Project supported by the Major National Science and Technology Special Projects(No.2016ZX02301003-004-007);the Natural Science Foundation of China(No.61704046);the Scientific Innovation Grant for Excellent Young Scientists of Hebei University of Technology(No.2015007);the Hebei Natural Science Foundation Project(No.F2018202174)
The cleaning of copper interconnect chemical mechanical polishing(CMP) is a key process in integrated circuits(ICs) fabrication. Colloidal silica, which is used as the abrasive material in copper CMP slurry, is consid...
Project supported by the Major National Science and Technology Special Projects(No.2016ZX02301003-004-007);the Natural Science Foundation of Hebei Province,China(No.F2015202267);the Outstanding Young Science and Technology Innovation Fund of Hebei University of Technology(No.2015007)
Cobalt has become a new type of barrier material with its unique advantages since the copper-interconnects in the great-large scale integrated circuits (GLSI) into 10 nm and below technical nodes, but cobalt and cop...
supported by the Major National Science and Technology Special Projects(No.2016ZX02301003-004-007);the Professional Degree Teaching Case Foundation of Hebei Province,China(No.KCJSZ2017008);the Natural Science Foundation of Hebei Province,China(No.F2015202267);the Natural Science Foundation of Tianjin,China(No.16JCYBJC16100)
Chemical mechanical polishing(CMP) is one of the important machining procedures of multilayered copper interconnection for GLSI, meanwhile polishing slurry is a critical factor for realizing the high polishing perfo...
Project supported by the Major National Science and Technology Special Projects(No.2009ZX02308);the Natural Science Foundation for the Youth of Hebei Province(Nos.F2012202094,F2015202267);the Outstanding Youth Science and Technology Innovation Fund of Hebei University of Technology(No.2013010)
The replacement metal gate(RMG) defectivity performance control is very challenging in high-k metal gate(HKMG) chemical mechanical polishing(CMP). In this study, three major defect types, including fall-on parti...
Beyond 45 nm, due to the superior CMP performance requirements with the metal gate of aluminum in the advanced CMOS process, a novel alkaline slurry for an aluminum gate CMP with poly-amine alkali slurry is investigat...
supported by the Major National Science and Technology Special Projects(No.2009ZX02308);the Fund Project of Hebei Provincial Department of Education,China(No.QN2014208);the Natural Science Foundation of Hebei Province,China(No.E2013202247);the Colleges and Universities Scientific Research Project of Hebei Province,China(No.Z2014088)
TSV(through silicon via) is an emerging technology, which can realize micromation compared with the conventional packaging and extend Moore's law. Chemical mechanical polishing(CMP) is one of the most important s...
supported by the Special Project Items No.2 in National Long-Term Technology Development Plan,China(No.2009ZX02308)
The article studied the electrochemical behavior of P2 alkaline polishing slurry. The main research is the changing discipline of Ecorr and Icorr in the Cu electrolyte at different concentrations of oxidant H2O2. It c...
Project supported by the Special Project Items No.2 in National Long-Term Technology Development Plan,China(Nos.2009ZX02308-003,2014ZX02301003-007)
After the chemical mechanical planarization (CMP) process, the copper surface is contaminated by a mass of particles (e.g. silica) and organic residues (e.g. benzotriazole), which could do great harm to the inte...
Project supported by the Special Project Items No.2 in National Long-Term Technology Development Plan,China(No.2009ZX02308);the Natural Science Foundation of Hebei Province,China(No.F2013202104)
The influence of the components of an alkali polishing slurry and the mutual influences on the Cu polishing rate were investigated by a CMP polishing rate prediction model established with a modified artificial neural...
Project supported by the Major National Science and Technology Special Projects(No.2009ZX02308);the National Natural Science Foundation of Hebei Province,China(No.E2013202247);the Department of Education-Funded Research Projects of Hebei Province,China(No.QN2014208)
Controllable removal rate selectivity with various films (Cu, Ta, SiO2) is a challenging job in barrier CMP. H2O2 as an oxidizer and benzotriazole (BTA) as an inhibitor is considered to be an effective method in b...