Abstract:
A feature in a layer (308) is provided. A photoresist layer is formed over the layer (308). The photoresist layer is patterned to form photoresist features (312) with photoresist sidewalls, where the photoresist features (312) have a first critical dimension (316). A conformal layer (320) is deposited over the sidewalls of the photoresist features (312) to reduce the critical dimensions of the photoresist features (312). Features are etched into the layer (308), wherein the layer (308) features have a second critical dimension (324), which is less than the first critical dimension (316).
Abstract:
A method of etching features into a silicon layer with a steady-state gas flow is provided. An etch gas comprising an oxygen containing gas and a fluorine containing gas is provided. A plasma is provided from the etch gas. Then, the flow of the etch gas is stopped.
Abstract:
Methods for forming a protective polymeric coating on a silicon or silicon-carbide electrode of a plasma processing chamber are provided. The polymeric coating provides protection to the underlying surface of the electrode with respect to exposure to constituents of plasma and gaseous reactants. The methods can be performed during a process of cleaning the chamber, or during a process for etching a semiconductor substrate in the chamber.
Abstract:
REDUCTION OF FEATURE CRITICAL DIMENSIONS A feature in a layer (308) is provided. A photoresist layer is formed over the layer (308). The photoresist layer is patterned to form photoresist features (312) with photoresist sidewalls, where the photoresist features (312) have a first critical dimension (316). A conformal layer (320) is deposited over the sidewalls of the photoresist features (312) to reduce the critical dimensions of the photoresist features (312). Features are etched into the layer (308), wherein the layer (308) features have a second critical dimension (324), which is less than the first critical dimension (316). Fig. 3C