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:
A plasma processing chamber (302) for etching a substrate (306), the substrate having a top surface, a bottom surface and an edge, said plasma processing chamber comprising: a radio frequency (RF) powered chuck (504), said RF powered chuck supporting at least a portion of the bottom surface of the substrate; and a grooved edge ring (308) having an inner surface that is placed over a portion of said RF powered chuck and adjacent to an edge of the substrate; and wherein the grooved ring provides a grooved area in the vicinity of the edge of the substrate.
Abstract:
A plasma processing chamber (302) for etching a substrate (306), the substrate having a top surface, a bottom surface and an edge, said plasma processing chamber comprising: a radio frequency (RF) powered chuck (504), said RF powered chuck supporting at least a portion of the bottom surface of the substrate; and a grooved edge ring (308) having an inner surface that is placed over a portion of said RF powered chuck and adjacent to an edge of the substrate; and wherein the grooved ring provides a grooved area in the vicinity of the edge of the substrate.
Abstract:
A plasma processing chamber (302) for etching a substrate (306), the substrate having a top surface, a bottom surface and an edge, said plasma processing chamber comprising: a radio frequency (RF) powered chuck (504), said RF powered chuck supporting at least a portion of the bottom surface of the substrate; and a grooved edge ring (308) having an inner surface that is placed over a portion of said RF powered chuck and adjacent to an edge of the substrate; and wherein the grooved ring provides a grooved area in the vicinity of the edge of the substrate.