Combustion synthesis and up-conversion luminescence of La₂O₂S:Er³⁺,Yb³⁺ nanophosphors

The main goal of this work is to conjugate two independent techniques of TEM-EDX and optical spectroscopy, which is rare, for the localization of Yb 3+ and Er 3+ rare earth ions and

First-report on Mesozoic eclogite-facies metamorphism preceding Barrovian overprint from the western Rhodope (Chalkidiki, northern Greece).e.

oxidation states of Pu. 2,3,S1, S2) were Pu(IIIIV), Pu(IIIV), Pu(IIIVI), Pu(IVV), Pu(IVVI) and Pu(VIV).Theprimary motivations for this work werereactions that convert

In the barrier discharge setup we observed the same delay phenomena for the FNS and.. SPS streamer emissions. Moreover, due to the larger electrode gap of 1 mm, we could observe

When Eu 3+ and Tb 3+ were co-doped into Gd 2 O 2 CN 2 , an efficient energy transfer from Tb 3+ to Eu 3+ occurred and thus by only increasing the doping concentration of Eu 3+

L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des

This estimate is supported by the very good agreement with the absolute cross section measured for the NH + + H + + N reac- tion channel, multiplied by the corresponding branching

While the spectral shape and locations of excitation and emission peaks do not vary with the doping concentration of Eu 3+ ions, the photoluminescence