Fay, Sharpe, Fagan, Minnich & McKee LLP
Green emitting phosphor for use in UV light emitting diodes
A green-emitting phosphor is provided, which has the general formula LnxBO3: Ce3+y, Tb3+z, where Ln includes one or more lanthanide-type elements, such as Sc, Y, La, Gd, and Lu. x+y+z=1; 0&lE;x&lE;0.98; 0&lE;y&lE;0.5; and 0&lE;z&lE;0.5. The phosphor efficiently converts light in the UV/blue region of the spectrum (250-400 nm) to light of longer wavelength, with a peak emission intensity of about 545 nm. The phosphor is used alone, or in a phosphor blend for converting UV/blue light from a GaN-base light emitting diode to green or white light, respectively.
General Electric Company
Y F F H C C C C C C C C F F F
Y02B F21K F21Y H01L C09K C09K C09K C09K C09K C09K C09K C09K F21V F21Y F21V
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Holly A. Alok M. William W.
Comanzo Srivastava Beers