About: Microscopic Origin of the Fast Blue-Green Luminescence of Chemically Synthesized Non-oxidized Silicon Quantum Dots

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The microscopic origin of the bright nanosecond blue-green photoluminescence (PL), frequently reported for synthesized organically terminated Si quantum dots (Si- QDs), has not been fully resolved, hampering potential applications of this interesting material. Here a comprehensive study of the PL from alkyl-terminated Si-QDs of 2–3 nm size, prepared by wet chemical synthesis is reported. Results obtained on the ensemble and those from the single nano-object level are compared, and they provide conclusive evidence that effi cient and tunable emission arises due to radiative recombination of electron–hole pairs confi ned in the Si-QDs. This understanding paves the way towards applications of chemical synthesis for the development of Si-QDs with tunable sizes and bandgaps. The microscopic origin of the bright nanosecond blue-green photoluminescence (PL), frequently reported for synthesized organically terminated Si quantum dots (Si- QDs), has not been fully resolved, hampering potential applications of this interesting material. Here a comprehensive study of the PL from alkyl-terminated Si-QDs of 2–3 nm size, prepared by wet chemical synthesis is reported. Results obtained on the ensemble and those from the single nano-object level are compared, and they provide conclusive evidence that effi cient and tunable emission arises due to radiative recombination of electron–hole pairs confi ned in the Si-QDs. This understanding paves the way towards applications of chemical synthesis for the development of Si-QDs with tunable sizes and bandgaps. (en)
Title	Microscopic Origin of the Fast Blue-Green Luminescence of Chemically Synthesized Non-oxidized Silicon Quantum Dots Microscopic Origin of the Fast Blue-Green Luminescence of Chemically Synthesized Non-oxidized Silicon Quantum Dots (en)
skos:prefLabel	Microscopic Origin of the Fast Blue-Green Luminescence of Chemically Synthesized Non-oxidized Silicon Quantum Dots Microscopic Origin of the Fast Blue-Green Luminescence of Chemically Synthesized Non-oxidized Silicon Quantum Dots (en)
skos:notation	RIV/61388955:_____/12:00381961!RIV13-GA0-61388955
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GBP208/12/G016)
http://linked.open...iv/cisloPeriodika	20
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Hof, Martin Humpolíčková, Jana
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	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	150396
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/12:00381961
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	photoluminiscence; nanocrystals; spectroscopy (en)
http://linked.open.../riv/klicoveSlovo	photoluminiscence nanocrystals spectroscopy
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[FA069BF8889D]
http://linked.open...i/riv/nazevZdroje	Small
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	9 (xsd:int)
http://linked.open...vavai/riv/projekt	Controlling structure and function of biomolecules at the molecular scale: theory meets experiment
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	8
http://linked.open...iv/tvurceVysledku	Hof, Martin Valenta, J. Humpolíčková, Jana Fučíková, A. Gregorkiewicz, T. Dohnalová, K. Paulusse, J. M. J. Umesh, Ch. P. Zuilhof, H.
http://linked.open...ain/vavai/riv/wos	000309908300013
issn	1613-6810
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1002/smll.201200477

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