Direct gas-phase synthesis of single-phase beta -FeSi sub(2) nanoparticles

For the first time, phase-pure beta -FeSi sub(2) nanoparticles were successfully produced by gas-phase synthesis. We present a method to fabricate larger quantities of semiconducting beta -FeSi sub(2) nanoparticles, with crystallite sizes between 10 and 30 nm, for solar and thermoelectric applicatio...

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Published inJournal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology Vol. 15; no. 9; pp. 1 - 10
Main Authors Bywalez, Robert, Orthner, Hans, Mehmedovic, Ervin, Imlau, Robert, Kovacs, Andras, Luysberg, Martina, Wiggers, Hartmut
Format Journal Article
LanguageEnglish
Published 01.09.2013
Subjects
Crystallites
Diffraction
Iron
Nanoparticles
Silanes
Synthesis
Thermoelectricity
X-rays
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Summary:For the first time, phase-pure beta -FeSi sub(2) nanoparticles were successfully produced by gas-phase synthesis. We present a method to fabricate larger quantities of semiconducting beta -FeSi sub(2) nanoparticles, with crystallite sizes between 10 and 30 nm, for solar and thermoelectric applications utilizing a hot-wall reactor. A general outline for the production of those particles by thermal decomposition of silane and iron pentacarbonyl is provided based on kinetic data. The synthesized particles are investigated by X-ray diffraction and transmission electron microscopy, providing evidence that the as-prepared materials are indeed beta -FeSi sub(2), while revealing morphological characteristics inherent to the nanoparticles created.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1388-0764
1572-896X
DOI:10.1007/s11051-013-1878-9