We developed MIM-type resistive switching memories using silver-ion-conductive polymer electrolytes with simple methods. The current-voltage characteristics of the devices were investigated for different salt concentrations ranging from 1 to 8 wt%. The devices showed bipolar switching behaviors for the salt concentrations from 1 to 4 wt%. However, they exhibited unipolar switching behaviors at 5 wt%, and no switching was observed for greater than 6 wt%. The ON/OFF resistance ratio was achieved up to 106. It was found that the turn-ON and turn-OFF voltages strongly depend on the salt concentration.  From the results of electrical conductivity and cyclic voltammetry measurements, we believe that the observed switching results from formation and annihilation of Ag metal filaments inside the polymer film by solid electrochemical reaction(Figure 1). The devices also showed high programming speed ( 1 week).

Resistive switching memories based on silver-ion-conductive polymer electrolytes

239th National Meeting (2010)

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