC in a developer. A photoresist layer is formed on the first portion of the BARC. The photoresist layer is then irradiated and developed. The developing includes using a developer to remove a region of the photoresist layer and a region of the first and second portions of the BARC.
摘要:
A method for fabricating a semiconductor product includes applying a photo-resist layer to a substrate, the photo-resist layer including a higher acid concentration at an upper portion of the photo-resist layer than at a lower portion of the photo-resist layer. The method also includes exposing the photo-resist layer to a light source through a mask including a feature, the photo-resist layer including a floating, diffusing acid that will diffuse into a region of the photo-resist layer affected by the feature while not diffusing into a feature formed by the mask.
摘要:
A system and method for photoresists is provided. In an embodiment a cross-linking or coupling reagent is included within a photoresist composition. The cross-linking or coupling reagent will react with the polymer resin within the photoresist composition to cross-link or couple the polymers together, resulting in a polymer with a larger molecular weight. This larger molecular weight will cause the dissolution rate of the photoresist to decrease, leading to a better depth of focus for the line.