Intematix Corporation

Jingtao Gu

Yi-Qun Li

Shifan Cheng

Zhankun Jia

Chengjun Duan

Yellow-green to yellow-emitting, lutetium aluminate-based terbium (Tb) containing phosphors for use in white LEDs, general lighting, and LED and backlighting displays are disclosed herein. The phosphor may further contain gadolinium (Gd). In one embodiment of the present invention, the phosphor comprises a cerium-activated, yellow-green to yellow-emitting lutetium aluminate-based phosphor having the formula (LuA)AlO:Ce wherein A is at least one of Gd and Tb and 0.1&#x2266;x&#x2266;1.0, wherein the phosphor is configured to emit light having a peak emission wavelength ranging from about 550 nm to about 565 nm, and wherein the phosphor contains at least some Tb.

Yellow-green to yellow-emitting phosphors based on terbium-containing aluminates

Disclosed herein are yellow-green and yellow-emitting aluminate based phosphors for use in white LEDs, general lighting, and LED and backlighting displays. In one embodiment of the present invention, the cerium-activated, yellow-green to yellow-emitting aluminate phosphor comprises the rare earth lutetium, at least one alkaline earth metal, aluminum, oxygen, at least one halogen, and at least one rare earth element other than lutetium, wherein the 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 550 nm to about 600 nm.

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Shanghai, China

Jingtao Gu