Influence of the surface roughness of the bottom electrode on the resistive-switching characteristics of Al/Al2O3/Al and Al/Al2O3/W structures fabricated on glass at 300C
Bipolar and unipolar resistive switching is observed in MIM structures based on Al2O3. The relationship VFORM>VSET>VRESET was found while the IOFF/ION ratio is around 106. VSET is progressively reduced thus compromising endurance and reliability. The surface roughness of the bottom electrode influences the conduction mechanisms. The low thermal budget used enables integration of these devices into BEOL processing.
al2o3 resistive switching beol ald mim capacitor memristor