1 Section of Chemistry, The Faculty of Engineering and Science, Aalborg University, VBN2 Department of Chemistry and Bioscience, The Faculty of Engineering and Science, Aalborg University, VBN3 Inorganic Amorphous Materials, The Faculty of Engineering and Science, Aalborg University, VBN4 The Faculty of Engineering and Science (ENG), Aalborg University, VBN5 Qilu University of Technology6 Qilu University of Technology
In the paper we show that the Yb3+/Er3+ codoped transparent nanocrystal containing phosphosilicate glasses can be obtained by the melt-quenching devitrification approach. We find that the type of alkali oxides has a strong impact on the crystallization in phosphosilicate melts during cooling. The glasses exhibit high efficient up-conversion luminescence of Er3+ at 521, 545 and 655 nm under the 980 nm excitation. However, the trend of intensity change of the red emission with varying the crystal type and content is different from that of the green emission. We clarify how the Yb3+ → Er3+ energy transfer and the intensified distorted symmetry of local structure of active ions influence the up-conversion luminescence.
Journal of Non-crystalline Solids, 2014, Vol 383, p. 141-145
Main Research Area:
XIII International Conference on Physics of Non-Crystalline Solids, 2014