Size-dependent crystallization of Si nanoparticles

Crystallization temperature dependency on Si nanoparticles size was studied by using Raman scattering spectroscopy. Si nanoparticles synthesized by pulsed laser ablation were annealed at various temperatures while they were suspended in helium background gas, and then were classified by a differenti...

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Bibliographic Details
Published in:Applied physics letters 2006-02, Vol.88 (9), p.093119-093119-3
Main Authors: Hirasawa, Makoto, Orii, Takaaki, Seto, Takafumi
Format: Article
Language:English
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Summary:Crystallization temperature dependency on Si nanoparticles size was studied by using Raman scattering spectroscopy. Si nanoparticles synthesized by pulsed laser ablation were annealed at various temperatures while they were suspended in helium background gas, and then were classified by a differential mobility analyzer. After the size classification, Si nanoparticles showed a narrow size distribution which enabled investigation of the size-dependent crystallization. The temperature threshold for the transition from amorphous to crystalline ( T c ) decreased as the particle size decreased: the T c values of the 10, 8, 6, and 4 nm particles were 1273, 1173, 1073 and 773 K , respectively.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2182018