Abstract:
Embodiments of the invention generally provide methods for etching a substrate. In one embodiment, the method includes determining a substrate temperature target profile that corresponds to a uniform deposition rate of etch by-products on a substrate, preferentially regulating a temperature of a first portion of a substrate support relative to a second portion of the substrate support to obtain the substrate temperature target profile on the substrate, and etching the substrate on the preferentially regulated substrate support. In another embodiment, the method includes providing a substrate in a processing chamber having a selectable distribution of species within the processing chamber and a substrate support with lateral temperature control, wherein a temperature profile induced by the substrate support and a selection of species distribution comprise a control parameter set, etching a first layer of material and etching a second layer of material respectively different control parameter sets.
Abstract:
Methods for fabricating a semiconductor device having a lanthanum-family- based oxide layer are described. A gate stack having a lanthanum-family-based oxide layer is provided above a substrate. At least a portion of the lanthanum-family-based oxide layer is modified to form a lanthanum-family-based halide portion. The lanthanum-family-based halide portion is removed with a water vapor treatment.
Abstract:
One embodiment of the present invention is a method used to fabricate an integrated circuit device on a wafer or substrate at a stage where a gate oxide is disposed over the wafer or substrate, a polysilicon layer is disposed thereover, a patterned hardmask is disposed thereover, a patterned antireflective coating is disposed thereover, and a patterned photoresist is disposed thereover, the method including steps of: (a) before stripping the photoresist, etching the polysilicon utilizing a first etch chemistry such as a CF 4 / CL 2 / N 2 / chemistry for a first pediod of time; and (b) etching the polysilicon utilizing a second etch chemistry such as a Hb r / CL 2 /CF 4 / He-O 2 chemistry for a second period of time.
Abstract:
A method and apparatus for operating a matching network within a plasma enhanced semiconductor wafer processing system that uses pulsed power to facilitate plasma processing.
Abstract:
A method and apparatus for operating a matching network within a plasma enhanced semiconductor wafer processing system that uses pulsed power to facilitate plasma processing.