Ambient-stable blue luminescent silicon nanocrystals prepared by nanosecond-pulsed laser ablation in water

V Svrcek, D Mariotti, M Kondo

    Research output: Contribution to journal › Article

    60 Citations (Scopus)

    Abstract

    Even with intensive research, air-stable blue light emission from silicon nanocrystals (Si-ncs) at room temperature still remains a challenge. We show that stable and blue-luminescent Si-ncs can be produced by laser-generated plasma (nanosecond-pulsed excimer laser) confined in water. These Si-ncs exhibit quantum confinement effect dueto their size and are produced with an environmentally compatible process. The effect of aging for several weeks in water and air on blue Si-ncs emission properties is compared. The oxide shell around the nanocrystalline core formed during laser processing in water offers the required conditions for the confinement of excitons that allow for stable (in either air or water) blue photoluminescence at room temperature. (C) 2008 Optical Society of America
    LanguageEnglish
    Pages520-527
    JournalOptics Express
    Volume17
    Issue number2
    Early online date7 Jan 2009
    Publication statusPublished - 19 Jan 2009

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    laser ablation
    pulsed lasers
    nanocrystals
    silicon
    water
    air
    room temperature
    excimer lasers
    lasers
    light emission
    excitons
    photoluminescence
    oxides

    Cite this

    Svrcek, V ; Mariotti, D ; Kondo, M. / Ambient-stable blue luminescent silicon nanocrystals prepared by nanosecond-pulsed laser ablation in water. In: Optics Express. 2009 ; Vol. 17, No. 2. pp. 520-527.
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    abstract = "Even with intensive research, air-stable blue light emission from silicon nanocrystals (Si-ncs) at room temperature still remains a challenge. We show that stable and blue-luminescent Si-ncs can be produced by laser-generated plasma (nanosecond-pulsed excimer laser) confined in water. These Si-ncs exhibit quantum confinement effect dueto their size and are produced with an environmentally compatible process. The effect of aging for several weeks in water and air on blue Si-ncs emission properties is compared. The oxide shell around the nanocrystalline core formed during laser processing in water offers the required conditions for the confinement of excitons that allow for stable (in either air or water) blue photoluminescence at room temperature. (C) 2008 Optical Society of America",
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    Svrcek, V, Mariotti, D & Kondo, M 2009, 'Ambient-stable blue luminescent silicon nanocrystals prepared by nanosecond-pulsed laser ablation in water', Optics Express, vol. 17, no. 2, pp. 520-527.

    Ambient-stable blue luminescent silicon nanocrystals prepared by nanosecond-pulsed laser ablation in water. / Svrcek, V; Mariotti, D; Kondo, M.

    In: Optics Express, Vol. 17, No. 2, 19.01.2009, p. 520-527.

    Research output: Contribution to journal › Article

    TY - JOUR

    T1 - Ambient-stable blue luminescent silicon nanocrystals prepared by nanosecond-pulsed laser ablation in water

    AU - Svrcek, V

    AU - Mariotti, D

    AU - Kondo, M

    PY - 2009/1/19

    Y1 - 2009/1/19

    N2 - Even with intensive research, air-stable blue light emission from silicon nanocrystals (Si-ncs) at room temperature still remains a challenge. We show that stable and blue-luminescent Si-ncs can be produced by laser-generated plasma (nanosecond-pulsed excimer laser) confined in water. These Si-ncs exhibit quantum confinement effect dueto their size and are produced with an environmentally compatible process. The effect of aging for several weeks in water and air on blue Si-ncs emission properties is compared. The oxide shell around the nanocrystalline core formed during laser processing in water offers the required conditions for the confinement of excitons that allow for stable (in either air or water) blue photoluminescence at room temperature. (C) 2008 Optical Society of America

    AB - Even with intensive research, air-stable blue light emission from silicon nanocrystals (Si-ncs) at room temperature still remains a challenge. We show that stable and blue-luminescent Si-ncs can be produced by laser-generated plasma (nanosecond-pulsed excimer laser) confined in water. These Si-ncs exhibit quantum confinement effect dueto their size and are produced with an environmentally compatible process. The effect of aging for several weeks in water and air on blue Si-ncs emission properties is compared. The oxide shell around the nanocrystalline core formed during laser processing in water offers the required conditions for the confinement of excitons that allow for stable (in either air or water) blue photoluminescence at room temperature. (C) 2008 Optical Society of America

    M3 - Article

    VL - 17

    SP - 520

    EP - 527

    JO - Optics Express

    T2 - Optics Express

    JF - Optics Express

    SN - 1094-4087

    IS - 2

    ER -

    Svrcek V, Mariotti D, Kondo M. Ambient-stable blue luminescent silicon nanocrystals prepared by nanosecond-pulsed laser ablation in water. Optics Express. 2009 Jan 19;17(2):520-527.

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