/Pulsing Remote Plasma For Ion Damage Reduction And Etch Uniformity Improvement
Abstract

A method of performing pulsed remote plasma etching includes arranging a substrate in a processing chamber configured to perform pulsed remote plasma etching, setting at least one process parameter of the processing chamber, supplying at least one gas mixture to an upper chamber region of the processing chamber, supplying, in an ON period, a first voltage to coils arranged around the upper chamber region to energize the at least one gas mixture and generate plasma within the upper chamber region of the processing chamber, turning off the first voltage in an OFF period to discontinue generating plasma within the upper chamber region of the processing chamber, and alternating between supplying the first voltage in the ON period and turning off the first voltage in the OFF period to generate pulsed remote plasma within the upper chamber region of the processing chamber.

Full Text

What is claimed is:

A method of performing pulsed remote plasma etching includes arranging a substrate in a processing chamber configured to perform pulsed remote plasma etching, setting at least one process parameter of the processing chamber, supplying at least one gas mixture to an upper chamber region of the processing chamber, supplying, in an ON period, a first voltage to coils arranged around the upper chamber region to energize the at least one gas mixture and generate plasma within the upper chamber region of the processing chamber, turning off the first voltage in an OFF period to discontinue generating plasma within the upper chamber region of the processing chamber, and alternating between supplying the first voltage in the ON period and turning off the first voltage in the OFF period to generate pulsed remote plasma within the upper chamber region of the processing chamber.
Timeline
Filed
05/21/2026
Published
09/17/2026
Granted
Not Available
IPC Codes(2)
H01J 37/32:Gas-filled discharge tubes (heating by discharge H05B)
H10P 50/24:of semiconductor materials