Abstract

This paper discusses several different methods of synthesizing SrS:Pr phosphor. It is shown that the brightest photoluminescence can be obtained by using strontium sulfide as the main starting substance and doping it with PrF<sub>3</sub> in the presence of NaCl flux by roasting the mix in a dry nitrogen atmosphere with an addition of sulfur vapor. It is established that, to obtain luminescence of the SrS:Pr samples, it is necessary to anneal them in vacuum. The praseodymium concentration in the mix, the temperature, and the vacuum-annealing time were optimized, and this made it possible to maximize the photoluminescence brightness and achieve the highest perfection of the phosphor crystals. The synthesized SrS:Pr phosphor possesses white luminescence.

© 2011 OSA

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