Ultra-Stable nanoparticles in A IIB VI, (A II = Cd, Zn; B VI = S, Se, Te) compounds

V. R. Romanyuk, I. M. Dmitruk, Yu A. Barnakov, R. V. Belosludov, A. Kasuya

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Laser ablation on binary A IIB VI compounds exhibits in time-of-flight mass spectra abundant peaks at stoichiometric (A<IIB vI:)n with n = 13, 19, 33 and 34 measured on bulk powders of CdSe, CdS, CdTe, ZnS and ZnSe. Investigation on solution grown nanometer size particles of CdSe shown an existence of ultra-stable stoichiometric clusters (CdSe) 13 (CdSe) 19 (CdSe) 33 (CdSe) 34 and (CdSe) 48. This set of n has not been predicted as particularly stable particles in previous bulk fragment models based on either zinc-blende or wurtzite, and a different type of structures is required to explain our experimental results. Present investigation shows that nanoparticles formed in vacuum as magic numbers above are found in solution as preferentially grown species in CdSe, and possibly in other A IIB VI. It is suggested that the high stability of the observed magic clusters originates from their specific structure as endohedral binary fullerenes, supposedly. These molecular-like particles composed of few tens of atoms lie between atom and solid, and exhibit novel materials functions not realizable in the bulk.

Original languageEnglish
Pages (from-to)2111-2118
Number of pages8
JournalJournal of Nanoscience and Nanotechnology
Volume9
Issue number3
DOIs
Publication statusPublished - 2009 Mar

Keywords

  • Closed shell
  • Endohedral structure
  • II-VI compound nanoparticles
  • Magic numbers
  • Mass spectra

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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