Translated Title
Influence of Microstructure Modulation of Er~（3＋）-Doped Al_2O_3 on the Photoluminescence Performance
Translated Abstract
The Al2O3 powders doped with different mole fractions of Er3＋ and those co-doped with Er3＋ ion of 0.5% and different mole fractions of Y3＋ ion were prepared by a sol–gel method.Due to the radius difference between Y3＋ ion and Al3＋ ion,the micro-structure of Al2O3 could be modulated by co-doping with different mole fractions of Y3＋.The structure of the powder samples were determined by X-ray diffraction and transmission electron microscopy,respectively,and the photoluminescence（PL） characteristics were analyzed via the PL spectra.The results show that the primary phase of Y3＋ and Er3＋ co-doped Al2O3 samples is δ-Al2O3.The lattice defects,the PL intensity,spectral width and PL lifetime of samples increased with increasing the doping quantity of Y3＋ ion.The PL property of Er3＋-doped Al2O3 powders was improved effectively via the modulation of the microstructure environment of Er3＋ by doping with different quantities of Y3＋ ion.
Translated Keyword
alumina
erbium
photoluminescence
sol–gel
structure modulation
yttrium
Access Number
WF:perioarticalgsyxb201203028
