Next Article in Journal
Environmentally Sustainable Cement Composites Based on End-of-Life Tyre Rubber and Recycled Waste Porous Glass
Previous Article in Journal
A Comparative Study on Color Stability of Anthocyanin Hybrid Pigments Derived from 1D and 2D Clay Minerals
Open AccessArticle

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

1
College of Mechanical and Electrical Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, China
2
School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
*
Author to whom correspondence should be addressed.
Materials 2019, 12(20), 3288; https://doi.org/10.3390/ma12203288
Received: 11 September 2019 / Revised: 1 October 2019 / Accepted: 8 October 2019 / Published: 10 October 2019
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. View Full-Text
Keywords: flexible electronics; electromigration; thin films; joule heating; numerical simulation flexible electronics; electromigration; thin films; joule heating; numerical simulation
Show Figures

Figure 1

MDPI and ACS Style

Sun, Q.; Lu, Y.; Tang, C.; Song, H.; Li, C.; Zuo, C. Current-Induced Changes of Surface Morphology in Printed Ag Thin Wires. Materials 2019, 12, 3288.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop