Presentation 2004/11/4
Characteristic of Thin VN Barrier in Cu/VN/SiOC/Si System
Mayumi B. TAKEYAMA, Genta MIZUNO, Yoshie WAKABAYASHI, Atsushi NOYA,
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Abstract(in English) As the Cu interconnect feature size decreases, the signal delay due to resistance-capacitance (RC) product becomes the major limitation to achieve faster circuit speeds. In order to reduce the RC time delays, an application of low dielectric constant materials (low-k) as a field insulating layer has examined. In the present study, the thin VN barrier with ~10 nm in thickness is examined as the barrier in the Cu/VN/SiOC/Si system with the low-k material. The system showed the excellent thermal stability after annealing at 500℃ higher for 30 min without structural change of the barrier and interfacial reaction in the system due to annealing. This is because the VN barrier has excellent properties in chemical stability and in structural stability. Moreover, the application of the VN barrier with low resistivity is also effective to reduce the RC delays, because the VN barrier is lower in resistivity than the Ta or TaN barrier. Therefore, the VN barrier can be applicable between the Cu interconnect and CVD-SiOC layer as the 65nm-node technology.
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Keyword(in English) Si-ULSI / Cu interconnects / low-k / VN / diffusion barrier
Paper # CPM2004-130
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Committee CPM
Conference Date 2004/11/4(1days)
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Registration To Component Parts and Materials (CPM)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Characteristic of Thin VN Barrier in Cu/VN/SiOC/Si System
Sub Title (in English)
Keyword(1) Si-ULSI
Keyword(2) Cu interconnects
Keyword(3) low-k
Keyword(4) VN
Keyword(5) diffusion barrier
1st Author's Name Mayumi B. TAKEYAMA
1st Author's Affiliation Dept. of Electrical and Electronic Engineering, Kitami Institute of Technology()
2nd Author's Name Genta MIZUNO
2nd Author's Affiliation Dept. of Electrical and Electronic Engineering, Kitami Institute of Technology
3rd Author's Name Yoshie WAKABAYASHI
3rd Author's Affiliation Dept. of Electrical and Electronic Engineering, Kitami Institute of Technology:(Present address)Forum Engineering Inc.
4th Author's Name Atsushi NOYA
4th Author's Affiliation Dept. of Electrical and Electronic Engineering, Kitami Institute of Technology
Date 2004/11/4
Paper # CPM2004-130
Volume (vol) vol.104
Number (no) 425
Page pp.pp.-
#Pages 4
Date of Issue