Titanium activated hafnia and/or zirconia host phosphor containi

Details Titanium activated hafnia and/or zirconia host phosphor containi Titanium activated hafnia and/or zirconia host phosphor containi

1990-06-29

1991-02-26

Cooper, Jack

Compositions

Inorganic luminescent compositions

Group iv element containing

C09K 1167

Patent

active

049960032

ABSTRACT:
An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing ions of one or more rare earths selected from among those having an atomic number of 39, 62 to 64 inclusive, and 67 to 71 inclusive. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.

REFERENCES:
patent: 2314699 (1943-03-01), Hale
patent: 2402760 (1946-06-01), Leverenz
patent: 2542336 (1951-02-01), Kroger
patent: 3640887 (1972-02-01), Anderson
patent: 3905912 (1975-09-01), Mathers
patent: 3974389 (1976-08-01), Ferri et al.
patent: 4006097 (1977-02-01), Kelsey, Jr.
patent: 4014812 (1977-03-01), Kelsey et al.
patent: 4054798 (1977-10-01), Watanabe et al.
patent: 4068128 (1978-01-01), Chenot et al.
patent: 4070583 (1978-01-01), Rabatim
patent: 4112194 (1978-09-01), Chenot et al.
patent: 4153469 (1979-05-01), Alexandrov et al.
patent: 4295989 (1981-10-01), Klein et al.
McCauley et al. "J. of Lumin." 6, (1973), pp. 105-115.
E. Iwase and S. Nishiyama, "Luminescence Spectra of Trivalent Rare Earth Ions", Proc. Intern. Sym. Mol. Struct. Spectry., Tokyo, 1962, A-407-1 to 7.
L. H. Brixner, "Structural and Luminescent Properties of the Ln.sub.2 Hf.sub.2 O.sub.7 -Type Rare Earth Hafnates", Mat. Res. Bull., vol. 19, pp. 143-149, 1984.
J. F. Sarver, "Preparation and Luminescent Properties of Ti-Activated Zirconia", Journal of the Electrochemical Society, vol. 113, No. 2, Feb. 1966, pp. 124-128.

Affiliated with

Also associated with

Rating

Titanium activated hafnia and/or zirconia host phosphor containi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Titanium activated hafnia and/or zirconia host phosphor containi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Titanium activated hafnia and/or zirconia host phosphor containi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-292875