Exitation Luminescence of Microparticles SrAl2O4: (Еu2+, Dy3+) in a Liquid at the Phase Transition Liquid – Crystal
A. A. Banishev, A. F. Banishev
Current Journal of Applied Science and Technology · pp. 1–6 · Published 22 Nov 2016
10.9734/BJAST/2016/29871Abstract
An investigation was conducted of mechanoluminescence of aqueous suspension of SrAl2O4:(Eu2+, Dy3+) phosphor fine-disperse powder in the process of water crystallization (liquid-crystal phase transition) under fast cooling in liquid nitrogen. At the instant of water crystallization, the suspension revealed a glow which was associated with excitation of mechanoluminescence of the phosphor microparticles under mechanical stresses caused by crystallization of water. The phosphorescence and mechanoluminescence of SrAl2O4:(Eu2+, Dy3+) phosphor microparticles were studied in the photopolymer matrix with temperature variation from the room to liquid nitrogen temperature. The phosphor mechanoluminescence was shown to weakly change on temperature lowering, while the photoluminescence decayed fast.
Cited by 2
A. A. Banishev, A. F. Banishev · Inorganic Materials: Applied Research · 2018
A. F. Banishev, A. A. Banishev · Inorganic Materials: Applied Research · 2019
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