A phosphor of the present invention has {HEAD ~ low emission} of {TAIL ~ UV radiation} having wavelengths longer than about 250 nm, thus efficiently uses exciting UV having shorter wavelengths 
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A phosphor of the present invention has { HEAD ~ low emission } of { TAIL ~ UV radiation } having wavelengths longer than about 250 nm , thus efficiently uses exciting UV having shorter wavelengths
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH