Intematix Corporation

Intermatix Corporation

Yusong Wu

Yi-Qun Li

Dejie Tao

Shifan Cheng

Dejie T Tao

Disclosed herein are green-emitting, garnet-based phosphors having the formula (LuYTbA)(AlB)(OC):Ce,Eu, where A is selected from the group consisting of Mg, Sr, Ca, and Ba; B is selected from the group consisting of Ga and In; C is selected from the group consisting of F, Cl, and Br; and 0&#x2264;a&#x2264;1; 0&#x2264;b&#x2264;1; 0&#x3c;c&#x2264;0.5; 0&#x2264;d&#x2264;1; and 0&#x3c;e&#x2264;0.2. These phosphors are distinguished from anything in the art by nature of their inclusion of both an alkaline earth and a halogen. Their peak emission wavelength may lie between about 500 nm and 540 nm; in one embodiment, the phosphor (Lu,Y,A)Al(O,F,Cl):Euhas an emission at 540 nm. The FWHM of the emission peak lies between 80 nm and 150 nm. The present green garnet phosphors may be combined with a red-emitting, nitride-based phosphor such as CaAlSiNto produce white light.

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

Disclosed herein are green-emitting, garnet-based phosphors having the formula (LuYTbA)(AlB)(OC): Ce,Eu, where A is selected from the group consisting of Mg, Sr, Ca, and Ba; B is selected from the group consisting of Ga and In; C is selected from the group consisting of F, Cl, and Br; and 0&#x2266;a&#x2266;1; 0&#x2266;b&#x2266;1; 0&#x3c;c&#x2266;0.5; 0&#x2266;d&#x2266;1; and 0&#x3c;e&#x2266;0.2. These phosphors are distinguished from anything in the art by nature of their inclusion of both an alkaline earth and a halogen. Their peak emission wavelength may lie between about 500 nm and 540 nm; in one embodiment, the phosphor (Lu,Y,A)Al(O,F,Cl): Euhas an emission at 540 nm. The FWHM of the emission peak lies between 80 nm and 150 nm. The present green garnet phosphors may be combined with a red-emitting, nitride-based phosphor such as CaAlSiNto produce white light.

Disclosed herein are green-emitting, garnet-based phosphors having the formula (LuYTbA)(AlB)(OC):Ce,Eu, where A is selected from the group consisting of Mg, Sr, Ca, and Ba; B is selected from the group consisting of Ga and In; C is selected from the group consisting of F, Cl, and Br; and 0&#x2266;a&#x2266;1; 0&#x2266;b&#x2266;1; 0&#x3c;c&#x2266;0.5; 0&#x2266;d&#x2266;1; and 0&#x3c;e&#x2266;0.2. These phosphors are distinguished from anything in the art by nature of their inclusion of both an alkaline earth and a halogen. Their peak emission wavelength may lie between about 500 nm and 540 nm; in one embodiment, the phosphor (Lu,Y,A)Al(O,F,Cl):Euhas an emission at 540 nm. The FWHM of the emission peak lies between 80 nm and 150 nm. The present green garnet phosphors may be combined with a red-emitting, nitride-based phosphor such as CaAlSiNto produce white light.

Growing community of inventors

Shiyan, China

Yusong Wu