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Photoluminescent materials
with long afterglow was developed as a base of non-radioactive
luminescent paints used for various signs and directions, means
providing safe traffic, marking of roads, important devices
and control elements, microcrack and microdefect revealing (paste),
wall painting, in art and polygraphy, office and shop window
decoration etc., as well as a filler for plastics, films, artificial
fibres, leathers, rubbers, textiles, ceramics and various articles
on their base (e.g. clothes, bijouterie, toys, souvenirs, switches,
special means for equipment of police, rock-savers and fire-brigades
and other purposes).
Sources of excitation of emission
(fluorescence) these of photoluminescent materials may be daylight,
luminescent and incandescent lamps, UV-emitters. They convert
UV- and visible light into various coloured luminescent emission
with afterglow duration from minutes to several hours.
The phosphors can work within temperature
range from -50°C to +1000°C and are stabile in different environment
conditions.
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