About: Hot-phonon-induced indirect absorption in silicon nanocrystals

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We studied the nonlinear transient absorption dynamics in silicon nanocrystals/SiO2 superlattices. A different dependence of the measured dynamics on excitation intensity was observed depending on the relative position of the probe photon energy and the absorption edge of nanocrystals. At low photon energies, the dynamics changed with excitation fluence and the signal was ascribed to excited state absorption. However, at photon energies above the absorption edge, the phonon enhancement of indirect absorption prevails over excited state absorption what is reflected in excitation fluence independent dynamics of transient absorption. (c) 2013 AIP Publishing LLC. We studied the nonlinear transient absorption dynamics in silicon nanocrystals/SiO2 superlattices. A different dependence of the measured dynamics on excitation intensity was observed depending on the relative position of the probe photon energy and the absorption edge of nanocrystals. At low photon energies, the dynamics changed with excitation fluence and the signal was ascribed to excited state absorption. However, at photon energies above the absorption edge, the phonon enhancement of indirect absorption prevails over excited state absorption what is reflected in excitation fluence independent dynamics of transient absorption. (c) 2013 AIP Publishing LLC. (en)
Title	Hot-phonon-induced indirect absorption in silicon nanocrystals Hot-phonon-induced indirect absorption in silicon nanocrystals (en)
skos:prefLabel	Hot-phonon-induced indirect absorption in silicon nanocrystals Hot-phonon-induced indirect absorption in silicon nanocrystals (en)
skos:notation	RIV/00216208:11320/13:10193642!RIV14-GA0-11320___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(7E11021), P(GA13-12386S), S
http://linked.open...iv/cisloPeriodika	17
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Kořínek, Miroslav Kozák, Martin Malý, Petr Trojánek, František
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	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	78097
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/13:10193642
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	DYNAMICS; SI NANOCRYSTALS; CARRIER RELAXATION (en)
http://linked.open.../riv/klicoveSlovo	DYNAMICS CARRIER RELAXATION SI NANOCRYSTALS
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[FAF2E60C2ECA]
http://linked.open...i/riv/nazevZdroje	Journal of Applied Physics
http://linked.open...in/vavai/riv/obor	BH
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Fotovodivost a dynamika excitací v nanostrukturovaných a neuspořádaných polovodičích na ultrarychlé časové škále Silicon Nanodots for Solar Cell Tandem
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	114
http://linked.open...iv/tvurceVysledku	Malý, Petr Kozák, Martin Trojánek, František Gutsch, S. Hiller, D. Kořínek, Miroslav Zacharias, M.
http://linked.open...ain/vavai/riv/wos	000327591900004
issn	0021-8979
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1063/1.4829006
http://localhost/t...ganizacniJednotka	11320

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