Controllable p and n doping of single-walled carbon nanotubes by encapsulation of organic molecules and fullerene: A theoretical investigation

WanZhen Liang; Jinlong Yang; Jin Sun
May 2005
Applied Physics Letters;5/30/2005, Vol. 86 Issue 22, p223113
Academic Journal
We report theoretical investigations on the changes in optical and electronic properties of single-walled carbon nanotubes (SWNTs) induced by chemical doping with organic molecules or fullerene C60. It is found that doping alters the electronic and optical properties of parent SWNTs and both p- and n-type doping can be realized on SWNTs by encapsulating organic molecules which have large electron affinities or small ionization energies. The doping-induced optical features and additions of donor/acceptor states to the density of states provide compelling evidence that the standard rigid-band model breaks down and the band-structure changes play an important role on the solid state properties of doped SWNTs.


Related Articles

  • Size effect of quantum conductance in single-walled carbon nanotube quantum dots. Liu, H.; Tao, Y. // European Physical Journal B -- Condensed Matter;Dec2003, Vol. 36 Issue 3, p411 

    The quantum conductance of two kinds of carbon nanotube quantum dots (CNQD) composed of (5,5) and (10,0) tubes, namely (10,0)/(5,5)/(10,0) and (5,5)/(10,0)/(5,5) with different quantum sizes, are calculated. It is shown that for (10,0)/(5,5)/(10,0) CNQD, one on-resonant peak at the Fermi energy...

  • Elastic and electrostatic properties of bamboo-shaped carbon nanotubes. Glukhova, O. E.; Kolesnikova, A. S.; Torgashov, G. V.; Buyanova, Z. I. // Physics of the Solid State;Jun2010, Vol. 52 Issue 6, p1323 

    A technology has been developed to synthesize films of bamboo-shaped carbon nanotubes from simple nanotubes by high-frequency oxygen plasma etching for 30 and 60 s. The electronic structure and mechanical properties of bamboo-shaped single-walled carbon nanotubes have been studied theoretically....

  • Effect of morphology of catalyst thin film on carbon nanotube growth. Gang Li // Inorganic Materials;Oct2010, Vol. 46 Issue 10, p1072 

    The Ni catalyst films were deposited on single crystal Si by magnetron sputtering system. The surface morphologies of the films were controlled by varying the pretreatment temperature in NH. We have investigated how the morphology of Ni after thermal treatment influences on the vertically...

  • Electrical current-induced structural changes and chemical functionalization of carbon nanotubes. Agrawal, S.; Raghuveer, M. S.; Kröger, R.; Ramanath, G. // Journal of Applied Physics;11/1/2006, Vol. 100 Issue 9, p094314 

    We demonstrate that high current densities, combined with air exposure can slice, weld, and chemically functionalize multiwalled carbon nanotubes (CNTs) with carboxyl and allyl moieties, and alter the electrical properties. The conductance of thin film assemblies of CNTs increases by 150%,...

  • FORMATION OF GRAPHENE DOMAINS IN GRAPHITE OXIDE BY PICOSECOND LASER TREATMENT. Trusovas, Romualdas; Ratautas, Karolis; Račiukaitis, Gediminas; Barkauskas, Jurgis; Stankevičienė, Inga; Mažeikienė, Regina // International Conference: Radiation Interaction with Material & ;2012, p452 

    Graphene is most recent obtained allotrope of carbon. It differs from fullerenes and nanotubes, that it is a two dimensional crystal. Due to its specific geometry graphene has unique physical features which can be used in various applications. This material has semiconductors features; it is...

  • Doping of Al[sub x]Ga[sub 1-x]N. Stampfl, C.; Van de Walle, Chris G. // Applied Physics Letters;1/26/1998, Vol. 72 Issue 4, p459 

    N-type Al[sub x]Ga[sub 1-x]N exhibits a dramatic decrease in the free-carrier concentration for x>=0.40. Based on first-principles calculations, we propose that two effects are responsible for this behavior: (i) in the case of doping with oxygen (the most common unintentional donor), a DX...

  • Plasma composition during plasma-enhanced chemical vapor deposition of carbon nanotubes. Bell, M. S.; Lacerda, R. G.; Teo, K. B. K.; Rupesinghe, N. L.; Chhowalla, M. // Applied Physics Letters;8/16/2004, Vol. 85 Issue 7, p1137 

    Neutral species and positive ions were extracted directly from a C2H2:NH3 plasma used to grow vertically aligned carbon nanotubes (CNTs) and analyzed by mass spectrometry. We observe that NH3 suppresses C2H2 decomposition and encourages CNT formation. We show that the removal of excess carbon,...

  • Metal catalyst in CVD growth of carbon nanotubes: role of chemical composition. Yazyev, Oleg V.; Pasquarello, Alfredo // AIP Conference Proceedings;1/4/2010, Vol. 1199 Issue 1, p543 

    Using first principles methods, we systematically study the crucial steps of CVD growth of CNTs, the binding and the diffusion of the carbon feedstock as well as the nucleation of CNTs. Late transition (Ni, Pd, Pt) and coinage (Cu, Ag, Au) metal catalysts were investigated. For all metals, we...

  • Double Photoionization of Endohedrally Confined Atoms. Colavecchia, F. D.; Gasaneo, G.; Mitnik, D. // Journal of Atomic, Molecular & Optical Physics;2011, p1 

    We study the double electronic emission by photon impact from ground state of two-electron atoms in the center of a model spherical fullerene, which is described by a square-well shell. Cross-sections for different well depth are computed within a separable model for the final state, and a...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics