Bertha, Anne

Hadermann, Joke

Meert, Katrien

Poelman, Dirk

Smet, Philippe

English

Ghent University Academic Bibliography

# correspondence author katrien.meert@ugent.be  Use of CaGd2(1-x)Eu2x(WO4)4 scheelite phosphors in thermometry  Katrien W. Meerta#, Philippe F. Smeta , Anne Berthab, Joke Hadermannb, Dirk Poelmana,   aLumiLab, Department of Solid State Sciences, Ghent University, Krijgslaan 281-S1,9000 Gent, Belgium Center for Nano- and Biophotonics (NB Photonics), Ghent University, Gent, Belgium bEMAT, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium   Scheelites are ABO4 compounds (A = alkali, alkaline-earth or rare-earth element; B = Mo, W) with the best known scheelite being CaWO4. In scheelite related compounds there is a partial substitution of the A and/or B cation  and crystals can be aperiodic in 3-dimensional space. The advantage of this so-called incommensurate modulation is that varying the composition results in various order patterns which yield a wide range of materials with often good optical properties, good stability and a relatively simple preparation method [1]. Here, the optical properties of CaGd2(1-x)Eu2x(WO4)4 are investigated. The very specific temperature-dependent luminescence of the high Eu-concentration samples allows the use of these materials as thermographic phosphor. Due to energy transfer in the material, the ratio of the line intensities of the Eu emission can be used as a higly sensitive thermometer in the range form 250 K to at least 500 K.  A    set-up was developed to prove the applicability of the material.   [1] C. Guo, H.K. Yang, and J.-H. Jeong, Preparation and luminescent properties of the phosphor MGd2(MoO4)4 :Eu3+. Journal of Luminescence, 2010. 130: p. 1390-1393.   

Use of CaGd2(1-x)Eu2x(WO4)4 scheelite phosphors in thermometry

https://biblio.ugent.be/publication/4398982/file/4398983.pdf

Use of CaGd2(1-x)Eu2x(WO4)4 scheelite phosphors in thermometry

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Ghent University Academic Bibliography