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Photophosphors
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Are excited by UV, visible or IR lights and intended for the use in luminescent and advertising lamps, luminescent design, thermography, polygraphy, polymeric compositions, emergency and signal information systems in twilight and night-time. The phosphors can be of 30 different colors and allow one to make sports and special clothes.
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Table 1. Characteristics
of photophosphors for luminescent and advertising lamps (LP series)
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| Mark |
Color |
Color
coordinates |
Average
particle
size d50, microns |
| X |
Y |
| LPB-6 |
dark blue |
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0,14 |
0,08 |
4-6 |
| LPB-6-1 |
dark blue - blue |
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0,14 |
0,06 |
6-8 |
| LPBG-6 |
sea water color |
 |
0,22 |
0,32 |
8-12 |
| LPG-7 |
green-yellow |
 |
0,34 |
0,60 |
4-12 |
| LPG-6 |
green |
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0,30 |
0,58 |
4-12 |
| LPR-3 |
orange-red |
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0,64 |
0,35 |
4-6 |
| LPR-4 |
red |
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0,65 |
0,34 |
8 |
| LPY-3 |
yellow |
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0,45 |
0,45 |
8 |
| LPR-25 |
red |
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0,62 |
0,35 |
4 |
| PUL-1 |
orange-red |
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0,64 |
0,35 |
4-6 |
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"Svetlachok" long-persistence photophosphors (LDP
1,2,3 series)
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- can accumulate giant light sums (up to 1022 quantum/cm3) under natural or artificial illumination;
- can release accumulated light sums during 8-12 hours after stopping an outer illumination;
- during twenty four hours provide for luminescence at a level of a light of the full moon (0.1 lx) in night-time.
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"Svetlachok" light-accumulators are designed for use in:
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- independent alarm lighting and signal systems;
- warning, pointing, evacuation, fire, and other signals;
- mines, tunnels, overbridges , and main pipelines;
- metro, escalators, passages , excursion caves;
- drilling platforms and rigs;
- for illumination of tall houses, bridges, tower-coolers, and chimney stacks;
- for road marking , in the production of road signs and information boards;
- for vehicles' identification marks;
- for designation of transit beacons;
- for outdoor advertising;
- for polygraph and textile products;
- for special cloths and rescue floating means;
- for decorative cosmetics, children's toys, and New-Year's tree decoration.
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Table 2.
Characteristics
of long-persistence photophosphors.
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| Mark |
Color |
Starting persistence after 0,1
min, Cd/m2 |
Persistence after 100 min,
mcd/m2 |
Persistence after 1000 min,
mcd/m2 |
Average particle size d50,
microns |
| SLPP-2* |
green |
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>5 |
16 |
0,3 |
8-10 |
| SLPP-3* |
green |
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>10 |
10 |
1,0 |
15-20 |
| SLPP-3 |
green-blue |
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>3 |
16 |
2,0 |
15-20 |
| SLPP-2 |
yellow-orange |
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>1 |
4 |
0,5 |
15-20 |
| SLPP-2 |
orange |
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>1 |
3 |
0,1 |
15-20 |
| SLPP-1 |
red |
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? |
0,5 |
0,05 |
8-10 |
| Phosphors are proof against water, organic solvents, polymeric dyes. Thermo- and atmosphere-stable. |
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| Fig.1. Decay of the LDP-2 phosphors upon excitation by an incandescent lamp (source A) at an illumination of 200 lx. |
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Table 3. Anti-Stokes
phosphors and phosphors for light-emitting diodes
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| Mark |
Color |
Color coordinates |
Average particle
size d50, microns |
| X |
Y |
| LPG-IR-3 |
green |
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0,35 |
0,58 |
4-6 |
| LPR-IR-3 |
red |
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0,60 |
0,38 |
4-6 |
| LPG-7 |
white |
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0,32 |
0,31 |
1-3 |
| LPGR-5 |
white |
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0,34 |
0,33 |
1-3 |
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Phosphors for polymeric compositions (light-transformers)
"PUL"
light-transformers
additives:
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- is used in the production of
"Urozhay" strengthened light-stabilized third-generation "Red" film for hot-beds;
- is universal , i.e. is used in the production of not only light-transforming polyethylene agrofilms, but other carrying polymeric covers, covering materials , glasses, lacquers, etc.
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Table 4. Light-transforming additives (PUL series) to polymeric materials
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| Mark |
Color |
Color hue,
nm |
Relative efficiency,
% |
Average particle
size d50, microns |
| PUL - 1 |
red |
|
628 |
100 |
5-6 |
| PUL - 1A |
red |
|
628 |
>150 |
3-5 |
| PUL - 1B |
red |
|
628 |
>200 |
3-5 |
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