Publication detail

Near-field investigation of ZnS:Mn nanocrystal phosphors in thin-film electroluminescent device

GRMELA, L. TOMÁNEK, P.

Original Title

Near-field investigation of ZnS:Mn nanocrystal phosphors in thin-film electroluminescent device

Czech Title

Výzkum luminoforů ZnS:Mn s nanokrystaly v tenkovrstvé elektroluminiscenční součástce pomocí blízkého pole

English Title

Near-field investigation of ZnS:Mn nanocrystal phosphors in thin-film electroluminescent device

Type

abstract

Language

en

Original Abstract

. A study of the luminescence characteristics of nanostructured ZnS:Mn ACTFEL devices is presented. Nanocrystal ZnS:Mn phosphor has been prepared by sol method using inorganic materials at room temperature. The nanocrystal of ZnS:Mn has cubic crystal structure with average 3 nm of particle size, emitting bright orange light at peak wavelength 585-595 nm with the full width of half maximum 90 nm under UV 337 nm excitation, and the brightness as high as the corresponding bulk pure cubic ZnS:Mn phosphor. In comparison with the bulk ZnS:Mn phosphor these nanocrystals have clearly high luminescent efficiency with its luminescent decay time at least 5 orders of magnitude faster. It means that the oscillator intensity of luminescent centers in ZnS:Mn nanocrystal enhances at least 5 orders of magnitude than that in corresponding bulk ZnS:Mn. The local measurement of this luminescent efficiency by Scanning near-field optical microscope allows discover a hot luminescence in these nanocrystals.

Czech abstract

Článek se zabývá luminescenčními charakteristikami nanostrukturovaného ZnS:Mn ACTFEL. Nanokrystal ZnS:Mn vykazuje kubickou strukturu s částicemi o průměru 3 nm a vyzařuje jasně oranžové světlo (585-595).Ve srovnání s objemovým materiálem je světelná účinnost 5x vyšší. Lokální měření této účinnosti pomocí SNOM umožní odkrýt místa horké luminiscence v nanokrytsalech.

English abstract

. A study of the luminescence characteristics of nanostructured ZnS:Mn ACTFEL devices is presented. Nanocrystal ZnS:Mn phosphor has been prepared by sol method using inorganic materials at room temperature. The nanocrystal of ZnS:Mn has cubic crystal structure with average 3 nm of particle size, emitting bright orange light at peak wavelength 585-595 nm with the full width of half maximum 90 nm under UV 337 nm excitation, and the brightness as high as the corresponding bulk pure cubic ZnS:Mn phosphor. In comparison with the bulk ZnS:Mn phosphor these nanocrystals have clearly high luminescent efficiency with its luminescent decay time at least 5 orders of magnitude faster. It means that the oscillator intensity of luminescent centers in ZnS:Mn nanocrystal enhances at least 5 orders of magnitude than that in corresponding bulk ZnS:Mn. The local measurement of this luminescent efficiency by Scanning near-field optical microscope allows discover a hot luminescence in these nanocrystals.

Keywords

nanocrystal phosphors, ZnS:Mn, hot luminescence, ACTFEL, Scanning near-field optical microscopy

Released

13.11.2006

Publisher

Vutium Brno

Location

Brno

Pages from

84

Pages to

84

Pages count

1

BibTex


@misc{BUT60407,
  author="Lubomír {Grmela} and Pavel {Tománek}",
  title="Near-field investigation of ZnS:Mn nanocrystal phosphors in thin-film electroluminescent device",
  annote=". A study of the luminescence characteristics of nanostructured ZnS:Mn ACTFEL devices is presented. Nanocrystal ZnS:Mn phosphor has been prepared by sol method using inorganic materials at room temperature. The nanocrystal of ZnS:Mn has cubic crystal structure with average 3 nm of particle size, emitting bright orange light at peak wavelength 585-595 nm with the full width of half maximum 90 nm under UV 337 nm excitation, and the brightness as high as the corresponding bulk pure cubic ZnS:Mn phosphor. In comparison with the bulk ZnS:Mn phosphor these nanocrystals have clearly high luminescent efficiency with its luminescent decay time at least 5 orders of magnitude faster. It means that the oscillator intensity of luminescent centers in ZnS:Mn nanocrystal enhances at least 5 orders of magnitude than that in corresponding bulk ZnS:Mn. The local measurement of this luminescent efficiency by Scanning near-field optical microscope allows discover a hot luminescence in these nanocrystals.",
  address="Vutium Brno",
  chapter="60407",
  institution="Vutium Brno",
  year="2006",
  month="november",
  pages="84--84",
  publisher="Vutium Brno",
  type="abstract"
}