Semiconducting quantum confined silicon-tin alloyed nanocrystals prepared by ns pulsed laser ablation in water

V Svrcek, D Mariotti, RA Blackley, WZ Zhou, T Nagai, K Matsubara, M Kondo

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Here we demonstrate the material's synthetic feasibility for semiconducting alloyed silicon-tin nanocrystals (SiSn-NCs) with quantum confinement effects. An environmentally friendly synthesis is achieved by ns laser ablation of amorphous SiSn in water at ambient conditions. Plasmas generated in the liquid by laser pulses are characterized by spatial confinement with very high pressure (GPa), which allowed the growth of the SiSn-NCs via kinetic pathways. We further illustrate that surface engineering by a direct-current atmospheric pressure microplasma is capable of tailoring the SiSn-NCs surface properties without the need for lengthy surfactants, resulting in room temperature photoluminescence (PL); the PL peak wavelength is red-shifted by more than 250 nm with respect to the PL peak wavelengths observed for comparable elemental silicon nanocrystals.
LanguageEnglish
Pages6725-6730
JournalNanoscale
Volume5
DOIs
Publication statusPublished - 2013

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laser ablation
pulsed lasers
tin
nanocrystals
silicon
photoluminescence
water
microplasmas
wavelengths
surface properties
atmospheric pressure
direct current
surfactants
engineering
kinetics
room temperature
synthesis
liquids
pulses
lasers

Cite this

Svrcek, V ; Mariotti, D ; Blackley, RA ; Zhou, WZ ; Nagai, T ; Matsubara, K ; Kondo, M. / Semiconducting quantum confined silicon-tin alloyed nanocrystals prepared by ns pulsed laser ablation in water. In: Nanoscale. 2013 ; Vol. 5. pp. 6725-6730.
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Semiconducting quantum confined silicon-tin alloyed nanocrystals prepared by ns pulsed laser ablation in water. / Svrcek, V; Mariotti, D; Blackley, RA; Zhou, WZ; Nagai, T; Matsubara, K; Kondo, M.

In: Nanoscale, Vol. 5, 2013, p. 6725-6730.

Research output: Contribution to journalArticle

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AU - Svrcek, V

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AU - Matsubara, K

AU - Kondo, M

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