Use of 3,3-thiobis(1-propanesulfonate) to accelerate microvia filling by copper electroplating

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/100864

Title:	Use of 3,3-thiobis(1-propanesulfonate) to accelerate microvia filling by copper electroplating
Authors:	姚學麟;Chan, Po-Fan;Chiu, Yong-Da;Dow, Wei-Ping;Krug, Klaus;Lee, Yuh-Lang;Yau, Shueh-Lin
Contributors:	理學院化學學系
Date:	2013-12-01
Issue Date:	2026-04-21 14:16:36 (UTC+8)
Publisher:	Electrochemical Society, Inc.;The Electrochemical Society
Abstract:	摘要： The most widely used accelerators for microvia filling by copper electroplating are 3-mercapto-1-propanesulfonate (MPS) and bis(3-sulfopropyl) disulfide (SPS). In this study, a new accelerator, 3,3-thiobis(1-propanesulfonate) (TBPS), which has neither a thiol group (e.g., MPS) nor a disulfide group (e.g., SPS) but rather contains a thioether group and two sulfonic acid groups, was investigated and formulated to perform microvia filling by copper electroplating. The accelerating effect of TBPS on copper electrodeposition and its chemical interaction with chloride ions and H2SO4 were characterized by galvanostatic measurements. Electrochemical analyzes showed that the acceleration of TBPS on copper electrodeposition strongly depended on the chloride ion and H2SO4 concentrations. An optimal copper plating solution composed of CuSO4, polyethylene glycol (PEG), TBPS, chloride ions, and H2SO4 was developed and used to perform bottom-up copper filling of microvias. Although TBPS contains a thioether group instead of a thiol group, a trace amount of TBPS can strongly accelerate copper electrodeposition in the presence of proper chloride ion and H2SO4 concentrations. 其他題名： J. Electrochem. Soc 出版者： The Electrochemical Society 出版日期： 2013-01 出處： Journal of The Electrochemical Society, 2013-01, Vol.160 (12), p.D3271-D3277 資源來源： Institute of Physics Journals 版權： 2013 The Electrochemical Society 識別號： ISSN: 0013-4651 識別號： ISSN: 1945-7111 識別號： EISSN: 1945-7111 識別號： DOI: 10.1149/2.047312jes
Appears in Collections:	[Department of Chemistry] journal & Dissertation

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