期刊
IEEE TRANSACTIONS ON ELECTRON DEVICES
卷 68, 期 2, 页码 720-725出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TED.2020.3044021
关键词
Bonding; Hysteresis; Carbon; Electric potential; Schottky diodes; Resistance; Performance evaluation; Amorphous carbon; graphitic carbon; memristor; negative differential resistance (NDR)
资金
- Australian Research Council [DP200101905]
- Australian Research Council [DP200101905] Funding Source: Australian Research Council
Hysteresis and NDR were observed in lateral devices featuring planar graphitic electrodes separated by a nitrogen-doped amorphous carbon (a-CNx) layer. The devices were fabricated using energetic physical vapor deposition and electron-beam lithography. The presence of NDR at a well-defined voltage/electric field in devices formed on a-CNx layers deposited with N-2 pressure of 0.10 mTorr indicates field-induced trapping/detrapping at one of the graphite/a-CNx interfaces.
Hysteresis and NDR have been observed in the room-temperature current-voltage characteristics of lateral devices featuring planar graphitic electrodes separated by a nitrogen-doped amorphous carbon (a-CNx) layer. The devices were fabricated using energetic physical vapor deposition and electron-beam lithography. Devices formed on a-CNx layers deposited with N-2 pressure of 0.10 mTorr exhibited NDR. This NDR occurred at a well-defined voltage/electric field but only after the voltage of the opposite polarity was applied. Based on this behavior, a model is proposed in which the NDR occurs by field-induced trapping/detrapping at one of the graphite/a-CNx interfaces within the device. The results of this investigation highlight the importance of interfaces and defects in determining the characteristics of a-C memristive devices.
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