Rare earth-based phosphors have been studied as materials for optical devices due the low doping needed to achieve luminescence, wide band-gap, and high thermal and chemical stability. They exhibit high efficiencies in induced photoluminescence procedures. Particularly, Y2O3:Eu3+ phosphor shows a strong red emission for auspicious use in display devices such as flat screen televisions or fluorescent tubes. However, the intensity of the 5D0→7F2 emission at 613 nm depends on different synthesis factors, such as doping, temperature, or the method of synthesis itself, and upon thin film deposition the emission intensity reduces significantly. In our experiments, we studied the effects of the annealing temperature in a range of 550-1150 °C on the photoluminescence properties of combustion-synthetized Y2O3:Eu3+ phosphors. Then, we used it in a thin-film based flat panel display and studied the enhancement on the intensity of emission by Ag nanoparticle doping, the latter in order to deal with the decrease in the intensity by the thin-filming processing, so that it can regain its original emission intensity.

Thin-film flat panel display based on Y2O3:Eu3+ doped with Ag nanoparticles

256th National Meeting (2018)

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