Green-emitting, garnet-based phosphors in general and backlighting applications

A white LED comprising:

• a radiation source configured to provide excitation radiation having a wavelength greater than about 280 nm;
• at least one green-emitting, garnet-based phosphor, at least one said green emitting, garnet-based phosphor being a cerium-activated, green-emitting lutetium aluminate phosphor consisting of lutetium, cerium, at least one alkaline earth metal, aluminum, oxygen, and at least one halogen, wherein said at least one phosphor is configured to absorb excitation radiation having a wavelength ranging from about 420 nm to about 480 nm, and to emit light having a peak emission wavelength ranging from about 500 nm to about 550 nm.

A white LED comprising:

• a radiation source configured to provide excitation radiation having a wavelength greater than about 280 nm;
• at least one green-emitting, garnet-based phosphor, at least one said green emitting, garnet-based phosphor being a cerium-activated, green-emitting lutetium aluminate phosphor comprising lutetium, cerium, aluminum, oxygen, fluorine, and strontium, wherein said at least one phosphor is configured to absorb excitation radiation having a wavelength ranging from about 380 nm to about 480 nm, and to emit light having a peak emission wavelength ranging from about 523.44 nm to about 534.64 nm, and wherein said at least one phosphor is characterized by CIE(x) coordinates ranging from 0.3405 to 0.3677 and CIE(y) coordinates ranging from 0.5718 to 0.5748.

A white LED comprising:

• a radiation source configured to provide excitation radiation having a wavelength greater than about 280 nm;
• at least one green-emitting, garnet-based phosphor, at least one said green emitting, garnet-based phosphor being a cerium-activated, green-emitting lutetium aluminate phosphor comprising lutetium, cerium, aluminum, oxygen, fluorine, and magnesium, wherein said at least one phosphor is configured to absorb excitation radiation having a wavelength ranging from about 380 nm to about 480 nm, and to emit light having a peak emission wavelength ranging from about 514.22 nm to about 529.56 nm, and wherein said at least one phosphor is characterized by CIE(x) coordinates ranging from 0.3336 to 0.3635 and CIE(y) coordinates ranging from 0.5776 to 0.5862.