期刊
APPLIED PHYSICS LETTERS
卷 85, 期 12, 页码 2364-2366出版社
AMER INST PHYSICS
DOI: 10.1063/1.1794356
关键词
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The bottom-up fabrication and electrical properties of end-to-end contacted multiwalled carbon nanotube (MWCNT) heterojunctions are reported. The vertically aligned MWCNT heterojunction arrays are formed via successive plasma-enhanced chemical vapor deposition processing to achieve the layered junction architecture. Electron microscopy and current-sensing atomic force microscopy are used to reveal the physical nature of the junctions. Symmetric, nonlinear I-V curves of the as-fabricated junctions indicate that a tunnel barrier is formed between the end-to-end contacted MWCNTs. Repeated high bias I-V scans of many devices connected in parallel fuses the heterojunctions, as manifested by a shift to linear I-V characteristics.
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