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  • 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 Mn2plus in ZnS. The excitation bandgap of ZnS forms exitons, and these excitons get the center of Mn2plus through nonradiation dominates, by means of transition of 4T1 to 6A1 luminescence. This spectrum is evidence that Mn2plus has been incorporated into the ZnS nanoparticles. In comparison with the bulk ZnSMn 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 ZnSMn.
  • 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 Mn2plus in ZnS. The excitation bandgap of ZnS forms exitons, and these excitons get the center of Mn2plus through nonradiation dominates, by means of transition of 4T1 to 6A1 luminescence. This spectrum is evidence that Mn2plus has been incorporated into the ZnS nanoparticles. In comparison with the bulk ZnSMn 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 ZnSMn. (en)
  • V článku je popsáno měření lokální prostorového rozložení fotoluminiscence, způsobené vznikem horkých luminiscenčních center pomocí rastrovací mikroskopie v optickém blízkém poli. Významné maximum luminiscence při vlnové délce 595 nm je způsobeno luminiscencí Mn2plus do ZnS. Excitační pás Zns tvoří excitony, které způsobí, díky nezářovým přechodům z 4T1 so 6A1. Toto spektrum potvrzuje, že Mn2plus bylo vloženo do ZnS nanočástic. Ve srovnání s objemovým materiálem mají tyto nanočástice jasně vyšší účinnost luminiscence a její doznívání je o 4 řády pomalejsší pro nanokrystaly. (cs)
Title
  • Near-field study of hot spot photoluminescence decay in ZnS:Mn nanoparticles
  • Near-field study of hot spot photoluminescence decay in ZnS:Mn nanoparticles (en)
  • Studie doznívání fotoluminiscence horkých skvrn v ZnS:Mn nanočásticích s využitím optického blízkého pole (cs)
skos:prefLabel
  • Near-field study of hot spot photoluminescence decay in ZnS:Mn nanoparticles
  • Near-field study of hot spot photoluminescence decay in ZnS:Mn nanoparticles (en)
  • Studie doznívání fotoluminiscence horkých skvrn v ZnS:Mn nanočásticích s využitím optického blízkého pole (cs)
skos:notation
  • RIV/00216305:26220/07:PU70492!RIV08-GA0-26220___
http://linked.open.../vavai/riv/strany
  • 241-244
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA102/07/0113), Z(MSM0021630503)
http://linked.open...iv/cisloPeriodika
  • 567
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 436544
http://linked.open...ai/riv/idVysledku
  • RIV/00216305:26220/07:PU70492
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • ZnS:Mn nanoparticle, hot luminescent center, near-field optics, photoluminescence decay, measurement (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • CH - Švýcarská konfederace
http://linked.open...ontrolniKodProRIV
  • [30CA64F65BCC]
http://linked.open...i/riv/nazevZdroje
  • Materials Science Forum
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 2007
http://linked.open...iv/tvurceVysledku
  • Grmela, Lubomír
  • Tománek, Pavel
  • Škarvada, Pavel
http://linked.open...n/vavai/riv/zamer
issn
  • 0255-5476
number of pages
http://localhost/t...ganizacniJednotka
  • 26220
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