Nonvolatile memory devices based on ZnO/polyimide nanocomposite sandwiched between two C-60 layers

作者：Li Fushan; Kim Tae Whan^*; Dong Wenguo; Kim Young Ho

来源：Thin Solid Films, 2009, 517(14): 3916-3918.

DOI：10.1016/j.tsf.2009.01.101

• ZnO nanoparticles
• Memory
• Hybrid nanocomposite

The memory effects of a three-layer nonvolatile memory device Al/C-60/ZnO nanoparticles embedded in a polyimide (PI) layer/C-60/p-Si were investigated by using capacitance-voltage (C-V) measurements. Transmission electron microscopy and selected area electron diffraction pattern measurements showed that ZnO nanocrystals were formed inside the PI layer. The insertion of C-60 layer improved the charge trap state density in the ZnO nanoparticle. The density was estimated by the flatband voltage shift in the C-V hysteresis, which increases with the max sweep voltage. Possible operating mechanisms corresponding to the charging and discharging process in the structure are proposed on the basis of the C-V results.

• 出版日期2009-5-29