Thermographic properties of Eu3+- and Sm3+-doped Lu2O3 nanophosphor
Medić, Mina M.
Nikolic, Marko G.
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Samples of Lu2O3:Eu3+ (3 at. % Eu) and Lu2O3:Sm3+ (1 at. % Sm), were prepared via the polymer complex solution method using poly(ethylene glycol) as the fuel and as nucleation agent for crystallization process. Knowing that lutetium oxide has high chemical stability and temperature resistance, in this study, the possibility for its application in high-temperature phosphor thermometry was investigated. This non-contact technique uses the thermal dependence of phosphor fluorescence to measure temperature remotely. The structural and morphological properties were investigated by X-ray powder diffraction (XRPD) analysis and transmission electron microscopy (TEM). The obtained results confirmed that this synthesis yields the desired crystalline structure with particle sizes in the range from 30 to 50 nm. Photoluminescence emission measurements were recorded in the temperature range from ambient up to 873 K. The obtained results demonstrated the performance of Eu3+- and Sm3+-doped Lu2O3 as h...igh temperature thermographic phosphors of very good sensitivity.