Tin sensitization and silver activation on indium tin oxide surfaces

Jeffries, April M.; Wang, Zijian; Opila, Robert L.; Bertoni, Mariana I.

doi:10.1016/j.apsusc.2022.152916

Tin sensitization and silver activation on indium tin oxide surfaces

Journal Article · Mon Feb 28 23:00:00 EST 2022 · Applied Surface Science

DOI:https://doi.org/10.1016/j.apsusc.2022.152916· OSTI ID:1976873

Jeffries, April M. ^[1]; Wang, Zijian ^[2]; Opila, Robert L. ^[2]; Bertoni, Mariana I. ^[3]

Arizona State Univ., Tempe, AZ (United States); OSTI
Univ. of Delaware, Newark, DE (United States)
Arizona State Univ., Tempe, AZ (United States)

Adhesion of electrical contacts on electronic and optoelectronic devices is important for reliable device operation. Sn-sensitization is a widely used process that improves uniformity and adhesion of plated metals to glass and polymer surfaces. Electrically conductive substrates can significantly benefit from improved uniformity, adhesion, and contact resistance to metallic contact layers. In this study, we investigate the process of Sn-sensitization and Ag-activation on indium tin oxide (ITO) surfaces—a dominant transparent conducting oxide used in optoelectronic devices. Here, our results show that ITO films exposed to Sn-sensitization solutions with HCl concentrations below 10 mM effectively modify the surface termination through the process of Sn-sensitization (Sn-bonding at the surface hydroxide sites) without etching the ITO film. However, the subsequent Ag-activation on an ITO surface does not seem to follow the typical response on a glass substrate, suggesting that Ag-activation of an ITO surface is likely limited by the Ag ion size relative to the area density of surface hydroxide sensitization sites.

View Accepted Manuscript (DOE)

Research Organization:: Colorado School of Mines, Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: EE0008166

OSTI ID:: 1976873

Journal Information:: Applied Surface Science, Journal Name: Applied Surface Science Journal Issue: C Vol. 588; ISSN 0169-4332

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Tin sensitization and silver activation on indium tin oxide surfaces

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