Structure, electrical characteristics, and high-temperature stability of aerosol jet printed silver nanoparticle films
- Washington State Univ., Pullman, WA (United States). School of Mechanical and Materials Engineering
- Univ. of Texas, El Paso, TX (United States). Dept. of Mechanical Engineering
Printed electronics has emerged as a versatile eco-friendly fabrication technique to create sintered nanoparticle (NP) films on arbitrary surfaces with an excellent control over the film microstructure. While applicability of such films for high-temperature applications is not explored previously, in this work we report the high-temperature electrical stability of silver (Ag) metal NP films fabricated using an Aerosol Jet based printing technique and demonstrate that this behavior is dictated by changes in the film microstructure. In-situ high temperature (24–500°C) impedance spectroscopy measurements show that the real part of the impedance increases with increasing temperature up to 150°C, at which point a decreasing trend prevails until 300°C, followed again by an increase in impedance. The electrical behavior is correlated with the in-situ grain growth of the Ag NP films, as observed afterwards by scanning electron microscopy and X-ray diffraction (XRD), and could be tailored by controlling the initial microstructure through sintering conditions. Using combined diffraction and spectroscopic analytical methods, it is demonstrated the Aerosol Jet printed Ag NP films exhibit enhanced thermal stability and oxidation resistance. In addition to establishing the conditions for stability of Ag NP films, the results provide a fundamental understanding of the effect of grain growth and reduction in grain boundary area on the electrical stability of sintered NP films.
- Research Organization:
- Carnegie Mellon Univ., Pittsburgh, PA (United States); National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- FE0026170
- OSTI ID:
- 1467863
- Alternate ID(s):
- OSTI ID: 1297261
- Journal Information:
- Journal of Applied Physics, Vol. 120, Issue 7; ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
42 ENGINEERING
Silver
Nanoparticles
Printed electronics
High temperature sensors
In-situ impedance measurements
electrical resistivity
x-ray diffraction
thin film growth
x-ray photoelectron spectroscopy
oxidation
sintering
grain boundaries