期刊
NANO LETTERS
卷 9, 期 4, 页码 1544-1548出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl803639h
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资金
- National Science Foundation [CHE-01 17752]
- Intel Corporation
- Office of Science
- Office of Basic Energy Sciences
- U.S. Department of Energy [DE-AC0205CH1 1231]
- NERSC
- Network for Computational Nanotechnology (NCN)
Carbon nanotube heterojunctions (HJs), which seamlessly connect nanotubes of different chiral structure using a small number of atomicscale defects, represent the ultimate scaling of electronic interfaces. Here we report the first electrical transport measurements on a HJ formed between semiconducting and metallic nanotubes of known chiralities. These measurements reveal asymmetric IV-characteristics and the presence of a quantum dot (OD) with similar to 60 meV charging energy and similar to 75 mell level spacing. A detailed atomistic and electronic model of the HJ enables the identification of specific defect arrangements that lead to the OD behavior consistent with the experiment.
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