LIGHT EMITTING DEVICES HAVING RARE EARTH AND TRANSITION METAL ACTIVATED PHOSPHORS AND APPLICATIONS T

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Light emitting devices and applications thereof. The light emitting devices include a light emitting device having an active layer of a semi-conductor and a phosphor having the general formula Ca1+xSr1−xGayIn2−ySzSe3−zF2, wherein 0≦x≦1, 0≦y≦2 and 0≦z≦3. The phosphors are activated with an activator which may include dopants such as europium (Eu), cerium (Ce), praseodymium (Pr), terbium (Tb), ruthenium (Ru), erbium (Er), manganese (Mn) and mixtures thereof.