Control for Au-Ag Nanoporous Structure by Electrodeposition and Dealloying

Mikiko Saito, Jun Mizuno, Shunichi Koga, Hiroshi Nishikawa

研究成果: Conference contribution

抄録

We investigated the composition, morphology, and dissolution behavior of an Au-Ag nanoporous structure formed by electrodeposition and dealloying. Formation of the films was carried out by changing the bath composition and the annealing temperature. The amount of Ag decreased from 70 wt. % to 45-50 wt. % after dealloying. As seen from analysis by a glow discharge optical emission spectrometer (GDOES), not only the amount of Ag, but also that of Au was decreased after dealloying, and a highly concentrated Ag layer was generated at the surface. When the Ag dissolves, an underpotential deposition (UPD) might be introduced, followed by the generation of a high concentration of Ag. From the anodic polarization measurement, the anodic current densities of the samples under 1.5 V were larger than those of the samples under 1.0 V, resulting in the generation of many nanopores. It was confirmed that dealloying involved three processes: whole film dissolution (includes Au dissolution), defects dissolution at the grain boundary, and Ag-selective dissolution.

元の言語English
ホスト出版物のタイトル2018 7th Electronic System-Integration Technology Conference, ESTC 2018 - Proceedings
出版者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9781538668139
DOI
出版物ステータスPublished - 2018 11 26
イベント7th Electronic System-Integration Technology Conference, ESTC 2018 - Dresden, Germany
継続期間: 2018 9 182018 9 21

Other

Other7th Electronic System-Integration Technology Conference, ESTC 2018
Germany
Dresden
期間18/9/1818/9/21

Fingerprint

Electrodeposition
Dissolution
Nanopores
Anodic polarization
Glow discharges
Chemical analysis
Spectrometers
Grain boundaries
Current density
Annealing
Defects
Temperature

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

これを引用

Saito, M., Mizuno, J., Koga, S., & Nishikawa, H. (2018). Control for Au-Ag Nanoporous Structure by Electrodeposition and Dealloying. : 2018 7th Electronic System-Integration Technology Conference, ESTC 2018 - Proceedings [8546350] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ESTC.2018.8546350

Control for Au-Ag Nanoporous Structure by Electrodeposition and Dealloying. / Saito, Mikiko; Mizuno, Jun; Koga, Shunichi; Nishikawa, Hiroshi.

2018 7th Electronic System-Integration Technology Conference, ESTC 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2018. 8546350.

研究成果: Conference contribution

Saito, M, Mizuno, J, Koga, S & Nishikawa, H 2018, Control for Au-Ag Nanoporous Structure by Electrodeposition and Dealloying. : 2018 7th Electronic System-Integration Technology Conference, ESTC 2018 - Proceedings., 8546350, Institute of Electrical and Electronics Engineers Inc., 7th Electronic System-Integration Technology Conference, ESTC 2018, Dresden, Germany, 18/9/18. https://doi.org/10.1109/ESTC.2018.8546350
Saito M, Mizuno J, Koga S, Nishikawa H. Control for Au-Ag Nanoporous Structure by Electrodeposition and Dealloying. : 2018 7th Electronic System-Integration Technology Conference, ESTC 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2018. 8546350 https://doi.org/10.1109/ESTC.2018.8546350
Saito, Mikiko ; Mizuno, Jun ; Koga, Shunichi ; Nishikawa, Hiroshi. / Control for Au-Ag Nanoporous Structure by Electrodeposition and Dealloying. 2018 7th Electronic System-Integration Technology Conference, ESTC 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2018.
@inproceedings{ce078bb0220441dead63eac041d8a123,
title = "Control for Au-Ag Nanoporous Structure by Electrodeposition and Dealloying",
abstract = "We investigated the composition, morphology, and dissolution behavior of an Au-Ag nanoporous structure formed by electrodeposition and dealloying. Formation of the films was carried out by changing the bath composition and the annealing temperature. The amount of Ag decreased from 70 wt. {\%} to 45-50 wt. {\%} after dealloying. As seen from analysis by a glow discharge optical emission spectrometer (GDOES), not only the amount of Ag, but also that of Au was decreased after dealloying, and a highly concentrated Ag layer was generated at the surface. When the Ag dissolves, an underpotential deposition (UPD) might be introduced, followed by the generation of a high concentration of Ag. From the anodic polarization measurement, the anodic current densities of the samples under 1.5 V were larger than those of the samples under 1.0 V, resulting in the generation of many nanopores. It was confirmed that dealloying involved three processes: whole film dissolution (includes Au dissolution), defects dissolution at the grain boundary, and Ag-selective dissolution.",
author = "Mikiko Saito and Jun Mizuno and Shunichi Koga and Hiroshi Nishikawa",
year = "2018",
month = "11",
day = "26",
doi = "10.1109/ESTC.2018.8546350",
language = "English",
booktitle = "2018 7th Electronic System-Integration Technology Conference, ESTC 2018 - Proceedings",
publisher = "Institute of Electrical and Electronics Engineers Inc.",

}

TY - GEN

T1 - Control for Au-Ag Nanoporous Structure by Electrodeposition and Dealloying

AU - Saito, Mikiko

AU - Mizuno, Jun

AU - Koga, Shunichi

AU - Nishikawa, Hiroshi

PY - 2018/11/26

Y1 - 2018/11/26

N2 - We investigated the composition, morphology, and dissolution behavior of an Au-Ag nanoporous structure formed by electrodeposition and dealloying. Formation of the films was carried out by changing the bath composition and the annealing temperature. The amount of Ag decreased from 70 wt. % to 45-50 wt. % after dealloying. As seen from analysis by a glow discharge optical emission spectrometer (GDOES), not only the amount of Ag, but also that of Au was decreased after dealloying, and a highly concentrated Ag layer was generated at the surface. When the Ag dissolves, an underpotential deposition (UPD) might be introduced, followed by the generation of a high concentration of Ag. From the anodic polarization measurement, the anodic current densities of the samples under 1.5 V were larger than those of the samples under 1.0 V, resulting in the generation of many nanopores. It was confirmed that dealloying involved three processes: whole film dissolution (includes Au dissolution), defects dissolution at the grain boundary, and Ag-selective dissolution.

AB - We investigated the composition, morphology, and dissolution behavior of an Au-Ag nanoporous structure formed by electrodeposition and dealloying. Formation of the films was carried out by changing the bath composition and the annealing temperature. The amount of Ag decreased from 70 wt. % to 45-50 wt. % after dealloying. As seen from analysis by a glow discharge optical emission spectrometer (GDOES), not only the amount of Ag, but also that of Au was decreased after dealloying, and a highly concentrated Ag layer was generated at the surface. When the Ag dissolves, an underpotential deposition (UPD) might be introduced, followed by the generation of a high concentration of Ag. From the anodic polarization measurement, the anodic current densities of the samples under 1.5 V were larger than those of the samples under 1.0 V, resulting in the generation of many nanopores. It was confirmed that dealloying involved three processes: whole film dissolution (includes Au dissolution), defects dissolution at the grain boundary, and Ag-selective dissolution.

UR - http://www.scopus.com/inward/record.url?scp=85060055557&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85060055557&partnerID=8YFLogxK

U2 - 10.1109/ESTC.2018.8546350

DO - 10.1109/ESTC.2018.8546350

M3 - Conference contribution

AN - SCOPUS:85060055557

BT - 2018 7th Electronic System-Integration Technology Conference, ESTC 2018 - Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

ER -