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Current-Induced Changes of Surface Morphology in Printed Ag Thin Wires

Current-induced changes of surface morphology in printed Ag thin wires were investigated by current stressing tests and numerical simulation. The samples were printed Ag thin wires on a flexible substrate with input and output pads. Different experimentalresults were obtainedthroughchangingthe curre...

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Detalles Bibliográficos
Autores principales: Sun, Quan, Lu, Yebo, Tang, Chengli, Song, Haijun, Li, Chao, Zuo, Chuncheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6829400/
https://www.ncbi.nlm.nih.gov/pubmed/31658627
http://dx.doi.org/10.3390/ma12203288
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author Sun, Quan
Lu, Yebo
Tang, Chengli
Song, Haijun
Li, Chao
Zuo, Chuncheng
author_facet Sun, Quan
Lu, Yebo
Tang, Chengli
Song, Haijun
Li, Chao
Zuo, Chuncheng
author_sort Sun, Quan
collection PubMed
description Current-induced changes of surface morphology in printed Ag thin wires were investigated by current stressing tests and numerical simulation. The samples were printed Ag thin wires on a flexible substrate with input and output pads. Different experimentalresults were obtainedthroughchangingthe current density after current supply and the mechanism of those phenomena were investigated by numerical simulations based on the method of atomic flux divergence. Good agreement between the simulations and experimental results was reached. It was found that electromigration was the main factor that caused the change of the surface morphology. The contribution of thermal migration can be ignored, and the Joule heating lead by the supplied current had a very significant accelerating effect on electromigration. Guidelines for effectively changing the Ag thin wire surface through providing predetermined current density was proposed, which were expected to be useful for improving the electrical reliability and lifetime of printed Ag thin wires in flexible electronic devices.
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spelling pubmed-68294002019-11-18 Current-Induced Changes of Surface Morphology in Printed Ag Thin Wires Sun, Quan Lu, Yebo Tang, Chengli Song, Haijun Li, Chao Zuo, Chuncheng Materials (Basel) Article Current-induced changes of surface morphology in printed Ag thin wires were investigated by current stressing tests and numerical simulation. The samples were printed Ag thin wires on a flexible substrate with input and output pads. Different experimentalresults were obtainedthroughchangingthe current density after current supply and the mechanism of those phenomena were investigated by numerical simulations based on the method of atomic flux divergence. Good agreement between the simulations and experimental results was reached. It was found that electromigration was the main factor that caused the change of the surface morphology. The contribution of thermal migration can be ignored, and the Joule heating lead by the supplied current had a very significant accelerating effect on electromigration. Guidelines for effectively changing the Ag thin wire surface through providing predetermined current density was proposed, which were expected to be useful for improving the electrical reliability and lifetime of printed Ag thin wires in flexible electronic devices. MDPI 2019-10-10 /pmc/articles/PMC6829400/ /pubmed/31658627 http://dx.doi.org/10.3390/ma12203288 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sun, Quan
Lu, Yebo
Tang, Chengli
Song, Haijun
Li, Chao
Zuo, Chuncheng
Current-Induced Changes of Surface Morphology in Printed Ag Thin Wires
title Current-Induced Changes of Surface Morphology in Printed Ag Thin Wires
title_full Current-Induced Changes of Surface Morphology in Printed Ag Thin Wires
title_fullStr Current-Induced Changes of Surface Morphology in Printed Ag Thin Wires
title_full_unstemmed Current-Induced Changes of Surface Morphology in Printed Ag Thin Wires
title_short Current-Induced Changes of Surface Morphology in Printed Ag Thin Wires
title_sort current-induced changes of surface morphology in printed ag thin wires
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6829400/
https://www.ncbi.nlm.nih.gov/pubmed/31658627
http://dx.doi.org/10.3390/ma12203288
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