Geometry structure of Si12 clusters doped by one as atom

Thi Hong Tam Ngo1, , Minh Nguyet Pham2, Nguyen Trong Nghia Dinh1
1 Ho Chi Minh City University of Food Industry
2 University of Food Industry Ho Chi Minh City

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Abstract

In this article, optimization of Si12 clusters structure doped by one, two and three As atoms was performed to determine the lowest energy isomers. The density functional theory (DFT) method was used with the hybrid B3LYP functional very suitable for the Si cluster. Accordingly, the relative strength of these isomers and the pure Si clusters were assessed by calculating their binding energy. The results show that the two-As-atom-doped Si12 cluster is strongest compared with the pure Si12 cluster and Si12 clusters doped by one or three As atoms.

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References

[1]. L. X. Benedict, A. Puzder, A. J. Williamson, J. C. Grossman, G. Galli, J. E. Klepeis, J. Y. Raty, O. Pankratov (2003), “Calculation of optical absorption spectra of hydrogenated Si clusters: Bethe-Salpeter equation versus time-dependent local-density approximation”, Physical Review B, (68), 085310.
[2]. R. Ferrando, J. Jellinek, R. L. Johnston (2008), “Nanoalloys: from theory to applications of alloy clusters and nanoparticles”, Chemical Reviews, (108), p. 845-910.
[3]. M. J. Frisch, H. B. Schlegel, G. E. Scuseria, M. A. Robb, J. R. Cheeseman, J. A. Montgomery, T. Vreven, K. N. Kudin, J. C. Buran, J. M. Millam, et al., (2009), Gaussian 09 Revision: B.01, Gaussian Inc., Wallingford, Connecticut, USA.
[4]. P. Gruene, D. M. Rayner, B. Redlich, A. F. G. van der Meer, J. T. Lyon, G. Meijer, A. Fielicke (2008), “Structures of neutral Au7, Au19 and Au20 clusters in the gas phase”, Science, (321), p. 674-676.
[5]. T. Iwasa, A. Nakajima (2012), “Electronic and optical properties of a superatomic heterodimer and trimer: Sc@Si16–V@Si16 and Sc@Si16–Ti@Si16–V@Si16”, The Journal of Physical Chemistry C, (116), p. 14071-14077.
[6]. Kiichirou Koyasu, Minoru Akutsu, Masaaki Mitsui, and Atsushi Nakajima (2005), “Selective Formation of MSi16 (M = Sc, Ti, and V)”, Journal of American Chemical Society 127, (14), p. 4998-4999.
[7]. T. B. Tai, M. T. Nguyen (2011), “A stochastic search for the structures of small germanium clusters and their anions: enhanced stability by spherical Aromaticity of the Ge10 and Ge122- Systems”, Journal of chemical Theory and computation, (7), p. 1119-1130.
[8]. N. M. Tam, T. B. Tai, M. T. Nguyen (2012), “Thermochemical parameters and growth mechanism of the boron-doped silicon clusters, SinBq with n = 1–10 and q = -1, 0, +1”, The Journal of Physical Chemistry C, (116), p. 20086-20098.
[9]. Nguyen Minh Tam, Minh Tho Nguyen (2013), “Heats of formation and thermochemical parameters of small silicon clusters and their ions Sin with n = 2–13”, Chemical Physics Letters, (584), p. 147-154
[10]. N. X. Truong, M. Savoca, D. J. Harding, A. Fielicke, O. Dopfer (2015), “Vibrational spectra and structures of SinC clusters (n = 3–8)”, Physical Chemistry Chemical Physics, (17), p. 18961-18970.