DC and AC analyses of a printed flexible memory device

Printed flexible cross-bar memory devices were characterized by both DC and AC techniques for their voltage triggered bi-stable behaviour and for interface properties between printed functional layers. The printed devices were compared with laminated devices with similar chemistry to identify the effects resultant from the printing process. Both printed and laminated memory devices demonstrated bi-stable behaviour with an ON/OFF ratio greater than 105. However, printed memories were found to possess an additional process-induced interfacial layer. The impact of this layer could be clearly demonstrated and analyzed in impedance spectra. Impedance spectroscopy was shown to be a powerful tool supplementing DC characterizations.