Line-shape analysis and simulation of Er3+ photoluminescence spectra in erbium-stabilized nanocrystalline zirconia structures

Peculiarities of the near-infrared and visible up-conversion spectra nanocrystalline (Er2O3)x (ZrO2)1-x have been studied. It is shown that for samples with 0.026 < x 0.143 photoluminescence Er3+ are defined a by similar erbium environment in spite different symmetry host ZrO2 matrix. The low temperature room emission bands spectral range 4I13/2 → 4I15/2 transition measured interpreted terms multi-electron molecular orbitals cluster model developed case nanocrystal structures. role intra-manifold relaxation caused spatial confinement effects erbium-stabilized zirconia discussed.