Dependence of Ag film thickness on Formation of Ag Nano-crystals to Fabricate Polymer Nonvolatile Memory

摘要

We have investigated the effect of Ag Nano-crystals on nonvolatile memory-cell fabricated whit a conductive polymer such as PVK. The structure of polymer nonvolatile memory-cell was PVK / Ag nano-crystals / PVK between the Al electrodes which feature size is the 4F~2 embedded with Ag nano-crystals in PVK (poly(N-vinylcarbazole). The polymer nonvolatile memory-cell embedded with Ag nano-crystals formed by the basis of 5-nm Ag film showed the memory margin (ratio of I_(on) to I_(off)) is ～5.0×10~1 and the retention time is more than 10~5 seconds. Therefore, it was confirmed that Ag nano-crystal's shape, size, isolation and distribution determine a nonvolatile memory characteristics.