摘要:
A pattern is formed on an underlying layer of a target object by a pattern forming method. The pattern forming method includes (a) forming a block copolymer layer, which includes a first polymer and a second polymer and is configured to be self-assembled, on the underlying layer; (b) processing the target object to form a first region containing the first polymer and a second region containing the second polymer in the block copolymer layer; (c) etching the second region partway in a thickness direction of the second region in a capacitively coupled plasma processing apparatus after the processing of the target object; (d) generating secondary electrons from an upper electrode of the plasma processing apparatus by applying a negative DC voltage to the upper electrode and irradiating the secondary electrons onto the target object, after the etching of the second region; and (e) additionally etching the second region in the plasma processing apparatus after the irradiating of the secondary electrons onto the target object.
摘要:
Provided is a method for etching an etching target layer of a workpiece. The workpiece has a mask on the etching target layer. The etching target layer and the mask are formed from respective materials for which etching efficiency by a plasma of a rare gas having an atomic number greater than an atomic number of argon is higher than etching efficiency for the materials by a plasma of argon gas. The mask is formed from a material having a melting point higher than that of the etching target layer. The method includes (a) exposing the workpiece to a plasma of a first process gas containing a first rare gas having an atomic number greater than the atomic number of argon, and (b) exposing the workpiece to a plasma of a second process gas containing a second rare gas having an atomic number less than the atomic number of argon.
摘要:
An apparatus for processing reaction products that are deposited when an etching target film contained in a target object to be processed is etched is provided with: a processing chamber; a partition plate; a plasma source; a mounting table; a first processing gas supply unit; a second processing gas supply unit. The processing chamber defines a space, and the partition plate is arranged within the processing chamber and divides the space into a plasma generating space and a substrate processing space, while suppressing permeation of ions and vacuum ultraviolet rays. The plasma source generates a plasma in the plasma forming space. The mounting table is arranged in the substrate processing space to mount the target object thereon.