Atomic and electronic structure of new hollow-based symmetric families of silicon nanoclusters

Тип публикации: статья из журнала

Год издания: 2007

Идентификатор DOI: 10.1021/jp0777216

Ключевые слова: Hexagonal junctions, Silicon fullerenes, Electronic structure, Energy gap, Fullerenes, Particle size, Quantum theory, Silicon, Nanoclusters

Аннотация: We have systematically constructed a set of stable silicon nanocluster families with large arbitrary fullerene-type hollows inside. In addition, conglomerate structures are designed by connecting the nanoclusters through pentagonal and hexagonal junctions. The atomic and electronic structure of the proposed objects is investigated using the semiempirical quantum-mechanical method. It is shown that within each family the band gap and the stability are inversely proportional to the particle effective size. The clusters inherit a wide variety of structural and symmetry properties from their parent silicon fullerenes. The conglomerates confine electrons like quasi-molecules with a peculiar electronic structure related to the junctions. Quantum dots and their conglomerates can host guest atoms in their hollows and therefore present a new promising type of nanomaterials with tunable electronic properties.

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Издание

Журнал: JOURNAL OF PHYSICAL CHEMISTRY C

Выпуск журнала: Vol. 111, Is. 51

Номера страниц: 18824-18830

ISSN журнала: 19327447

Место издания: WASHINGTON

Издатель: AMER CHEMICAL SOC

Авторы

  • Avramov P.V. (L. V. Kirensky Institute of Physics,SB,RAS)
  • Sorokin P.B. (Siberian Federal University)
  • Fedorov D.G. (RICS,National Institute of Advanced Industrial Science and Technology (AIST))
  • Chernozatonskii L.A. (N.M. Emanuel Institute of Biochemical Physics,RAS)
  • Gordon M.S. (Ames National Laboratory,Department of Chemistry,Iowa State University)

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