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首页> 外文期刊>Japanese journal of applied physics.Part 1.Regular papers & short notes >Fabrication of 70-nm-Pitch Two-Level Interconnects by using Extreme Ultraviolet Lithography
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Fabrication of 70-nm-Pitch Two-Level Interconnects by using Extreme Ultraviolet Lithography

机译:使用极紫外光刻技术制作间距为70 nm的两级互连

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A 70nm pitch two-level interconnects have been successfully fabricated using extreme ultraviolet lithography (EUVL) (A = 13.5nm). EUVL enabled us to obtain fine pattern formation and usable overlay accuracy at each metal and via patterning. CF3I etching gas and ruthenium (Ru) barrier film deposited with physical vapor deposition (PVD) are key technologies for achieving good electrical properties. Very low effective resistivity of less than 4.5nficm in 35-nm-width wiring was obtained by using PVD-Ru barrier film. Via resistance of 12.4 £2 for via-holes with diameter of 35 nm was obtained. © 2011 The Japan Society of Applied Physics
机译:已经使用极限紫外光刻(EUVL)(A = 13.5nm)成功制造了70nm节距的两级互连。 EUVL使我们能够在每种金属上以及通过构图获得精细的图案形成和可用的覆盖精度。 CF3I蚀刻气体和通过物理气相沉积(PVD)沉积的钌(Ru)阻挡膜是实现良好电性能的关键技术。通过使用PVD-Ru势垒膜,在35纳米宽的布线中获得了非常低的有效电阻率,小于4.5nficm。对于直径为35 nm的通孔,通孔电阻为12.4£2。 ©2011日本应用物理学会

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