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Multistate resistive switching in silver nanoparticle films
Eric J Sandouk1, James K Gimzewski2, Adam Z Stieg3
1Department of Physics and Astronomy, UCLA, USA; Department of Chemistry and Biochemistry, UCLA, USA.
Science and Technology of Advanced Materials
|November 24, 2016
Summary
Composite nanoparticle films show tunable resistive switching for memory applications. These metal-insulator-metal devices form nanofilaments, enabling multiple low-resistance states for potential use in resistive random-access memory cells.
Area of Science:
- Materials Science
- Nanotechnology
- Solid-State Electronics
Background:
- Resistive switching devices are crucial for advanced nanoelectronics and non-volatile memory.
- Metal-insulator-metal (MIM) junctions are key components in these memory applications.
Purpose of the Study:
- To investigate the resistive switching properties of composite nanoparticle films.
- To understand the nonlinear current-voltage behavior and the mechanism behind the switching.
Main Methods:
- Fabrication of silver nanoparticle films coated with tetraethylene glycol on silicon oxide substrates.
- Characterization of nonlinear current-voltage behavior and resistive switching.
- Analysis of the influence of bias voltage, temperature, and sweep frequency on switching states.
Main Results:
- Composite nanoparticle films exhibit controllable resistive switching after an initial forming step.
- Multiple discrete low-resistance states were observed, tunable by operational parameters.
- The switching mechanism was identified as nanofilament formation via electromigration.
Conclusions:
- Nanoparticle films demonstrate potential for resistive random-access memory (RRAM) cells.
- Tunable resistance states, scalability, and ease of fabrication make these films promising for memory technology.
