Bertha, Anne

Hadermann, Joke

Meert, Katrien

Poelman, Dirk

Smet, Philippe

English

Ghent University Academic Bibliography

# correspondence author katrien.meert@ugent.be  Luminescence of CaGd2(1-x)Eu2x(WO4)4 scheelites  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 most well-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]. Since the order directly affects the position of the luminescence centers, and thus the efficiency of the phosphor, there could be a relation between this order and the optical properties. Here, the  main focus will be on the optical properties of CaGd2(1-x)Eu2x(WO4)4. The temperature-dependent luminescence and decay pathways of the materials are investigated over a wide concentration range. In this way the potential of the materials as LED-phosphors or even as thermometric phosphors are evaluated.      [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.   Figure 1 Emissionspectrum of CaGdEu(WO4)4 

Luminescence of CaGd2(1-x)Eu2x(WO4)4 scheelites

https://biblio.ugent.be/publication/4238848/file/4239085.pdf

Luminescence of CaGd2(1-x)Eu2x(WO4)4 scheelites

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Ghent University Academic Bibliography