Silicate long afterglow phosphors
Silicate series long afterglow phosphors have become a kind of important energy materials and energy-saving materials because of their excellent luminescence properties. They have longer afterglow time and more stable chemical properties.
Silicate series long lasting phoshorescent powder
Silicate series long lasting phoshorescent powder also called long lasting photoluminescent pigment, long lasting fluorescent powder, long afterglow luminescent powder, phosphors etc.
Silicate series long afterglow phosphors have become a kind of important energy materials and energy-saving materials because of their excellent luminescence properties. They have longer afterglow time and more stable chemical properties.
Key words: silicate phosphors, long afterglow luminescent powder, rare earth phosphors, rare earth long afterglow luminescent powder, silicate long afterglow luminescent powder, Aluminate silicate long afterglow luminescent materials
Product series: sky-blue long afterglow phosphor RBT,
Luminous color: sky-blue,
Chemical formula: sky-lue: Sr2MgSi2O7: Eu 2 +, Dy3+
Emission wavelength (peak): 470nm
Excitation wavelength range (nm): 200~450
Powder color: Light white
Luminous color: Sky-blue
Central particle size range: 1 ~ 100micoron
Chemical stability: excellent, slow decomposition in water (waterproof treatment)
Temperature resistance:
between 250-600℃, the luminous performance decreases with the increase of temperature and time
Applicable temperature: no change in luminous performance below 250 ℃
Specific gravity: 3.6 g / cm3
The afterglow brightness range and afterglow time are shown in the following figure:
Luminescent specifications of RBT-20’
|
Product series |
Specs
code |
Luminance（mcd/m2） |
Afterglow time Min |
Particle size (in um D50) |
Maximum particle diameter |
||
|
1 Min |
10 Min |
60 Min |
Dmax (um)< |
||||
|
RBT-20’ |
RBT-201 |
800 |
100 |
20 |
18520 |
75~85 |
120 |
|
RBT-202 |
700 |
80 |
10 |
12000 |
35~45 |
80 |
|
|
RBT-203 |
550 |
60 |
5 |
8000 |
10~20 |
40 |
|
NOTE
The above technical data was obtained through test in accordance with DIN67510 Part I method;
The after-glow time refers the time it takes for the luminance to reduce to 0.32mcd/m2 from the time
For accurate assessment of the color of luminescence, please refer to samples.
