Repeatable room-temperature self-healing memory device based on gelatin films

Abstract

Flexible gelatin resistive memory device exhibits a high ON/OFF ratio of over 106. Moreover, the bended gelatin resistive memory device can efficiently heal at room temperature without any external stimulus. This self-healing behavior of gelatin resistive memory device was demonstrated based on the metal chelating ligand. Al ions migrating from the top radio frequency Al electrode contributed to the construction of the metal chelating ligand. The carboxylates of gelatin can form multi-dentate coordination compounds with Al ions, which can restore the memory properties of the gelatin resistive memory device. Thus, Al ion migration from the top Al electrodes plays an important role in self-healing capability. The effect of Al ions on the self-healing mechanism was investigated by using secondary ion mass spectrometry, which is useful for the characterization of Al migration from the top electrode. This capability for restoring the electrical properties of gelatin memory device is desirable for flexible electronics and represents a major step toward self-healable bioelectronics.

Bio-Cellulose Substrate for Fabricating Fully Biodegradable Resistive Random Access Devices

“…As per the previous research we did, through the binding energy characterized by electron spectroscopy for chemical analysis (XPS), we learned that the atomic percentages of C, O, and N of the gelatin dielectric layer were 60, 22, and 18%, respectively. To identify the functional groups of the compound, Fourier-transform infrared spectroscopy reveals the absorption bands of the gelatin dielectric layer.…”

“…Hence, the BC material can be utilized in the present study as the substrate of the RRAM devices. By combining the successful results in the previous research about the gelatin dielectric film, , the integration of the gelatin and film could be ideal for achieving biodegradable and eco-friendly electronics.…”

“…Among various resistive materials, gelatin, which is usually extracted from the skin and bones of animals, is a water-soluble protein. It has been one of the most studied biopolymers on account of its film-forming ability and its usefulness as an outer film to protect food from drying and exposure to light and oxygen. , In our previous work, , gelatin-based RRAM was fabricated on plastic substrates and exhibited good memory properties. Its inherent flexibility is one of the most decisive properties for its successful entry into the future market, enabling application in portable electronics.…”

Impact of Top Electrodes on the Nonvolatile Resistive Switching Properties of Citrus Thin Films

“…Despite the low work function (<4 eV) of Ti, the Al/C1/ITO structure exhibited a better ON/OFF ratio than the Ti/C1/ITO structure did. This result was attributed to the low HRS current due to the native AlO x layer [ 31 , 32 , 33 ]. The low-HRS current favored the high ON/OFF ratio.…”