6533b85bfe1ef96bd12bbd08

RESEARCH PRODUCT

The time-resolved luminescence characteristics of Ce and Ce/Pr doped YAG ceramics obtained by high pressure technique

Larisa GrigorjevaKrisjanis SmitsPawel GluchowskiDonāts MillersWitold LojkowskiA. Swiderska-srodaWieslaw StrekAnatolijs Sarakovskis

subject

PhotoluminescenceMaterials scienceOrganic ChemistryDopingAnalytical chemistrySinteringMineralogyAtomic and Molecular Physics and OpticsGrain sizeElectronic Optical and Magnetic MaterialsInorganic Chemistryvisual_artvisual_art.visual_art_mediumGrain boundaryCeramicElectrical and Electronic EngineeringPhysical and Theoretical ChemistryAbsorption (electromagnetic radiation)LuminescenceSpectroscopy

description

Abstract Transparent Ce and Ce/Pr doped YAG ceramics were prepared under high pressures (up to 8 GPa) and relative low temperature (450 °C). Grain size of the ceramics is less than 50 nm. However unknown defects or disorders strains on grain boundaries caused the additional absorption in these ceramics. The luminescence intensity, spectra and the decay time dependence on pressure applied during ceramic preparation were studied. Concentration of some intrinsic point defect was reduced under the high pressure applied for sintering process. It is shown that formation time of the excited state of Ce luminescence depends on the pressure applied during ceramic sintering.

yearjournalcountryeditionlanguage
2012-04-01Optical Materials
https://doi.org/10.1016/j.optmat.2011.05.023