Inclusions in Si whiskers grown by Ni metal induced lateral crystallization

György Zoltán Radnóczi, Daniel Knez, Ferdinand Hofer, Nikolaos Frangis, Nikolaos Vouroutzis, John Stoemenos, Béla Pécz

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Abstract

The formation of Nickel-di-silicide inclusions in silicon whiskers grown during low temperature Ni Metal Induced Lateral Crystallization of amorphous Silicon was studied by High Resolution Transmission Electron Microscopy, Scanning Transmission Electron Microscopy, and Electron Energy Loss Spectroscopy. The heat treatment of the samples lasted for 11 + 11 days at 413 °C for the first 11 days and 442 °C for the rest of the time. The size of the inclusions ranges from just a few atoms to 15-20 nm. It was shown that the NiSi2 inclusions have the form of tetrahedrons, which are bound by {111} coherent interfaces with the Si matrix. These inclusions are homogeneously distributed along the whiskers, and the Ni percentage incorporated in these is 0.035 at. %. The tetrahedral inclusions are formed by trapping NiSi2 clusters at the Si/NiSi2 interface during whisker growth.

Original languageEnglish
Article number145301
JournalJournal of Applied Physics
Volume121
Issue number14
DOIs
Publication statusPublished - Apr 14 2017

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Radnóczi, G. Z., Knez, D., Hofer, F., Frangis, N., Vouroutzis, N., Stoemenos, J., & Pécz, B. (2017). Inclusions in Si whiskers grown by Ni metal induced lateral crystallization. Journal of Applied Physics, 121(14), [145301]. https://doi.org/10.1063/1.4979728