Abstract
Green and red up-conversion luminescence spectra related to 2H11/2,4S3/2 → 4I15/2 and 4F9/2 → 4I15/2 transitions of trivalent erbium in Er3+/Yb3+ co-doped lead silicate glasses have been studied. The luminescence intensity ratio for bands due to the 2H11/2 → 4I15/2 and 4S3/2 → 4I15/2 transitions of Er3+ was determined and temperature sensitivity parameters were calculated. The maximal temperature sensitivities for Er3+/Yb3+ co-doped glass samples depend critically on rare earth ion concentrations. Based on gathered data it was concluded that Er3+/Yb3+ co-doped lead silicate glasses are promising for optical temperature sensing.
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