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- W2022085313 abstract "Ruthenium (Ru) and ruthernium alloys may be utilized as new copper barrier materials in copper interconnects of ultra-large scale integration (ULSI), and chemical mechanical polish (CMP) can be applied in planarization for ULSI production. In this paper, CMP experiments were done on high purity Ru by using home-made slurry, the effect of oxidizer, complexing agent, polishing downforce, pH value, inhibitor species and inhibitor concentration on the material removal rate (MRR) was investigated. The results revealed that MRR can reach 8.7 nm/min under the following conditions: the main constituents in slurry were 1 wt.% SiO2, 1 wt.% (NH4)2S2O8, 1 wt.% tartaric acid and 3 mM imidazole, the pH value was 8.0, the down force was 2.5 psi (17.24 kPa); the roughness Ra was 7.6 nm under these conditions." @default.
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- W2022085313 date "2012-01-01" @default.
- W2022085313 modified "2023-10-02" @default.
- W2022085313 title "Chemical Mechanical Polish of Potential New Barrier Material Ruthenium (Ru) in ULSI Copper Interconnects" @default.
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- W2022085313 doi "https://doi.org/10.4028/www.scientific.net/kem.499.33" @default.
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