Nano-Structure-Controlled Very Low Resistivity Cu Wires Formed by High Purity and Optimized Additives

Resistivity increase in nano-level Cu wires is becoming a critical issue for high speed ULSIs. We have established a new manufacturing process utilizing very high purity 9N electrolyte and optimized additives to control nano-structures of Cu wires, and we realized Cu wires for practical use with 50%...

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Main Authors: Jin Onuki, Kunihiro Tamahashi, Takashi Inami, Takatoshi Nagano, Yasushi Sasajima, Shuji Ikeda
Format: Article
Language:English
Published: IEEE 2018-01-01
Series:IEEE Journal of the Electron Devices Society
Subjects:
Online Access:https://ieeexplore.ieee.org/document/8304535/
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spelling doaj-3d73bc610daf4e6f8ed6e1a9c0ac39d42021-03-29T18:46:25ZengIEEEIEEE Journal of the Electron Devices Society2168-67342018-01-01650651110.1109/JEDS.2018.28084948304535Nano-Structure-Controlled Very Low Resistivity Cu Wires Formed by High Purity and Optimized AdditivesJin Onuki0https://orcid.org/0000-0002-0361-5268Kunihiro Tamahashi1Takashi Inami2Takatoshi Nagano3Yasushi Sasajima4Shuji Ikeda5https://orcid.org/0000-0001-7643-5578Graduate School of Science and Technology, Ibaraki University, Hitachi, JapanGraduate School of Science and Technology, Ibaraki University, Hitachi, JapanGraduate School of Science and Technology, Ibaraki University, Hitachi, JapanGraduate School of Science and Technology, Ibaraki University, Hitachi, JapanGraduate School of Science and Technology, Ibaraki University, Hitachi, JapanTsukuba Reseach Laboratory, Tei Solutions, Tsukuba, JapanResistivity increase in nano-level Cu wires is becoming a critical issue for high speed ULSIs. We have established a new manufacturing process utilizing very high purity 9N electrolyte and optimized additives to control nano-structures of Cu wires, and we realized Cu wires for practical use with 50% lower resistivity than those made with the conventional process. Using STEM analyses and phase field simulation, we also ascertained the reason for getting the very low resistivity Cu wires.https://ieeexplore.ieee.org/document/8304535/High purity electrolytenano-structure controlled Cu wireoptimized additiveslow resistivity
collection DOAJ
language English
format Article
sources DOAJ
author Jin Onuki
Kunihiro Tamahashi
Takashi Inami
Takatoshi Nagano
Yasushi Sasajima
Shuji Ikeda
spellingShingle Jin Onuki
Kunihiro Tamahashi
Takashi Inami
Takatoshi Nagano
Yasushi Sasajima
Shuji Ikeda
Nano-Structure-Controlled Very Low Resistivity Cu Wires Formed by High Purity and Optimized Additives
IEEE Journal of the Electron Devices Society
High purity electrolyte
nano-structure controlled Cu wire
optimized additives
low resistivity
author_facet Jin Onuki
Kunihiro Tamahashi
Takashi Inami
Takatoshi Nagano
Yasushi Sasajima
Shuji Ikeda
author_sort Jin Onuki
title Nano-Structure-Controlled Very Low Resistivity Cu Wires Formed by High Purity and Optimized Additives
title_short Nano-Structure-Controlled Very Low Resistivity Cu Wires Formed by High Purity and Optimized Additives
title_full Nano-Structure-Controlled Very Low Resistivity Cu Wires Formed by High Purity and Optimized Additives
title_fullStr Nano-Structure-Controlled Very Low Resistivity Cu Wires Formed by High Purity and Optimized Additives
title_full_unstemmed Nano-Structure-Controlled Very Low Resistivity Cu Wires Formed by High Purity and Optimized Additives
title_sort nano-structure-controlled very low resistivity cu wires formed by high purity and optimized additives
publisher IEEE
series IEEE Journal of the Electron Devices Society
issn 2168-6734
publishDate 2018-01-01
description Resistivity increase in nano-level Cu wires is becoming a critical issue for high speed ULSIs. We have established a new manufacturing process utilizing very high purity 9N electrolyte and optimized additives to control nano-structures of Cu wires, and we realized Cu wires for practical use with 50% lower resistivity than those made with the conventional process. Using STEM analyses and phase field simulation, we also ascertained the reason for getting the very low resistivity Cu wires.
topic High purity electrolyte
nano-structure controlled Cu wire
optimized additives
low resistivity
url https://ieeexplore.ieee.org/document/8304535/
work_keys_str_mv AT jinonuki nanostructurecontrolledverylowresistivitycuwiresformedbyhighpurityandoptimizedadditives
AT kunihirotamahashi nanostructurecontrolledverylowresistivitycuwiresformedbyhighpurityandoptimizedadditives
AT takashiinami nanostructurecontrolledverylowresistivitycuwiresformedbyhighpurityandoptimizedadditives
AT takatoshinagano nanostructurecontrolledverylowresistivitycuwiresformedbyhighpurityandoptimizedadditives
AT yasushisasajima nanostructurecontrolledverylowresistivitycuwiresformedbyhighpurityandoptimizedadditives
AT shujiikeda nanostructurecontrolledverylowresistivitycuwiresformedbyhighpurityandoptimizedadditives
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