EPR investigations of non-oxidized silicon nanoparticles from thermal pyrolysis of silane

Autor:	Lothar Frey, Michael P. M. Jank, Wolfgang Peukert, Richard Körmer, Jia Wu, Michael Otto
Přispěvatelé:	Publica
Rok vydání:	2011
Předmět:	Silanes Silicon Inorganic chemistry Dangling bond chemistry.chemical_element Nanoparticle Condensed Matter Physics Silane law.invention chemistry.chemical_compound chemistry law General Materials Science Crystalline silicon Electron paramagnetic resonance Pyrolysis
Zdroj:	physica status solidi (RRL) - Rapid Research Letters. 5:244-246
ISSN:	1862-6254
DOI:	10.1002/pssr.201105208
Popis:	Electron paramagnetic resonance (EPR) investigations of non-oxidized crystalline silicon nanoparticles (SiNP) from thermal silane pyrolysis revealed that the dangling bond (db) concentration strongly depends on the synthesis temperature. For SiNP synthesized at 1000-1200 °C and processed entirely in inert atmosphere, approximately 1013 cm-2 dbs were found which is at least one order of magnitude higher than the values previously reported for oxidized SiNP. After the synthesis, the dbs can be quenched by the addition of bromine (Br2) that proves their location at the particle surface. (© 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
Databáze:	OpenAIRE
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