Investigation of emission properties of Tm3+:Y2O3 transparent ceramic

A transparent and emitting ceramic of Y2O3 doped with 6% Tm 3+ ions is fabricated by vacuum sintering with ZrO2.Absorption, photoluminescence (PL), and PL excitation (PLE) spectra are investigated in a spectral range of 200 to 2 100 nm at various temperatures between 296 and 12 K.Intense emission band appears at 450 to 465 nm in the visible range.Near-infrared emission bands are observed at 1 200 to 1 300 nm and 1 400 to 1 550 nm, with intense peaks at 1 270, 1 450, and 1 523 nm.The luminescence mechanisms and potential applications of the emissions are discussed with the help of Judd-Ofelt theory and PLE spectra.