A flexible polymer memory device

A flexible polymer memory device is demonstrated in a sandwich structure of polypyrrole/P6FBEu/Au. Conductance switching at a voltage of about 4 V, with an ON/OFF current ratio up to 200, was observed in this flexible memory device. At the low-conductivity state, current density-voltage (J-V) characteristics of the device were dominated by a charge injection current. At the high conductivity state, J-V characteristics were dominated by a space-charge-limited current. Both the ON and OFF states are stable up to 106 read cycles at a read voltage of 1 V. The device can be used as a write-once read-many-times (WORM) memory with good electronic stability. (c) 2007 Elsevier B.V. All rights reserved.