Effects of Charge Transfer on the Optical Properties of Graphite Intercalation Compounds

Eklund, P. C.; Doll, Gary L.

doi:10.1007/978-3-642-84479-9_4

Cited by 3 publications

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“…The bromine acts as a ''radial gate'' with very different band filling effects on each shell and nanoscale electrostatics dominates over quantum confinement. The high-frequency Raman-active vibrations of sp 2 carbon (e.g., solid C 60 or graphite) are sensitive to chemical doping [1][2][3]. The C-C bond contracts (expands) for acceptor (donor) [1,2,4], as seen in electrochemically intercalated graphite-H 2 SO 4 compounds via neutron diffraction [5].…”

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confidence: 99%

“…The high-frequency Raman-active vibrations of sp 2 carbon (e.g., solid C 60 or graphite) are sensitive to chemical doping [1][2][3]. The C-C bond contracts (expands) for acceptor (donor) [1,2,4], as seen in electrochemically intercalated graphite-H 2 SO 4 compounds via neutron diffraction [5]. Single-walled carbon nanotubes (SWNTs) can be doped either p or n type [6][7][8].…”

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Chemically Doped Double-Walled Carbon Nanotubes: Cylindrical Molecular Capacitors

et al. 2003

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A double-walled carbon nanotube is used to study the radial charge distribution on the positive inner electrode of a cylindrical molecular capacitor. The outer electrode is a shell of bromine anions. Resonant Raman scattering from phonons on each carbon shell reveals the radial charge distribution. A self-consistent tight-binding model confirms the observed molecular Faraday cage effect, i.e., most of the charge resides on the outer wall, even when this wall was originally semiconducting and the inner wall was metallic.

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confidence: 99%