Study of carbon nanotube embedded honey as a resistive switching material

In this paper, natural organic honey embedded with carbon nanotubes (CNTs) was studied as a resistive switching material for biodegradable nonvolatile memory in emerging neuromorphic systems. CNTs were dispersed in a honey-water solution with the concentration of 0.2 wt% CNT and 30 wt% honey. The final honey-CNT-water mixture was spin-coated and dried into a thin film sandwiched in between Cu bottom electrode and Al top electrode to form a honey-CNT based resistive switching memory (RSM). Surface morphology, electrical characteristics and current conduction mechanism were investigated. The results show that although CNTs formed agglomerations in the dried honey-CNT film, both switching speed and the stability in SET and RESET process of honey-CNT RSM were improved. The mechanism of current conduction in CNT is governed by Ohm's law in low-resistance state and the low-voltage range in high-resistance state, but transits to the space charge limited conduction at high voltages approaching the SET voltage.

Automated summary

This paper investigates the use of carbon nanotubes (CNTs) embedded in natural organic honey as a resistive switching material for biodegradable nonvolatile memory. The study shows that despite CNTs forming agglomerations in the dried honey-CNT film, the resistive switching speed and stability of the honey-CNT memory are improved. The current conduction mechanism of CNTs transitions from Ohm's law to space charge limited conduction at high voltages approaching the SET voltage.