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The influence of temperature-time annealing, fluxes and surface treatment of grains on the optical-luminescent properties of crystalline phosphorus Y2O2S:Eu
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Paper Abstract

In the present work discusses the factors affecting the brightness and intensity of the photoluminescence of the red phosphor glow based on yttrium oxysulfide activated by europium. The energy during cathode excitation is transferred from the surface of the grain to it is volume either due to the excitation of bulk plasmons (excitation 100 –400 V) or by the migration of minority charge carriers at low voltage (less than 100 V) excitation. With such mechanisms of energy transfer, the optimum grain size of phosphorus is about 1 micron. Therefore, surface treatment was carried out with modifying additives molybdate and ammonium tungstate grains of Y2O2S:Eu phosphors, which makes it possible to obtain powders with a spherical shape of grains not larger than 3-5 μm.

Paper Details

Date Published: 3 June 2019
PDF: 5 pages
Proc. SPIE 11066, Saratov Fall Meeting 2018: Laser Physics, Photonic Technologies, and Molecular Modeling, 110661I (3 June 2019); doi: 10.1117/12.2521536
Show Author Affiliations
Tatiana S. Ponomaryova, Saratov State Univ. (Russian Federation)
Tatiana A. Akmaeva, Saratov State Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 11066:
Saratov Fall Meeting 2018: Laser Physics, Photonic Technologies, and Molecular Modeling
Vladimir L. Derbov, Editor(s)

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