Abstract
The effect of various electrode materials has been studied for organic nonvolatile memory devices using a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin film. The bottom electrodes (BEs) were indium tin oxide (ITO) and Al, while the top electrodes (TEs) were Al, Ti, Cr, ITO, Au, Ni, Pd, and Pt. The ITO/PEDOT:PSS/TE devices only had a bipolar switching behavior, while the Al/PEDOT:PSS/TE devices did not have any switching behavior unless a compliance current (CC) was used in the write-operation method. Then, they had a unipolar switching behavior irregardless of the TE material. Therefore, the BE material and the CC have crucial roles in the switching behavior and characteristics.
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