Freestanding spherical silicon nanocrystals: A model system for studying confined excitons

Bernhard Goller; Sergej Polisski; H Wiggers; Dmitry Kovalev

doi:10.1063/1.3470103

Freestanding spherical silicon nanocrystals: A model system for studying confined excitons

Bernhard Goller, Sergej Polisski, H Wiggers, Dmitry Kovalev

Department of Physics

Research output: Contribution to journal › Article › peer-review

20 Citations (SciVal)

Abstract

We report on the light emitting properties of freestanding hydrogen-terminated spherical silicon nanocrystals. The nanocrystals exhibit size-dependent tunable light emission properties. Many light emission properties of this system are found to be very similar to those known for other systems containing silicon nanocrystals. However, we found specific emission properties of this system ascribed to the spherical shape of silicon nanocrystals and their spatial separation. We attributed all observations to the spatial confinement of excitons within the crystalline core of the indirect band gap silicon nanocrystals.

Original language	English
Article number	041110
Journal	Applied Physics Letters
Volume	97
Issue number	4
DOIs	https://doi.org/10.1063/1.3470103
Publication status	Published - 26 Jul 2010

Keywords

nanostructured materials
elemental semiconductors
excitons
semiconductor quantum dots
visible spectra
photoluminescence
silicon
infrared spectra

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10.1063/1.3470103

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title = "Freestanding spherical silicon nanocrystals: A model system for studying confined excitons",

abstract = "We report on the light emitting properties of freestanding hydrogen-terminated spherical silicon nanocrystals. The nanocrystals exhibit size-dependent tunable light emission properties. Many light emission properties of this system are found to be very similar to those known for other systems containing silicon nanocrystals. However, we found specific emission properties of this system ascribed to the spherical shape of silicon nanocrystals and their spatial separation. We attributed all observations to the spatial confinement of excitons within the crystalline core of the indirect band gap silicon nanocrystals.",

keywords = "nanostructured materials, elemental semiconductors, excitons, semiconductor quantum dots, visible spectra, photoluminescence, silicon, infrared spectra",

author = "Bernhard Goller and Sergej Polisski and H Wiggers and Dmitry Kovalev",

year = "2010",

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doi = "10.1063/1.3470103",

language = "English",

volume = "97",

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T1 - Freestanding spherical silicon nanocrystals: A model system for studying confined excitons

AU - Goller, Bernhard

AU - Polisski, Sergej

AU - Wiggers, H

AU - Kovalev, Dmitry

PY - 2010/7/26

Y1 - 2010/7/26

N2 - We report on the light emitting properties of freestanding hydrogen-terminated spherical silicon nanocrystals. The nanocrystals exhibit size-dependent tunable light emission properties. Many light emission properties of this system are found to be very similar to those known for other systems containing silicon nanocrystals. However, we found specific emission properties of this system ascribed to the spherical shape of silicon nanocrystals and their spatial separation. We attributed all observations to the spatial confinement of excitons within the crystalline core of the indirect band gap silicon nanocrystals.

AB - We report on the light emitting properties of freestanding hydrogen-terminated spherical silicon nanocrystals. The nanocrystals exhibit size-dependent tunable light emission properties. Many light emission properties of this system are found to be very similar to those known for other systems containing silicon nanocrystals. However, we found specific emission properties of this system ascribed to the spherical shape of silicon nanocrystals and their spatial separation. We attributed all observations to the spatial confinement of excitons within the crystalline core of the indirect band gap silicon nanocrystals.

KW - nanostructured materials

KW - elemental semiconductors

KW - excitons

KW - semiconductor quantum dots

KW - visible spectra

KW - photoluminescence

KW - silicon

KW - infrared spectra

UR - http://www.scopus.com/inward/record.url?scp=77955755484&partnerID=8YFLogxK

UR - http://dx.doi.org/10.1063/1.3470103

U2 - 10.1063/1.3470103

DO - 10.1063/1.3470103

M3 - Article

SN - 0003-6951

VL - 97

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 4

M1 - 041110

ER -

Freestanding spherical silicon nanocrystals: A model system for studying confined excitons

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Keywords

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GENERATION OF SINGLET OXYGEN MEDIATED BY SILICON NANOASSEMBL IES FOR NOVEL ORGANIC CATALYTIC REACTIONS

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Freestanding spherical silicon nanocrystals: A model system for studying confined excitons

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Keywords

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GENERATION OF SINGLET OXYGEN MEDIATED BY SILICON NANOASSEMBL IES FOR NOVEL ORGANIC CATALYTIC REACTIONS

Cite this