Title:
FLUOROPHOR AND METHOD FOR PRODUCTION THEREOF AND ILLUMINATOR
Document Type and Number:
WIPO Patent Application WO/2007/004493
Kind Code:
A1
Abstract:
A fluorophor which comprises, as a main component, an α type sialon crystal
containing at least Li, A element (wherein A represents one or more elements selected
from among Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Er, Tm and Yb), M element (wherein M represents
one or more metal elements except Li and the A element), Si, Al, oxygen and nitrogen.
The fluorophor has an α type sialon crystal structure which is represented
by the general formulae: (Lix1, Ax2, Mx3)(Si12-(m+n)Alm+n)(OnN16-n)
1.2 ≤ x1 ≤ 2.4 (1) 0.001 ≤ x2 ≤ 0.4 (2) and 0 ≤
x3 ≤ 1.0 (3), and has a luminescence peak at a wavelength in the range of
400 to 700 nm. The above phosphor is reduced in the lowering of brightness, and
can be suitably used for a white LED and the like.
Inventors:
HIROSAKI, Naoto (2-1 Sengen 1-chome Tsukuba-sh, Ibaraki 47, 3050047, JP)
広崎 尚登 (〒47 茨城県つくば市千現１丁目２－１独立行政法人 物質・材料研究機構内 Ibaraki, 3050047, JP)
XIE, Rong-Jun (2-1 Sengen 1-chome Tsukuba-sh, Ibaraki 47, 3050047, JP)
広崎 尚登 (〒47 茨城県つくば市千現１丁目２－１独立行政法人 物質・材料研究機構内 Ibaraki, 3050047, JP)
XIE, Rong-Jun (2-1 Sengen 1-chome Tsukuba-sh, Ibaraki 47, 3050047, JP)
Application Number:
JP2006/312923
Publication Date:
January 11, 2007
Filing Date:
June 28, 2006
Export Citation:
Assignee:
National Institute for Materials Science (2-1 Sengen 1-chome, Tsukuba-shi Ibaraki, 47, 3050047, JP)
独立行政法人 物質・材料研究機構 (〒47 茨城県つくば市千現１丁目２－１ Ibaraki, 3050047, JP)
HIROSAKI, Naoto (2-1 Sengen 1-chome Tsukuba-sh, Ibaraki 47, 3050047, JP)
広崎 尚登 (〒47 茨城県つくば市千現１丁目２－１独立行政法人 物質・材料研究機構内 Ibaraki, 3050047, JP)
独立行政法人 物質・材料研究機構 (〒47 茨城県つくば市千現１丁目２－１ Ibaraki, 3050047, JP)
HIROSAKI, Naoto (2-1 Sengen 1-chome Tsukuba-sh, Ibaraki 47, 3050047, JP)
広崎 尚登 (〒47 茨城県つくば市千現１丁目２－１独立行政法人 物質・材料研究機構内 Ibaraki, 3050047, JP)
International Classes:
C09K11/64; C09K11/08; C09K11/80; H01J1/63; H01L51/50; H05B33/12; H05B33/14; H01L33/50
Attorney, Agent or Firm:
AIKAWA, Toshihiko (Nakano Bldg. No.3, 12-5 Minami Ikebukuro, 2-chom, Toshima-ku Tokyo 22, 1710022, JP)