Title:
固体照明用途のセリウム系蛍光体材料
Document Type and Number:
Japanese Patent JP2009512741
Kind Code:
A
Abstract:
Three new cerium (Ce) based phosphor materials based on nitride and oxynitride compounds emit yellow or blue to green photons upon excitation by ultraviolet (UV) or blue light radiation. The two yellow emitting compounds belong to the quartenary Ca-Al-Si-N system with distinct structures. These bright yellow phosphors can be used for white light applications by combining either a blue light emitting diode (LED) and a yellow phosphor, a blue LED and green-orange phosphors, or an ultraviolet (UV) LED with three phosphors, i.e., red, blue and green (RGB) phosphors. The bright blue-green phosphor, which may be described by Sr 2 SiO 4-´ N ´ , can be used in the UV LED plus 3 RGB phosphors setup.
Inventors:
Cheetham, Anthony K.
Le Tukwan, Ronan Pai.
Le Tukwan, Ronan Pai.
Application Number:
JP2008533772A
Publication Date:
March 26, 2009
Filing Date:
October 02, 2006
Export Citation:
Assignee:
The Regents of The University of California
International Classes:
C09K11/59; C09K11/08; C09K11/62; C09K11/64; C09K11/66; H01L33/50
Domestic Patent References:
| JPH10242513A | 1998-09-11 | |||
| JP2005228833A | 2005-08-25 | |||
| JP2002226846A | 2002-08-14 |
Foreign References:
| WO1998005078A1 | 1998-02-05 | |||
| WO2005061659A1 | 2005-07-07 | |||
| WO2005083037A1 | 2005-09-09 | |||
| WO2005049763A1 | 2005-06-02 |
Other References:
JPN6012043014; ＣＨＥＭＩＣＡＬ ＰＨＹＳＩＣＳ ＬＥＴＴＥＲＳ， ＶｏＬ．４２３，ＩＳＳＵＥＳ ４-６，, Ｐ．３５２-３５６
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita