摘要:
A feature in a layer is provided. A photoresist layer is formed over the layer. The photoresist layer is patterned to form photoresist features with photoresist sidewalls, where the photoresist features have a first critical dimension. A conformal layer is deposited over the sidewalls of the photoresist features to reduce the critical dimensions of the photoresist features. Features are etched into the layer, wherein the layer features have a second critical dimension, which is less than the first critical dimension.
摘要:
A feature in a layer is provided. A photoresist layer is formed over the layer. The photoresist layer is patterned to form photoresist features with photoresist sidewalls, where the photoresist features have a first critical dimension. A conformal layer is deposited over the sidewalls of the photoresist features to reduce the critical dimensions of the photoresist features. Features are etched into the layer, wherein the layer features have a second critical dimension, which is less than the first critical dimension.
摘要:
A method for forming damascene features in a dielectric layer over a barrier layer over a substrate is provided. A plurality of vias are etched in the dielectric layer to the barrier layer with a plasma etching process in the plasma processing chamber. A patterned photoresist layer is formed with a trench pattern. Within a single plasma process chamber a combination via plug deposition to form plugs in the vias over the barrier layer and trench etch is provided.
摘要:
A method for creating semiconductor devices by etching a layer over a wafer is provided. A photoresist layer is provided on a wafer. The photoresist layer is patterned. The wafer is placed in a process chamber. The photoresist is hardened by providing a hardening plasma containing high energy electrons in the process chamber to harden the photoresist layer, wherein the high energy electrons have a density. The layer is etched within the process chamber with an etching plasma, where a density of high energy electrons in the etching plasma is less than the density of high energy electrons in the hardening plasma.
摘要:
A method for creating semiconductor devices by etching a layer over a wafer is provided. A photoresist layer is provided on a wafer. The photoresist layer is patterned. The wafer is placed in a process chamber. The photoresist is hardened by providing a hardening plasma containing high energy electrons in the process chamber to harden the photoresist layer, wherein the high energy electrons have a density. The layer is etched within the process chamber with an etching plasma, where a density of high energy electrons in the etching plasma is less than the density of high energy electrons in the hardening plasma.
摘要:
A method for etching features in an etch layer is provided. A patterned photoresist mask is formed over the etch layer with photoresist features with sidewalls wherein the sidewalls of the photoresist features have irregular profiles along depths of the photoresist features. The irregular profiles along the depths of the photoresist features of the sidewalls of the photoresist features are corrected comprising at least one cycle, where each cycle comprises a sidewall deposition phase and a profile shaping phase. Feature is etched into the etch layer through the photoresist features. The mask is removed.
摘要:
A method for etching a feature in an etch layer is provided. A patterned photoresist mask is formed over the etch layer with photoresist features with sidewalls wherein the sidewalls of the photoresist features have striations forming peaks and valleys. The striations of the sidewalls of the photoresist features are reduced. The reducing the striations comprises at least one cycle, wherein each cycle comprises etching back peaks formed by the striations of the sidewalls of the photoresist features and depositing on the sidewalls of the photoresist features. Features are etched into the etch layer through the photoresist features. The photoresist mask is removed.
摘要:
A method for forming a feature in a layer with reduced line edge roughening is provided. A photoresist layer is formed over the layer. The photoresist layer is patterned to form photoresist features with photoresist sidewalls. A sidewall layer with a thickness less than 100 nm is formed over the sidewalls of the photoresist features by performing for a plurality of cycles. Each cycle comprises depositing a layer on the photoresist layer wherein the deposited layer has a thickness between a monolayer to 20 nm. Features are etched into the layer through the photoresist features. The photoresist layer and sidewall layer are stripped.
摘要:
A method for etching a feature in an etch layer is provided. A patterned photoresist mask is formed over the etch layer with photoresist features with sidewalls wherein the sidewalls of the photoresist features have striations forming peaks and valleys. The striations of the sidewalls of the photoresist features are reduced. The reducing the striations comprises at least one cycle, wherein each cycle comprises etching back peaks formed by the striations of the sidewalls of the photoresist features and depositing on the sidewalls of the photoresist features. Features are etched into the etch layer through the photoresist features. The photoresist mask is removed.
摘要:
A method for etching a feature in a low-k dielectric layer through a photoresist etch mask over a substrate. A gas-modulated cyclic stripping process is performed for more than three cycles for stripping a single photoresist mask. Each cycle of the gas-modulated cyclic stripping process comprises performing a protective layer formation phase and a stripping phase. The protective layer forming phase using first gas chemistry with a deposition gas chemistry, wherein the protective layer forming phase is performed in about 0.005 to 10 seconds for each cycle. The performing the stripping phase for stripping the photoresist mask using a second gas chemistry using a stripping gas chemistry, where the first gas chemistry is different than the second gas chemistry, wherein the etching phase is performed in about 0.005 to 10 seconds for each cycle.