Tokyo Electron Limited

Yasuo Asada

Nobuhiro Takahashi

Takehiko Orii

Ayano Hagiwara

Tatsuya Yamaguchi

Shinji Irie

Jun Lin

Junichiro Matsunaga

Kazuhito Miyata

Kenji Tanouchi

Kakeru Wada

An etching method for performing side-etching of silicon germanium layers of a substrate having alternating silicon layers and the silicon germanium layers formed thereon is provided. The method includes modifying surfaces of residuals by supplying a plasmarized gas containing hydrogen to the residuals on exposed end surfaces of the silicon germanium layers, and performing side-etching on the silicon germanium layers by supplying a fluorine-containing gas to the silicon germanium layers.

Etching method and substrate processing system

An etching method for etching a silicon-containing film formed in a substrate by supplying an etching gas to the substrate is provided. The method includes supplying an amine gas to the substrate, in which the silicon-containing film, a porous film, and a non-etching target film that is a film not to be etched but is etchable by the etching gas are sequentially formed adjacent to each other, so that amine is adsorbed onto walls of pores of the porous film. The method further includes supplying the etching gas for etching the silicon-containing film to the substrate in which the amine is adsorbed onto the walls of the pores of the porous film.

Etching method and apparatus

A technique for making etching amounts uniform in selectively etching SiGe layers formed on a wafer with respect to at least one of an Si layer, an SiOlayer, and an SiN layer is provided. In an etching process where SiGe layers in a wafer W in which the SiGe layers and Si layers are alternately stacked and exposed in a recess are removed by side etching, ClFgas and HF gas are simultaneously supplied to the wafer W. Accordingly, it is possible to make the etching rates for respective SiGe layers uniform, and it becomes possible to obtain a uniform etching amount for respective SiGe layers.

Substrate processing method and storage medium

There is provided a method of etching a silicon-containing film formed on a substrate, the method including: etching the silicon-containing film by using both a first fluorine-containing gas and a second fluorine-containing gas, the first fluorine-containing gas including at least an Fgas and the second fluorine-containing gas including at least a ClFgas, an IFgas, an IFgas or an SFgas.

Method of etching silicon-containing film, computer-readable storage medium, and apparatus for etching silicon-containing film

There is provided an etching method which includes: supplying an etching gas to a workpiece including a first SiGe-based material and a second SiGe-based material having different Ge concentrations; and selectively etching the first SiGe-based material and the second SiGe-based material with respect to the other using a difference in incubation time until the first SiGe-based material and the second SiGe-based material begin to be etched by the etching gas.

Etching method

There is provided an etching method which includes: forming a blocking film configured to prevent an etching gas for etching a silicon-containing film from passing through each pore of a porous film and prevent the etching gas from being supplied to a film not to be etched, by supplying at least one film-forming gas to a substrate in which the silicon-containing film, the porous film, and the film not to be etched are sequentially formed adjacent to each other in a lateral direction; and etching the silicon-containing film by supplying the etching gas.

Growing community of inventors

Nirasaki, Japan

Yasuo Asada