The TDDB Study of Post-CMP Cleaning Effect for L40 Direct Polished Porous Low K Dielectrics Cu Interconnect

2019 ◽  
Vol 33 (10) ◽  
pp. 99-105 ◽  
Author(s):  
Chia-Lin Hsu ◽  
Welch Lin ◽  
Chun-Wei Hsu ◽  
Jen-Chieh Lin ◽  
Teng-Chun Tsai ◽  
...  
Keyword(s):  
Author(s):  
Han Xu ◽  
Amy Shen ◽  
Vlad Tarasov ◽  
Brian White ◽  
Josh Wolf
Keyword(s):  

2014 ◽  
Vol 219 ◽  
pp. 217-220 ◽  
Author(s):  
Hua Cui

TiN metal hardmask has been used to improve etch selectivity to low-k materials and thereby gain better profile control. For 14 nm and smaller technology nodes, it is required that the TiN hardmask is completely removed in order to improve the aspect ratio for subsequent reliable metal deposition. Thus, a chemical cleaning formulation with high TiN etch selectivity toward Cu and low-k is required.


2014 ◽  
Vol 60 (1) ◽  
pp. 933-937 ◽  
Author(s):  
X. F. Zhao ◽  
J. Wu ◽  
V. Chang
Keyword(s):  

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