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New Surface Science Study Findings Reported from Novosibirsk State University

June 27, 2014



By a News Reporter-Staff News Editor at Science Letter -- Data detailed on Science have been presented. According to news reporting out of Novosibirsk, Russia, by NewsRx editors, research stated, "The surface morphology of Ge layers grown by Ge deposition on the Si(001) and Si(111) surfaces covered with ultrathin SiO2 films is studied with scanning tunneling microscopy. It is essentially different from that obtained by Ge deposition on the bare Si surfaces, which are performed in similar conditions for comparison."

Our news journalists obtained a quote from the research from Novosibirsk State University, "The SiO2 film is partly decomposed at temperatures above 430 degrees C, leading to the formation of bare Si nanoareas which serve for the epitaxial Ge island nucleation and growth with respect to the Si substrate. At the same time, we found that the SiO2 film residuals prevent the Ge-Si intermixing providing pure Ge islands formation. They appear to be different in shape from the islands grown on the bare surfaces, which contain a significant amount of Si due to the strain-induced Ge-Si intermixing."

According to the news editors, the research concluded: "The possibility of pure Ge islands formation may lead to the Ge/Si nanostructures fabrication with modified optoelectronic characteristics."

For more information on this research see: Surface morphology of Ge layers epitaxially grown on bare and oxidized Si(001) and Si(111) substrates. Surface Science, 2014;625():50-56. Surface Science can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Surface Science - www.elsevier.com/wps/product/cws_home/505676)

Our news journalists report that additional information may be obtained by contacting A.A. Shklyaev, Novosibirsk State Univ, Novosibirsk 630090, Russia. Additional authors for this research include K.N. Romanyuk and S.S. Kosolobov (see also Science).

Keywords for this news article include: Russia, Eurasia, Science, Novosibirsk

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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