Temperature dependence of photoluminescence emission characteristics in a natural fluorite

Ogundare, F.O.; Balogun, F.A.; Hussain, L. A.

doi:10.1007/s00710-006-0175-z

Cited by 1 publication

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“…The existence of REE will not only change the color of fluorite but also lead to the fluorescence and phosphorescence of fluorite [ 12 , 13 , 14 , 15 ]. Studies have shown that in addition to the common blue fluorescence, some fluorites also show fluorescence of other colors, such as yellow, yellow-green, green, and red [ 16 , 17 , 18 , 19 , 20 ]. The discussion on the luminescence mechanism of fluorite has continued to be in-depth [ 21 , 22 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Mineralogical Characteristics and Luminescent Properties of Natural Fluorite with Three Different Colors

et al. 2022

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Fluorite is rich in mineral resources and its gorgeous colors and excellent luminescence characteristics have attracted the attention of many scholars. In this paper, the composition, structure, luminescent properties, and the potential application value of three fluorites with different colors and are systematically analyzed. The results show that REE and radioactive elements have effects on the structure, color, and luminescence of fluorite. Radioactive elements Th and U will aggravate the formation of crystal defects in fluorite. The green color is related to Ce3+ and Sm2+. Colloidal calcium and F− center are responsible for the blue-purple color of fluorite. There are many luminescent centers, such as Eu, Pr, Dy, Tb, Er, and Sm, in fluorite. The blue fluorescence is mainly caused by 4f7-4f65d1 of Eu2+. In addition, it is found that fluorite has certain temperature sensing properties in the temperature range of 303–343 K.

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