Title:
FLUORESCENT SUBSTANCE, PROCESS FOR PRODUCING SAME, AND LUMINESCENT DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2010/098141
Kind Code:
A1
Abstract:
A fluorescent substance which has excellent temperature characteristics and can be excited by light in the region from near ultraviolet to short-wavelength visible light to emit light of a yellow to red color; a process for producing the fluorescent substance; and a luminescent device using the fluorescent substance. The fluorescent substance contains M, which is one or more Group-2 elements selected from Ca, Sr, and Ba, further contains aluminum, silicon, oxygen, and nitrogen, and has been activated with europium. The fluorescent substance, when examined with a CuKα line, has an X-ray diffraction pattern in which when the intensity of the diffraction peak appearing at a Bragg angle in the range of 17.9º to 18.5º is taken as 100%, the pattern has a diffraction peak having a relative intensity of 150% to 310% in a Bragg angle range of 24.5º to 25.1º and has a diffraction peak having a relative intensity of 320% to 550% in a Bragg angle range of 34.8º to 35.4º.
Inventors:
SHINOHARA TAKAYUKI (JP)
HOSOKAWA SHOJI (JP)
HOSOKAWA SHOJI (JP)
Application Number:
PCT/JP2010/001349
Publication Date:
September 02, 2010
Filing Date:
February 26, 2010
Export Citation:
Assignee:
NICHIA CORP (JP)
SHINOHARA TAKAYUKI (JP)
HOSOKAWA SHOJI (JP)
SHINOHARA TAKAYUKI (JP)
HOSOKAWA SHOJI (JP)
International Classes:
C09K11/64; H01L33/50
Foreign References:
| JP2006070109A | 2006-03-16 | |||
| JP2006063323A | 2006-03-09 | |||
| JP2005302920A | 2005-10-27 | |||
| JP2006057018A | 2006-03-02 | |||
| JP2007291352A | 2007-11-08 |
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