Nonvolatile multilevel conductance and memory effect in molecule-based devices

作者：Guo Peng^*; Dong Yuan Wei; Ji Xin; Lu Yin Xiang; Xu Wei

来源：IEEE Electron Device Letters, 2007, 28(7): 572-574.

DOI：10.1109/LED.2007.900085

• electrical bistability
• memory effect
• multilevel conductance
• organic thin film

Electrical characteristics of a single-layer organic device using 2-(hexahydropyrimidin-2-ylidene)-malononitrile (HPYM) that is interposed between Al/Al2O3 (cathode) and Ag (anode) electrodes were investigated. The application of different positive voltages produced different high-conductance currents, resulting in the multilevel memory capability of the device. The high-conductance states could be erased back to the low-conductance state by the application of a negative bias. The formation of an aluminum oxide layer between Al and HPYM layer could be one effective method to increase the data-retention time but could be irrelevant with the electric-field-induced conductance-state transition of the device.

• 出版日期2007-7
• 单位复旦大学