Characterization of the phosphor (Sr,Ca)SiAlN3: Eu2+ for temperature sensing

Hertle EE, Bollmann J, Aßmann S, Kalancha V, Osvet A, Batentschuk M, Will S, Zigan L (2020)

Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2020


Book Volume: 226

Article Number: 117487

DOI: 10.1016/j.jlumin.2020.117487


Laser-induced phosphorescence based on luminescent particles is a suitable technique for remote temperature sensing. The luminescence characteristics of the phosphor (Sr,Ca)SiAlN3:Eu2+ (”SCASN”) were investigated regarding the suitability of the material for phosphor thermometry. The phosphor has a high quantum efficiency, a very broad excitation band, an emission peak centered at about 620 nm and a short lifetime of less than 1μs, which makes it promising for thermometry measurements. After excitation at 532 nm, the luminescence emission reveals a blue shift with increasing temperature, which can be used for temperature calibration based on the two-color intensity ratio method. The excitation and emission characteristics are favorable for measurements in environments containing fuels and oils, which tend to fluorescence after UV-excitation. The phosphor allows for measurements up to 800 K, with a quenching temperature of 530 K. Spectral characteristics are presented for both bulk powder and a surface coating. For the former, a significant shift in the position of the emission peak is observed, which is most probably due to distinct re-absorption. A change in excitation laser fluence slightly affected the luminescence emission spectrum of both bulk material and coating and thus requires consideration in temperature determination.

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Hertle, E.E., Bollmann, J., Aßmann, S., Kalancha, V., Osvet, A., Batentschuk, M.,... Zigan, L. (2020). Characterization of the phosphor (Sr,Ca)SiAlN3: Eu2+ for temperature sensing. Journal of Luminescence, 226.


Hertle, Ellen Elisabeth, et al. "Characterization of the phosphor (Sr,Ca)SiAlN3: Eu2+ for temperature sensing." Journal of Luminescence 226 (2020).

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