Donor doping of single-walled carbon nanotubes by filling of channels with silver

Journal Article · Sat Sep 15 00:00:00 EDT 2012 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776112080092· OSTI ID:22069340

Niu, J J ^[1]

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1. Drexel University, Department of Materials Science and Engineering (United States)

The channels of single-walled carbon nanotubes (SWNTs) are filled with metallic silver. The synthesized nanocomposites are studied by Raman spectroscopy and optical absorption spectroscopy, and these data indicate a substantial modification of the electronic structure of the nanotubes upon their filling. Moreover, X-ray photoelectron spectroscopy shows that the incorporation of the metal leads to a change in the work function of SWNTs due to the Fermi level upshift and to the transfer of an electron density from inserted nanoparticles to the nanotube walls. Thus, the filling of the channels with silver results in donor doping of the nanotubes.

• OSTI ID: 22069340
• Journal Information: Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 3 Vol. 115; ISSN JTPHES; ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ABSORPTION SPECTROSCOPY
CARBON
COMPOSITE MATERIALS
ELECTRON DENSITY
ELECTRONIC STRUCTURE
FERMI LEVEL
NANOTUBES
RAMAN SPECTROSCOPY
SILVER
WORK FUNCTIONS
X-RAY PHOTOELECTRON SPECTROSCOPY