Geodesic
An effective nanostructured green phosphor Zn$_2$SiO$_4$:Mn$^{2+}$ prepared by sol-gel method
Nanosistemy: fizika, himiâ, matematika, Tome 9 (2018) no. 4, pp. 507-512.

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A nanostructured willemite doped with manganese (Zn$_2$SiO$_4$:Mn$^{2+}$) was synthesized by sol-gel method followed by high-temperature annealing. Prepared Zn$_2$SiO$_4$:Mn$^{2+}$ is characterized by average particle size of 100 nm, narrow particle size distribution, and high crystallinity. Under UV-excitation nanostructured willemite shows an intensive photoluminescence at 520 nm corresponded to activator Mn$^{2+}$ emission. It was found that the emission decay curves of willemite becomes non-exponential with increasing of manganese content. Zn$_2$SiO$_4$:Mn$^{2+}$ reveals long-lasting phosphorescence up to 45 ms. Absolute quantum yield of Zn$_2$SiO$_4$:Mn$^{2+}$ reaches 47 % at 0.1 at. % ofMn$^{2+}$. The luminescence concentration quenching effect at Mn$^{2+}$ concentration higher than 1 at % is observed.
Keywords: manganese, quantum yield.
Mots-clés : willemite, photoluminescence 
@article{NANO_2018_9_4_a9,
     author = {K. A. Sergeeva and A. A. Sergeev and A. A. Rempel},
     title = {An effective nanostructured green phosphor {Zn}$_2${SiO}$_4${:Mn}$^{2+}$ prepared by sol-gel method},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {507--512},
     publisher = {mathdoc},
     volume = {9},
     number = {4},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2018_9_4_a9/}
}
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K. A. Sergeeva; A. A. Sergeev; A. A. Rempel. An effective nanostructured green phosphor Zn$_2$SiO$_4$:Mn$^{2+}$ prepared by sol-gel method. Nanosistemy: fizika, himiâ, matematika, Tome 9 (2018) no. 4, pp. 507-512. http://geodesic.mathdoc.fr/item/NANO_2018_9_4_a9/