LASER-DRIVEN SYNTHESIS OF CARBON AND SILICON CLUSTERS FROM GAS-PHASE REACTANTS

M. Ehbrecht, H. Ferkel, V.V. Smirnov, O. Stelmakh, W. Zhang and F. Huisken
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M. Ehbrecht: Max-Planck-Institut für Strömungsforschung, Bunsenstrasse 10, D-37073 Göttingen, Germany
H. Ferkel: Max-Planck-Institut für Strömungsforschung, Bunsenstrasse 10, D-37073 Göttingen, Germany
V.V. Smirnov: Max-Planck-Institut für Strömungsforschung, Bunsenstrasse 10, D-37073 Göttingen, Germany
O. Stelmakh: Max-Planck-Institut für Strömungsforschung, Bunsenstrasse 10, D-37073 Göttingen, Germany
W. Zhang: Max-Planck-Institut für Strömungsforschung, Bunsenstrasse 10, D-37073 Göttingen, Germany
F. Huisken: Max-Planck-Institut für Strömungsforschung, Bunsenstrasse 10, D-37073 Göttingen, Germany

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 807-811

Abstract: A newly developed technique is employed for the production of carbon and silicon cluster beams starting from gaseous compounds. It is based on theCO2-laser-induced decomposition of molecular gases containing carbon and silicon, such asCO2H2andSiH4, in a flow reactor. In order to decompose acetylene,SF6is used as a sensitizer. By introducing a skimmer into the reaction zone, the generated silicon and carbon clusters are transferred to free molecular flow and analyzed with a time-of-flight mass spectrometer. It is shown that the technique can be efficiently employed to produce fullerenesC60andC70and, in the case of silicon, ultrapure nanosized particles of up to 3-nm diameter.

Date: 1996
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DOI: 10.1142/S0218625X96001467

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