| 摘要 |
Provided is a red phosphor represented by formula 1: <?in-line-formulae description="In-line Formulae" end="lead"?>(Li<SUB>(2-z)-x</SUB>M<SUB>x</SUB>)(MoO<SUB>4</SUB>)<SUB>y</SUB>:Eu<SUB>z</SUB>,Sm<SUB>q</SUB> ( 1 ) <?in-line-formulae description="In-line Formulae" end="tail"?> where M is an element selected from K, Mg, Na, Ca, Sr, and Ba, 0<=x<=2, 0.5<=y<=5, 0.01<=z<=1.5, and 0.001<=q<=1.0. The red phosphor has emission characteristics such as high brightness when excited by, in particular, an excitation light source of around 405 nm. The red phosphor is 6 times brighter than conventional phosphors. Furthermore, the red phosphor can be used in a red light emitting diode (LED) that has a UV excitation light source, a white LED, and an active dynamic liquid crystal device (LCD). In addition, the white LED using the red phosphor has a color rendering index of 90 or greater and so has excellent color rendition.
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