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9 759 (0,415s)

Result

Defect aggregates in the Sr2MgSi2O7 persistent luminescence material

The crystal and electronic structure of the Eu2+ doped and defect containing Sr2MgSi2O7 persistent luminescence material were studied using the density functional theory. The effect of charge compensation induced by the rare earth c...

BM - Fyzika pevných látek a magnetismus

  • 2011
  • Jx
  • Link
Result

Experiments with the so called phosphorescence: Persistent luminescence as thermoluminescence at ambient temperature

Light-excited luminescence with very slow decay (used often in safety signs and instrument dials) is incorrectly called phosphorescence. In reality, it is persistent luminescence with lifetime in the order of minutes and ev...

BH - Optika, masery a lasery

  • 2016
  • D
Result

Synchrotron radiation investigations of the Sr2MgSi2O7:Eu2+,R3+ persistent luminescence materials

The electronic structure of Sr2MgSi2O7:Eu2+,R3+ persistent luminescence materials were studied with thermoluminescence and different synchrotron radiation spectroscopies. Theoretical calculations using the density functional theory ...

BM - Fyzika pevných látek a magnetismus

  • 2009
  • Jx
Result

Persistent luminescence - Quo vadis?

The present status of the persistent luminescence mechanisms is reviewed and the remaining unsolved details are discussed in the Eu2+-doped and rare earth co-doped aluminates MAl2O4 and disilicates M2MgSi2O7. M:Ca, Sr, Ba)....

BM - Fyzika pevných látek a magnetismus

  • 2009
  • Jx
Result

Optical energy storage properties of Sr2MgSi2O7:2+,R3+ persistent luminescence materials

The details of the mechanism of persistent luminescence were probed by investigating the trap levels of Sr2MgSi2O7:Eu2+,R3+ with thermoluminiscene measurements and ab-initio calculations....

BM - Fyzika pevných látek a magnetismus

  • 2011
  • Jx
  • Link
Result

Synchrotron radiation spectroscopy of rare earth doped persistent luminescence materials

The electronic structure of the polycrystalline CaAl2O4:Eu2+,Ce3+ persistent luminescence materials were studied with X-ray absorption and UV?VUV emission and excitation spectroscopy by using synchrotron radiation.Theoretical calcul...

BM - Fyzika pevných látek a magnetismus

  • 2009
  • Jx
Result

Fabrication and characterizations of Eu2+-Dy3+ co-doped SrAl2O4 ceramics with persistent luminescence

(Sr0.97Eu0.01Dy0.02)Al2O4 persistent luminescence (PersL) ceramics were, microstructure, luminescence properties, trap state, and PersL performance of HIP post. For the (Sr0.97Eu0.01Dy0.02)Al2O4 PersL ceramics after HIP pos...

Condensed matter physics (including formerly solid state physics, supercond.)

  • 2023
  • Jimp
  • Link
Result

Solid-state synthesis and luminescence of europium doped and co-doped with dysprosium SrAl4O7

of dopants concentration and molar ratio on the luminescent properties of strontium aluminate was studied. All of the samples exhibited persistent luminescence luminescence emission at 490 nm while co-doping with ...

Inorganic and nuclear chemistry

  • 2020
  • Jimp
  • Link
Result

Isolated defects in Sr2MgSi2O7 : A DFT study

The modifications in the crystal and electronic structure due to the Eu2+ luminescent centre and isolated vacancies in the Sr2MgSi2O7:Eu2+ persistent luminescence material were calculated using the density functional theory...

BM - Fyzika pevných látek a magnetismus

  • 2012
  • Jx
  • Link
Result

Coating persistent luminescence nanoparticles with hydrophilic polymers for in vivo imaging

Persistent luminescence nanoparticles (PLNPs) are innovative nanomaterials highly useful for bioimaging applications. Indeed, due to their particular optical properties, i.e., the ability to store the excitation energy before slowly...

Polymer science

  • 2020
  • Jimp
  • Link
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