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

V Svrcek; D Mariotti; M Kondo

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 › peer-review

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

Original language	English
Pages (from-to)	520-527
Journal	Optics Express
Volume	17
Issue number	2
Early online date	7 Jan 2009
Publication status	Published - 19 Jan 2009

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http://uir.ulster.ac.uk/252/1/2009_OPEX_SincsLaser.pdf

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title = "Ambient-stable blue luminescent silicon nanocrystals prepared by nanosecond-pulsed laser ablation in water",

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",

author = "V Svrcek and D Mariotti and M Kondo",

year = "2009",

month = jan,

day = "19",

language = "English",

volume = "17",

pages = "520--527",

journal = "Optics Express",

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publisher = "Optical Society",

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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

JF - Optics Express

SN - 1094-4087

IS - 2

ER -