Optimization of synthesis and compositional parameters of magnesium germanate and fluoro-germanate thermographic phosphors

Journal article
(Original article)


Publication Details

Author(s): Ali A, Khanzada LS, Hashemi A, Polzer C, Osvet A, Brabec C, Batentschuk M
Journal: Journal of Alloys and Compounds
Publication year: 2018
Journal issue: 734
Pages range: 29-35
ISSN: 0925-8388
Language: English


Abstract


Various documented formulations of magnesium germanate and flouro-germanate were synthesized by conventional solid state method at various temperatures to find out optimal synthesis conditions for maximum luminescence intensity. Relative efficiency of luminescence intensity and thermal stability of luminescence of these formulations is then discussed with respect to the commercially available phosphor. Mg28Ge7.5O38F10:Mn4+ was found to be the most efficient when synthesized at 1150 °C in air and has a comparable efficiency with respect to commercial sample. Photoluminescence intensity with increasing temperature was measured till 500 °C; the samples showed persistent emission till 300 °C. Relatively, samples with MgF2 give stronger emission at high temperatures if added in proper ratio.



FAU Authors / FAU Editors

Ali, Amjad
Institute Materials for Electronics and Energy Technology (i-MEET)
Batentschuk, Miroslaw PD Dr.-Ing.
Institute Materials for Electronics and Energy Technology (i-MEET)
Brabec, Christoph Prof. Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Khanzada, Laraib Sarfraz
Institute Materials for Electronics and Energy Technology (i-MEET)
Osvet, Andres Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)


External institutions with authors

Bayerisches Zentrum für Angewandte Energieforschung e.V. (ZAE Bayern)


Research Fields

Neue Materialien und Prozesse
Research focus area of a faculty: Technische Fakultät


How to cite

APA:
Ali, A., Khanzada, L.S., Hashemi, A., Polzer, C., Osvet, A., Brabec, C., & Batentschuk, M. (2018). Optimization of synthesis and compositional parameters of magnesium germanate and fluoro-germanate thermographic phosphors. Journal of Alloys and Compounds, 734, 29-35. https://dx.doi.org/10.1016/j.jallcom.2017.10.259

MLA:
Ali, Amjad, et al. "Optimization of synthesis and compositional parameters of magnesium germanate and fluoro-germanate thermographic phosphors." Journal of Alloys and Compounds 734 (2018): 29-35.

BibTeX: 

Last updated on 2018-02-08 at 09:36