Ga-modified YAG:Pr3+ dual-mode tunable luminescence thermometers

The temperature determination using luminescent materials is nowadays considered the perspective remote technique for gauging, despite few examples reported so far combining wide operating range with satisfying relative thermal sensitivity and uncertainty values. In this paper, we study Y3(Al,Ga)5O12:0.1%Pr phosphors controlled Ga:Al composition to deliberately affect their properties. We demonstrate that energy barrier quenching of 5d-4f luminescence can be effectively tailored, yielding fine tune thermometric parameters these phosphors. By exploiting time-resolved time-integrated approaches show thermometers cover 17–700 K a maximum up 3.6%·K−1 as lower 0.02 K. For each sample, readout distinct compared illustrating performance should also consider error between calculated measured temperatures, besides uncertainty.