| About this Abstract |
| Meeting |
2011 Electronic Materials Conference
|
| Symposium
|
2011 Electronic Materials Conference
|
| Presentation Title |
NN5, Switching Characteristics of Nonvolatile Organic Resistive Memory Devices with Interfacial Oxide Layers Tuned by O2 Plasma Treatment |
| Author(s) |
Byungjin Cho, Sunghoon Song, Yongsung Ji, Takhee Lee |
| On-Site Speaker (Planned) |
Byungjin Cho |
| Abstract Scope |
Organic resistive memory, based on the resistance change of organic materials, has attracted a significant attention due to its attractive features such as low-cost processing, printability, and flexibility. Meanwhile, the interface engineering has been considered as one of the essential strategies for obtaining high-performance memory devices. We note that naturally formed native oxides on an Al surface strongly influences the switching characteristics and reproducible switching in organic memory can be realized through an intentional introduction of the additional oxide film. However, there have been few detailed studies on the effects of the interfacial oxide on the switching parameters and performance. We herein demonstrated organic resistive memory devices with interfacial oxide layers, the thickness of which depended on O2 plasma treatment time. The memory consisted of a composite material of polyimide and [6,6]-phenyl-C61 butyric acid methyl ester (PCBM) sandwiched between Al electrodes in an 88 cross-bar array structure. The different interfacial oxide thicknesses sequentially changed the ON and OFF states of the fabricated memory devices. We observed that the memory devices treated with the additional plasma showed higher ON/OFF ratios than devices without the treatment, which was due to the relatively large OFF resistance values. However, a long oxidation process widened the threshold voltage distribution and degraded the switching reproducibility. It implies that the oxidation process should be carefully optimized with consideration of essential memory parameters. |
| Proceedings Inclusion? |
Undecided |