Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 백운규 | - |
dc.date.accessioned | 2019-11-25T02:00:00Z | - |
dc.date.available | 2019-11-25T02:00:00Z | - |
dc.date.issued | 2017-05 | - |
dc.identifier.citation | ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY, v. 6, no. 7, page. P405-P409 | en_US |
dc.identifier.issn | 2162-8769 | - |
dc.identifier.uri | http://jss.ecsdl.org/content/6/7/P405 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/113984 | - |
dc.description.abstract | Silica nanoparticles (NPs) are used as abrasives for tungsten chemical mechanical planarization (CMP) at acidic pH. However, the use of silica NPs at pH near their isoelectric point remains a problem because agglomeration due to low surface charge leads to defects on the tungsten surface during CMP. Herein, we report a simple strategy to increase the surface charge of silica NPs at acidic pH for defect-free tungsten CMP. The isomorphic substitution of Si4+ by Fe3+ ions on the surface of silica NPs by hydrothermal reaction led to a pH-independent permanent negative surface charge, which increased as the concentration of substituted Fe3+ ions increased. At acidic pH, the increased negative surface charge of Fe3+-substituted silica (Fe-silica) NPs resulted in a reduction in the number of agglomerated large particles relative to that of pure silica NPs. As a result, highly negatively-charged Fe-silica NPs showed high performance in the reduction of defect count on the tungsten surface after CMP. (C) 2017 The Electrochemical Society. All rights reserved. | en_US |
dc.description.sponsorship | This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry, & Energy (MOTIE) of the Republic of Korea (No. 20168510050080). | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | ELECTROCHEMICAL SOC INC | en_US |
dc.subject | RESONANCE RAMAN-SPECTROSCOPY | en_US |
dc.subject | PARTICLE-SIZE | en_US |
dc.subject | CHARGE-DENSITY | en_US |
dc.subject | ADSORPTION | en_US |
dc.subject | IRON | en_US |
dc.subject | SLURRIES | en_US |
dc.subject | STABILITY | en_US |
dc.subject | FRAMEWORK | en_US |
dc.subject | ZEOLITES | en_US |
dc.subject | BEHAVIOR | en_US |
dc.title | Highly Dispersed Fe3+-Substituted Colloidal Silica Nanoparticles for Defect-Free Tungsten Chemical Mechanical Planarization | en_US |
dc.type | Article | en_US |
dc.relation.no | 7 | - |
dc.relation.volume | 6 | - |
dc.identifier.doi | 10.1149/2.0171707jss | - |
dc.relation.page | 405-409 | - |
dc.relation.journal | ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY | - |
dc.contributor.googleauthor | Kim, Kijung | - |
dc.contributor.googleauthor | Seo, Jihoon | - |
dc.contributor.googleauthor | Lee, Myeongjae | - |
dc.contributor.googleauthor | Moon, Jinok | - |
dc.contributor.googleauthor | Lee, Kangchun | - |
dc.contributor.googleauthor | Yi, Dong Kee | - |
dc.contributor.googleauthor | Paik, Ungyu | - |
dc.relation.code | 2017011825 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF ENERGY ENGINEERING | - |
dc.identifier.pid | upaik | - |
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