News Column

Data from D. Narducci et al Provide New Insights into Silicon (Enhancement of the power factor in two-phase silicon-boron nanocrystalline alloys)

July 21, 2014

By a News Reporter-Staff News Editor at Nanotechnology Business Journal -- Data detailed on Silicon have been presented. According to news reporting originating from Bologna, Italy, by VerticalNews correspondents, research stated, "In previous publications it was shown that the precipitation of silicon boride around grain boundaries may lead to an increase of the power factor in nanocrystalline silicon. Such an effect was further explained by computational analyses showing that the formation of an interphase at the grain boundaries along with high boron densities can actually lead to a concurrent increase of the electrical conductivity sigma and of the Seebeck coefficient S. In this communication we report recent evidence of the key elements ruling such an unexpected effect."

Our news editors obtained a quote from the research, "Nanocrystalline silicon films deposited onto a variety of substrates were doped to nominal boron densities in excess of 1020cm-3 and were annealed up to 1000 degrees C to promote boride precipitation. Thermoelectric properties were measured and compared with their microstructure. A concurrent increase of sigma and S with the carrier density was found only upon formation of an interphase."

According to the news editors, the research concluded: "Its dependency on the film microstructure and on the deposition and processing conditions will be discussed."

For more information on this research see: Enhancement of the power factor in two-phase silicon-boron nanocrystalline alloys. Physica Status Solidi A-Applications and Materials Science, 2014;211(6):1255-1258. Physica Status Solidi A-Applications and Materials Science can be contacted at: Wiley-V C H Verlag Gmbh, Boschstrasse 12, D-69469 Weinheim, Germany.

The news editors report that additional information may be obtained by contacting D. Narducci, IMM CNR, Bologna, Italy. Additional authors for this research include B. Lorenzi, X. Zianni, N. Neophytou, S. Frabboni, G.C. Gazzadi, A. Roncaglia and F. Suriano.

Keywords for this news article include: Italy, Boron, Europe, Bologna, Silicon, Nanotechnology, Nanocrystalline, Emerging Technologies

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Source: Nanotechnology Business Journal

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