Near-field study of hot spot photoluminescence decay in ZnS:Mn nanoparticles
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F08%3APU73140" target="_blank" >RIV/00216305:26220/08:PU73140 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Near-field study of hot spot photoluminescence decay in ZnS:Mn nanoparticles
Original language description
The local spatial distribution of photoluminescence due to the creation of hot luminescence centers was measured in the optical near-field by Scanning near-field optical microscope at emission peaks of materials (lambda =595nm), which is due to the luminescence of Mn2+ in ZnS. The excitation bandgap of ZnS forms exitons, and these excitons get the center of Mn2+ through nonradiation dominates, by means of transition of 4T1 - 6A1 luminescence. This spectrum is evidence that Mn2+ has been incorporated into the ZnS nanoparticles. In comparison with the bulk ZnS:Mn phosphors these nanoparticles have clearly higher luminescent efficiency with its luminescent decay time at least 4 orders of magnitude slower. It means that the oscillator intensity of luminescent centers in ZnS:Mn nanocrystal enhances at least 4 orders of magnitude than that in corresponding bulk ZnS:Mn. The local spatial distribution of photoluminescence due to the creation of hot luminescence centers was measured in the opti
Czech name
Studie fotoluminiscence z horkých center ZnS:Mn nanočástic pomocí optického blízkého pole
Czech description
Lokální rozložení fotoluminiscence horkých center ZnS:Mn nanočástic bylo studováno pomocí optické mikroskopie v blízkém poli pro max. hodnotu fotoluminiscence (lambda =595nm). To je způsobeno luminiscencí Mn2+ v ZnS. Excitační pás ZnS tvoří exitony a tyse dosahují center Mn2+ pomocí dominantního nezářivého přechodu, díky luminiscenci přechodu 4T1 - 6A1. Spektrum dokazuje, že ionty Mn2+ jsou vnořeny do ZnS nanočástic. Tyto nanokrystaly mají 4krát větší světelnou účinnost než stejný objemový materiál.
Classification
Type
D - Article in proceedings
CEP classification
JA - Electronics and optoelectronics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA102%2F07%2F0113" target="_blank" >GA102/07/0113: Noise as Diagnostic Tool for Schottky and Could Electron Emission Cathodes</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Materials Structure and Micromechanics of Fracture V
ISBN
978-0-87849-469-9
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
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Publisher name
ttp Trans Tech Publications
Place of publication
Zurich, Switzerland
Event location
Brno
Event date
Jun 27, 2007
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
000253516900055