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

Journal

Journal of Luminescence Elsevier

Book Volume: 226

Article Number: 117487

DOI: 10.1016/j.jlumin.2020.117487

Abstract

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.

Authors with CRIS profile

Ellen Elisabeth Hertle Lehrstuhl für Technische Thermodynamik (LTT) Jonas Bollmann Lehrstuhl für Technische Thermodynamik (LTT) Simon Aßmann Lehrstuhl für Technische Thermodynamik (LTT) Violetta Kalancha Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Andres Osvet Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Miroslaw Batentschuk Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Stefan Will Lehrstuhl für Technische Thermodynamik (LTT) Lars Zigan Lehrstuhl für Technische Thermodynamik (LTT)

How to cite

APA:

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. https://doi.org/10.1016/j.jlumin.2020.117487

MLA:

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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