Patent number: 8361346
Abstract: The invention provides a phosphor composed of (M1?xREx)5SiO4?yX6+2y, wherein M is Ba individually or in combination with at least one of Mg, Ca, Sr, or Zn; RE is Y, La, Pr, Nd, Eu, Gd, Tb, Ce, Dy, Yb, Er, Sc, Mn, Zn, Cu, Ni, or Lu; X is F, Cl, Br, or combinations thereof; 0.001?x?0.6, and 0.001?y?1.5. Under excitation, the phosphor of the invention emits visible light and may be collocated with other phosphors to provide a white light illumination device.
Type:
Grant
Filed:
December 28, 2009
Date of Patent:
January 29, 2013
Assignee:
Industrial Technology Research Institute
Inventors:
Wei-Jen Liu, Yi-Chen Chiu, Yao-Tsung Yeh, Shyue-Ming Jang, Teng-Ming Chen, Jen-Chuen Liao, Li-Ching Chuo, Fang-Yi Su
Patent number: 8012372
Abstract: The invention provides borate phosphors composed of Ma(Mb)1-xBO3:(Mc)x, wherein Ma is Li, Na, K, Rb, Cs, or combinations thereof, Mb is Mg, Ca, Sr, Ba, Zn or combinations thereof, Mc is Y, La, Pr, Nd, Eu, Gd, Tb, Ce, Dy, Yb, Er, Sc, Mn, Zn, Cu, Ni, Lu, or combinations thereof, and 0?x?0.3. The borate phosphors emit visible light under the excitation of ultraviolet light or blue light, and may be further collocated with different colored phosphors to provide a white light illumination device.
Type:
Grant
Filed:
May 18, 2008
Date of Patent:
September 6, 2011
Assignee:
Industrial Technology Research Institute
Inventors:
Wei-Jen Liu, Yao-Tsung Yeh, Shyue-Ming Jang, Chien-Yueh Tung, Chih-Pin Wu, Teng-Ming Chen
Patent number: 7931826
Abstract: The invention provides a white light illumination device including an ultraviolet excitation light source and an ultraviolet excitable aluminosilicate phosphor. The ultraviolet excitable aluminosilicate phosphor has a formula as (M1-x,Rex)aAlbSicOd:D, wherein M is Mg, Ca, Sr, Ba or combination thereof. In addition, Re is Y, La, Pr, Nd, Eu, Gd, Tb, Ce, Dy, Yb, Er, Sc, Mn, Zn, Cu, Ni, Lu or combination thereof, while 0<a, b, c, d, 2a+3b+4c=2d, and 0?x?a. Furthermore, D is F, Cl, I, Br, OH, S or combinations thereof. The aluminosilicate phosphor emits blue or blue-green light under the excitation of ultraviolet light, and the aluminosilicate phosphor may further collocate with different color phosphors to provide a white light illumination device.
Type:
Grant
Filed:
December 17, 2007
Date of Patent:
April 26, 2011
Assignee:
Industrial Technology Research Institute
Inventors:
Teng-Ming Chen, Woan-Jen Yang, Yao-Tsung Yeh, Chien-Yueh Tung, Tien-Heng Huang, Fang-Ching Chang, Yung Chi Chen, Wei-Jen Liu