Two invention patentswere granted
Published:
2014-12-22
Recently, two invention patentswere granted, named “Blue-green long-afterglow fluorescent powder with superfine particle diameter and high luminous efficiency and preparation method of powder” and “Nitride fluorescent powder and preparation method thereof”, numbered ZL201210422197.9 and ZL201210227797.X, respectively.
The invention named “Blue-green long-afterglow fluorescent powder with superfine particle diameter and high luminous efficiency and preparation method of powder” solved the contradiction among the afterglow brightness, afterglow time and the powder particle diameter of the long-afterglow fluorescent powder, when the fluorescent powder is motivated for 10 minutes by an excitation light source, the initial afterglow brightness can reach 3000mCd/m, and the afterglow time exceeds for 20 hours; and the fluorescent powder can meet special application in the fields of fibers, textiles and so on.
The fluorescent powder provided by the invention named “Nitride fluorescent powder and preparation method thereof”has the characteristics of wide excitation wavelength range, high efficiency, high stability and so on; and the luminescent device made of the fluorescent powder has the characteristics of long service life and high luminescence efficiency.
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