An effective nanostructured green phosphor Zn2SiO4:Mn2+ prepared by sol-gel method
https://doi.org/10.17586/2220-8054-2018-9-4-507-512
Abstract
A nanostructured willemite doped with manganese (Zn2SiO4:Mn2+) was synthesized by sol-gel method followed by high-temperature annealing. Prepared Zn2SiO4:Mn2+ 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 Mn2+ emission. It was found that the emission decay curves of willemite becomes non-exponential with increasing of manganese content. Zn2SiO4:Mn2+ reveals long-lasting phosphorescence up to 45 ms. Absolute quantum yield of Zn2SiO4:Mn2+ reaches 47 % at 0.1 at. % of Mn2+. The luminescence concentration quenching effect at Mn2+ concentration higher than 1 at % is observed.
Supporting agencies: This work was supported by Act 211 Government of the Russian Federation, contract No 02.A03.21.0006. The authors are grateful to Minobrnauki initiative project No 16.5186.2017/8.9.
About the Authors
K. A. Sergeeva
Ural Federal University
Russian Federation
Russian Federation
Mira, 19, Ekaterinburg, 620002
A. A. Sergeev
Far-Easten Federal University
Russian Federation
Russian Federation
Sukhanova, 8, Vladivostok, 690091
A. A. Rempel
Ural Federal University; Institute of Metallurgy, Ural Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Mira, 19, Ekaterinburg, 620002
Amundsena, 101, Ekaterinburg, 620016
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Review
For citations:
Sergeeva K.A., Sergeev A.A., Rempel A.A. An effective nanostructured green phosphor Zn2SiO4:Mn2+ prepared by sol-gel method. Nanosystems: Physics, Chemistry, Mathematics. 2018;9(4):507-512. https://doi.org/10.17586/2220-8054-2018-9-4-507-512
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