WANG Liang, WANG Wen-qing, LI Xin, WU Cheng-long, ZHENG Yun-you, SONG Yong-zhen, LI Wei, LI Zheng-xun. Effects of PR Ashing in Process of Enhanced Capacitive Coupled Plasma Etch[J]. , 2012,(2): 204-207
WANG Liang, WANG Wen-qing, LI Xin, WU Cheng-long, ZHENG Yun-you, SONG Yong-zhen, LI Wei, LI Zheng-xun. Effects of PR Ashing in Process of Enhanced Capacitive Coupled Plasma Etch[J]. , 2012,(2): 204-207DOI:
ratio were researched in process of ECCP dry etch model when the gas flow rate and pressure changed. The results show that PR ashing rate and the value of
H/V
would enlarge with the increasing pressure in a certain range. At the same time the uniformity also gradually changed for the better. The ashing rate would first increase and then decrease when the SF
6
flow rate increased. But in this time the value of
H/V
had one contrary law. The PR ashing rate did not change significantly but the value of uniformity became smaller gradually when increased the O
2
flow rate only. When the flow rate of SF
6
and O
2
increased but had one constant low proportion
the etching rate of PR increased first and then decreased