About: Ultrafast photoluminescence dynamics of blue-emitting silicon nanostructures

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We report on ultrafast photoluminescence (PL) spectroscopy of blue and red-emitting silicon nanostrucures. We prepared samples of porous Si with different dominating PL bands in time-integrated PL spectrum. These samples show also striking differences in ultrafast PL dynamics. For the red-emitting samples we observe rapid PL onset followed by a two-exponential decay, which is spectrally dependent. For the blue-emitting porous Si the PL builds up several ps and decays mono-exponentially with spectrally independent PL rise and decay times. Our results indicate that a dominant part of the blue and red emission comes from two distinct species with different energy states structures. This is also supported by two-photon absorption induced PL measurements. The two-photon and one-photon absorption induced PL spectra, which are identical for the red-emitting samples, differ substantially for the blue-emitting ones. We report on ultrafast photoluminescence (PL) spectroscopy of blue and red-emitting silicon nanostrucures. We prepared samples of porous Si with different dominating PL bands in time-integrated PL spectrum. These samples show also striking differences in ultrafast PL dynamics. For the red-emitting samples we observe rapid PL onset followed by a two-exponential decay, which is spectrally dependent. For the blue-emitting porous Si the PL builds up several ps and decays mono-exponentially with spectrally independent PL rise and decay times. Our results indicate that a dominant part of the blue and red emission comes from two distinct species with different energy states structures. This is also supported by two-photon absorption induced PL measurements. The two-photon and one-photon absorption induced PL spectra, which are identical for the red-emitting samples, differ substantially for the blue-emitting ones. (en)
Title	Ultrafast photoluminescence dynamics of blue-emitting silicon nanostructures Ultrafast photoluminescence dynamics of blue-emitting silicon nanostructures (en)
skos:prefLabel	Ultrafast photoluminescence dynamics of blue-emitting silicon nanostructures Ultrafast photoluminescence dynamics of blue-emitting silicon nanostructures (en)
skos:notation	RIV/68378271:_____/11:00361260!RIV12-AV0-68378271
http://linked.open...avai/predkladatel	Fyzikální ústav AV ČR, v.v.i.
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(IAA101120804), P(LC510), S, Z(AV0Z10100521), Z(MSM0021620834)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Pelant, Ivan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	236660
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/11:00361260
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	silicon; nanocrystals; time-resolved spectroscopy; luminescence; polarization; two-photon absorption (en)
http://linked.open.../riv/klicoveSlovo	time-resolved spectroscopy two-photon absorption luminescence nanocrystals silicon polarization
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[9CD036E1723C]
http://linked.open...i/riv/nazevZdroje	Physica Status Solidi C: Current Topics in Solid State Physics
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Center of nanotechnology and materials for nanoelectronics Silicon nanostructures for photonics
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	8
http://linked.open...iv/tvurceVysledku	Malý, P. Pelant, Ivan Trojánek, F. Gilliot, P. Hönerlange, B. Žídek, K.
http://linked.open...n/vavai/riv/zamer	Physics and technology of nanostructures, surfaces and thin films Condensed Matter Physics – New Materials and Technologies
issn	1862-6351
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1002/pssc.201000394
is http://linked.open...avai/riv/vysledek of	Ultrafast photoluminescence dynamics of blue-emitting silicon nanostructures Ultrafast photoluminescence dynamics of blue-emitting silicon nanostructures

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