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  • Phosphorescent Microspheres – Long Afterglow Particles

    Phosphorecent Beads - Yellow Green Afterglow Spheres

    Phosphorecent Beads - Yellow Green Afterglow

    Phosphorescent microspheres in particle sizes 10 to 600 microns are now available from Cospheric LLC. These phosphorescent particles are 90% spherical and appear to be off-white under ordinary daylight or regular room illumination.  However, when the lights are turned off these phosphorescent particles exhibit phosphorescent yellow-green after-glow.

    The spheres have tight particle size distributions and are > 90% within size range.  Polymer spheres that incorporate proprietary phosphorescent ingredient have a melting point of 115°C , and are mechanically stable past 90°C.  Phosphorescent beads are also inert in most solvents.

    Phosphorescent Decay CurveIntensity of Phosphorescent Afterglow:

    Intensity according to DIN 67510-1

    800 mcd/m2 at 1 minute
    180 mcd/m2 at 5 minutes
    90 mcd/m2 at 10 minutes
    12 mcd/m2 at 1 hour
    5 mcd/m2 at 2 hours

    Excitation and Phosphorescent Emission Curve:
    Excitation and Emission Spectra