Bright Photoluminescence from the Inner Tubes of Peapod-Derived Double-Walled Carbon Nanotubes
- ORNL
- Massachusetts Institute of Technology (MIT)
- Shinshu University
Corrugated carbon nanotubes containing a number of defective carbon rings can be synthesized from the coalescence of C60 encapsulated in SWNTs (peapods). In this letter we show that contrary to common wisdom, the presence of non-hexagonal rings can actually induce metallic behavior. To demonstrate this, we used a combination of photoluminescence studies, Raman spectroscopy, transmission electron microscopy, and first-principle quantum calculations. Furthermore, we demonstrate that these metallic corrugated inner tubes can be converted into semiconducting tubes by high-temperature thermal treatment in argon. This finding demonstrates for the first time the versatility of the electronic properties for the coalesced structures and provides a novel way to tailor them by thermal processing.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). National Center for Computational Sciences (NCCS)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 979172
- Journal Information:
- Small, Vol. 5, Issue 23
- Country of Publication:
- United States
- Language:
- English
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