| 1 | An impact of sintering temperature and doping level on structural and spectral properties of Eu-doped strontium aluminium oxide显示文摘In the present work,a sol-gel method was employed to prepare nanosized SrAl2O4 powders doped with Eu3+ ions.The raw nano-materials were thermally treated at 900 to 1100 oC for 3 h.The XRD analysis demonstrated that the powders were single-phase nanopowders with high crystallite dispersion.Our studies were focused on relating the luminescence properties of the Eu3+ dopant to the NC(nanocrystal-lites) size.This was achieved by varying the calcinations temperature between 900 and 1100 oC.The average NC size varied accordingly be-tween ~36 and ~75 nm.We found that size effect manifested mainly in the expansion of the cell volume and broadening of XRD peaks as in-dicated by Rietveld analysis.Moreover the emission and excitation spectra,although typical for Eu3+ ions,demonstrated some degree of variability with calcinations temperature and doping concentration.To explain these differences a detailed analysis of luminescence spectra by the Judd-Ofelt theory was performed. | R.J.Wiglusz T.Grzyb A.Watras P.J.Deren S.Lis W.Strek | 2011 | Journal of Rare Earths2011，29，12： | 0 |
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