Current-Induced Changes of Surface Morphology in Printed Ag Thin Wires
Abstract
:1. Introduction
2. Experimental Procedures and Results
3. Atomic Migration and Simulation
4. Discussion
4.1. Joule Heating of Silver Wire under Current Supply
4.2. Atomic Migration of Silver Wire by EM and TM
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Samples | Current Density (MA/cm2) | Current Supply Time (h) | Resistance Change | Surface Morphology |
---|---|---|---|---|
I | 0.4 | 1 | −0.4% | Unchanged |
II | 0.8 | 1 | −5.3% | Densification |
III | 1.0 | 1 | 16.5% | Voids and hillocks |
IV | 1.2 | less than 1 | +∞ | Open circuit |
Parameters | Unit | Ag | PET |
---|---|---|---|
Density | g/cm3 | 10.49 | 1.33 |
Young’s Modulus | GPa | 73.2 | 4 |
Poisson’s Ratio | - | 0.38 | 0.3 |
Thermal Conductivity | W/(m·K) | 429 | 0.2 |
Electrical Conductivity | S/m | 6.3 × 107 | 0 |
Specific Heat | J/(g·K) | 240 | 1200 |
Emissivity | - | 0.04 | 0.8 |
Parameters | Value |
---|---|
Ea | 0.9 eV |
D0 | 1.71 × 10−5 m2/s |
Z* | −21 |
Q* | −0.0867 eV |
Ω | 1.71 ×10−29 m3/atom |
ρ0 | 1.6 × 10−7 Ω·m |
α | 3.8 × 10−3 1/K |
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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. https://doi.org/10.3390/ma12203288
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(20):3288. https://doi.org/10.3390/ma12203288
Chicago/Turabian StyleSun, Quan, Yebo Lu, Chengli Tang, Haijun Song, Chao Li, and Chuncheng Zuo. 2019. "Current-Induced Changes of Surface Morphology in Printed Ag Thin Wires" Materials 12, no. 20: 3288. https://doi.org/10.3390/ma12203288