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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...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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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. |
format | Online Article Text |
id | pubmed-6829400 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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